4. GStreamer : Pipeline to connect VNC server and Display/Record the remote GUI

Qt World Summit: Submit your Presentation


GStreamer : Pipeline to connect VNC server and Display/Record the remote GUI


  • Hi,
    I want to use GStreamer to connect to a VNC server and record the video.
    for now all i did is : I likned my app against GStreamer

    Please someone explain or provide an introduction (simple) tutorial to help me to understand the concept of pipeline.
    i need to use gst-launch-1.0 tool to create the pipeline and GstParse to generate and execute the pipeline in my code.

    Thank you in advance

    0
  • Lifetime Qt Champion

    Copies from this thread:

    A GStreamer pipeline is basically a list of module that you chain to each other from the source to the sink to, for example, read an audio file, decode it and finally send it to your audio output.

    From a command line point of view, it's the elements built from the parameters you give to gst-launch.

    For example:
    Play the mp3 music file "music.mp3" using a libmad-based plugin and output to an OSS device:

    gst-launch-1.0 filesrc location=music.mp3 ! mad ! audioconvert ! audioresample ! osssink

    The documentation of get-launch gives you more good examples.
    The API tutorials are pretty nice to get started.

    2 1 Reply

  • @SGaist said in GStreamer : understanding the concept of 'pipeline':

    Copies from this thread:

    Yes, thx, i did a new one because the other thread is turning to spaghetti.
    Thx for explanation, it is bit clearer
    I will dive into these docs today.

    0

  • Hi,
    I'm testing the GStreamer Hello World exemple, a call to GstMessage * gst_bus_timed_pop_filtered() is underlined in red, and application cant compile
    Qt creator autocompletion can find it, but when i call it

    msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS)

    output : no matching function for call to 'gst_bus_timed_pop_filtered'

    What could be the problem please ?

    0 1 Reply
  • Lifetime Qt Champion

    @LeLev Header file not included?
    Wrong parameters passed?

    1 1 Reply

  • @jsulm hi
    i only include <gst/gst.h>

    about parameters, i also tryed to compile the program without passing any parameters to gst_bus_timed_pop_filtered
    and had this output :
    too few arguments to function 'GstMessage* gst_bus_timed_pop_filtered(GstBus*, GstClockTime, GstMessageType)'
    msg = gst_bus_timed_pop_filtered();
    ^

    0 1 Reply
  • Lifetime Qt Champion

    @LeLev said in GStreamer : understanding the concept of 'pipeline':

    without passing any parameters

    this will for sure not work as the function expects 3 parameters: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstBus.html#gst-bus-timed-pop-filtered

    Can you post the whole error message with the parameters you were passing before?
    Maybe the type of "bus" was wrong?

    0

  • @jsulm

         gst_init (&argc, &argv);
     GstElement *pipeline;
     GstBus *bus;
     GstMessage *msg;

     pipeline = gst_parse_launch ("playbin uri=https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm", NULL);

       gst_element_set_state (pipeline, GST_STATE_PLAYING);
       
       bus = gst_element_get_bus (pipeline);
       msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);

    output :

    no matching function for call to 'gst_bus_timed_pop_filtered'

erreur : invalid conversion from 'int' to 'GstMessageType' [-fpermissive]
        msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
                                                                   ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
    0 1 Reply
  • Lifetime Qt Champion

    @LeLev said in GStreamer : understanding the concept of 'pipeline':

    GST_MESSAGE_ERROR | GST_MESSAGE_EOS

    this is the actual problem. Try to cast it to GstMessageType:

    msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, static_cast<GstMessageType>(GST_MESSAGE_ERROR | GST_MESSAGE_EOS));
    1 1 Reply

  • i just changed the 3rd parameter and it compiled

    msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_EOS);
    0 1 Reply

  • @jsulm said in GStreamer : understanding the concept of 'pipeline':

    ry to cast it to GstMessageType:

    Thank you !

    0
  • Lifetime Qt Champion

    @LeLev That's why it is important to post all errors: many errors are just follow up errors caused by another error.

    1 1 Reply

  • @jsulm said in GStreamer : understanding the concept of 'pipeline':

    all errors

    saved for the next time.

    I'm confused about this lib.
    In this hello world exemple they say :

    If everything built fine, fire up the executable! You should see a window pop up, containing a video being played straight from the Internet, along with audio. Congratulations!

    I can't figure out how a window will pop up.
    I'm reading the playbin description right now, in my app nothing pops up.

    0 1 Reply
  • Lifetime Qt Champion

    @LeLev said in GStreamer : understanding the concept of 'pipeline':

    I can't figure out how a window will pop up.

    So, you start the app but no window pops up?
    Then probably something is wrong. I don't know what. You can debug and see what happens.

    0 1 Reply

  • @jsulm said in GStreamer : understanding the concept of 'pipeline':

    So, you start the app but no window pops up?

    Yes,

    @jsulm said in GStreamer : understanding the concept of 'pipeline':

    probably something is wrong

    yes, with putenv("GST_DEBUG=2"); i got :

    0:00:03.253981299  1536 0000000037E010C0 WARN             souphttpsrc gstsouphttpsrc.c:1379:gst_soup_http_src_parse_status:<source> error: Secure connection setup failed.
0:00:03.254006642  1536 0000000037E010C0 WARN             souphttpsrc gstsouphttpsrc.c:1379:gst_soup_http_src_parse_status:<source> error: TLS/SSL support not available; install glib-networking (6), URL: https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm, Redirect to: (NULL)
0:00:03.254067912  1536 0000000037E010C0 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<source> error: Internal data stream error.
0:00:03.254105765  1536 0000000037E010C0 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<source> error: streaming stopped, reason error (-5)
0:00:03.254180509  1536 0000000037E010C0 WARN                typefind gsttypefindelement.c:991:gst_type_find_element_chain_do_typefinding:<typefindelement0> error: Stream doesn't contain enough data.
0:00:03.254192057  1536 0000000037E010C0 WARN                typefind gsttypefindelement.c:991:gst_type_find_element_chain_do_typefinding:<typefindelement0> error: Can't typefind stream

    i will install glib-networking

    0 1 Reply
  • Lifetime Qt Champion

    @LeLev You could try to play a video from a non-SSL (non-HTTPS) URL.

    1 1 Reply

  • @jsulm That worked thank you!

    0 1 Reply

  • Can please someone help me to complete this pipeline so it can record the VNC remote desktop to video file and/or show it with
    playbin ?
    pipeline = gst_parse_launch("rfbsrc host=xx.xx.xx.xx port=5900 password=passw view-only=true",NULL);

    0
  • Lifetime Qt Champion

    Use the tee plugin.

    1 1 Reply

  • @SGaist thank you, I tryed to use tee, but that is more complicated to do, i actually don't want to Watch and Save/record.
    I would like to only save the video without displaying it.

    after some houres i got this broken pipeline..

    I have lot of troubles on how to set up the format for the video and write it to a file
    I use ultraVnc server

    "rfbsrc host=xx.xx.xx.xx port=5900 password=pw view-only=true   TODO : set up video format    ! mpegtsmux ! filesink location=testvideo.mp4"

    i have this output

    ** (QVNCClient.exe:10252): CRITICAL **: gst_video_info_set_format: assertion 'format != GST_VIDEO_FORMAT_UNKNOWN' failed

** (QVNCClient.exe:10252): CRITICAL **: gst_video_info_to_caps: assertion 'info->finfo->format != GST_VIDEO_FORMAT_UNKNOWN' failed

(QVNCClient.exe:10252): GStreamer-CRITICAL **: gst_event_new_caps: assertion 'caps != NULL' failed

(QVNCClient.exe:10252): GStreamer-CRITICAL **: gst_pad_push_event: assertion 'GST_IS_EVENT (event)' failed

(QVNCClient.exe:10252): GStreamer-CRITICAL **: gst_mini_object_unref: assertion 'mini_object != NULL' failed
0:00:00.737522311 10252 0000000036FDDBC0 WARN                 basesrc gstbasesrc.c:3275:gst_base_src_prepare_allocation:<rfbsrc0> Subclass failed to decide allocation
0:00:00.737604753 10252 0000000036FDDBC0 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<rfbsrc0> error: Internal data stream error.
0:00:00.737644531 10252 0000000036FDDBC0 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<rfbsrc0> error: streaming stopped, reason not-negotiated (-4)
This program is linked against GStreamer 1.14.3

    THX

    0
  • Lifetime Qt Champion

    You have here an example of pipeline with h264 recording.

    1 1 Reply

  • @SGaist hi,
    I am still struggling with Gstreamer.

    Could you please try to see where the probleme is ?
    i try this pipeline :

    gst-launch-1.0 -v rfbsrc host=xx.xx.x.xx port=5900 password=passw view-only=true !
tee name = t ! queue ! omxh264enc ! 
'video/x-h264, stream-format=(string)byte-stream' ! h264parse ! qtmux ! 
filesink location=test.mp4 t. ! queue ! videoscale ! video/x-raw, 
width=480,height=270 ! xvimagesink -e sync=false

    OUTPUT :
    *(gst-launch-1.0:8672): GStreamer-CRITICAL *: gst_element_make_from_uri: assertion 'gst_uri_is_valid (uri)' failed
    WARNING: erroneous pipeline: no element "omxh264enc"

    I downloaded and installed x264 from here but i still get same error

    Maybe there is a simple way to just connect to VNC srv and only record without displaying.
    Or a simple tool that i can start with QProcess

    0

  • i tryed like this also :

    gst-launch-1.0 rfbsrc host=xx.x.x.xx port=xxxx password=xxxx view-only=true ! videoconvert ! x264enc ! flvmux ! filesink location=xyz.flv

    OUTPUT : WARNING : erroneous pipeline : no element "x264enc"

    I found "x264enc" is part of gst-plugins-ugly but cant fugure out how to install tath missing plugin. I downloaded it from here

    I also found a tool : vnc2flv
    i need to build it with python but when i try i get :

    error print version
    Missing parentheses in call to 'print'. Did you mean print(version)

    0 1 Reply
  • Lifetime Qt Champion

    @LeLev said in GStreamer : understanding the concept of 'pipeline':

    gst-plugins-ugly but cant fugure out how to install tath missing plugin

    apt install gstreamer1.0-plugins-ugly
    1 1 Reply

  • @jsulm hi ,
    I did not mension I'm using windows.

    0
  • Lifetime Qt Champion

    @LeLev said in GStreamer : understanding the concept of 'pipeline':

    error print version
    Missing parentheses in call to 'print'. Did you mean print(version)

    Because the code is written for Python 2 and you are using Python 3

    What set of plugins did you get when installing on Windows ?

    1 1 Reply

  • hi @SGaist thank you,
    please see my output for gst-inspect-1.0

    C:\Users\lev>gst-inspect-1.0
gio:  giosink: GIO sink
gio:  giosrc: GIO source
gio:  giostreamsink: GIO stream sink
gio:  giostreamsrc: GIO stream source
taglib:  id3v2mux: TagLib-based ID3v2 Muxer
taglib:  apev2mux: TagLib-based APEv2 Muxer
soundtouch:  pitch: Pitch controller
soundtouch:  bpmdetect: BPM Detector
openh264:  openh264dec: OpenH264 video decoder
openh264:  openh264enc: OpenH264 video encoder
decklink:  decklinkaudiosink: Decklink Audio Sink
decklink:  decklinkvideosink: Decklink Video Sink
decklink:  decklinkaudiosrc: Decklink Audio Source
decklink:  decklinkvideosrc: Decklink Video Source
y4menc:  y4menc: YUV4MPEG video encoder
y4mdec:  y4mdec: YUV4MPEG demuxer/decoder
webrtc:  webrtcbin: WebRTC Bin
wavparse:  wavparse: WAV audio demuxer
wavpack:  wavpackenc: Wavpack audio encoder
wavpack:  wavpackdec: Wavpack audio decoder
wavenc:  wavenc: WAV audio muxer
wasapi:  wasapideviceprovider (GstDeviceProviderFactory)
wasapi:  wasapisrc: WasapiSrc
wasapi:  wasapisink: WasapiSrc
vpx:  vp9enc: On2 VP9 Encoder
vpx:  vp9dec: On2 VP9 Decoder
vpx:  vp8enc: On2 VP8 Encoder
vpx:  vp8dec: On2 VP8 Decoder
vorbis:  vorbistag: VorbisTag
vorbis:  vorbisparse: VorbisParse
vorbis:  vorbisdec: Vorbis audio decoder
vorbis:  vorbisenc: Vorbis audio encoder
volume:  volume: Volume
videotestsrc:  videotestsrc: Video test source
videoscale:  videoscale: Video scaler
videorate:  videorate: Video rate adjuster
videoparsersbad:  vc1parse: VC1 parser
videoparsersbad:  h265parse: H.265 parser
videoparsersbad:  jpeg2000parse: JPEG 2000 parser
videoparsersbad:  pngparse: PNG parser
videoparsersbad:  mpeg4videoparse: MPEG 4 video elementary stream parser
videoparsersbad:  mpegvideoparse: MPEG video elementary stream parser
videoparsersbad:  diracparse: Dirac parser
videoparsersbad:  h264parse: H.264 parser
videoparsersbad:  h263parse: H.263 parser
videomixer:  videomixer: Video mixer 2
videofiltersbad:  videodiff: Video Diff
videofiltersbad:  zebrastripe: Zebra stripe overlay
videofiltersbad:  scenechange: Scene change detector
videofilter:  videomedian: Median effect
videofilter:  videoflip: Video flipper
videofilter:  videobalance: Video balance
videofilter:  gamma: Video gamma correction
videocrop:  aspectratiocrop: aspectratiocrop
videocrop:  videocrop: Crop
videoconvert:  videoconvert: Colorspace converter
videobox:  videobox: Video box filter
udp:  udpsrc: UDP packet receiver
udp:  dynudpsink: UDP packet sender
udp:  multiudpsink: UDP packet sender
udp:  udpsink: UDP packet sender
typefindfunctions: audio/audible: aa, aax
typefindfunctions: audio/x-xi: xi
typefindfunctions: video/x-pva: pva
typefindfunctions: application/x-ssa: ssa, ass
typefindfunctions: application/octet-stream: no extensions
typefindfunctions: image/x-degas: no extensions
typefindfunctions: image/x-icon: no extensions
typefindfunctions: application/x-yuv4mpeg: no extensions
typefindfunctions: image/vnd.wap.wbmp: no extensions
typefindfunctions: image/vnd.adobe.photoshop: psd
typefindfunctions: application/msword: doc
typefindfunctions: application/pdf: pdf
typefindfunctions: audio/x-kss: kss
typefindfunctions: video/x-ivf: ivf
typefindfunctions: audio/x-sap: sap
typefindfunctions: audio/x-vgm: vgm
typefindfunctions: audio/x-gbs: gbs
typefindfunctions: audio/x-ay: ay
typefindfunctions: audio/x-gym: gym
typefindfunctions: audio/x-nsf: nsf
typefindfunctions: video/vivo: viv
typefindfunctions: application/x-mmsh: no extensions
typefindfunctions: multipart/x-mixed-replace: no extensions
typefindfunctions: video/x-dirac: no extensions
typefindfunctions: application/x-ms-dos-executable: dll, exe, ocx, sys, scr, msstyles, cpl
typefindfunctions: application/x-ar: a
typefindfunctions: application/x-tar: tar
typefindfunctions: application/x-rar: rar
typefindfunctions: image/svg+xml: svg
typefindfunctions: application/postscript: ps
typefindfunctions: audio/x-caf: caf
typefindfunctions: audio/x-wavpack-correction: wvc
typefindfunctions: audio/x-wavpack: wv, wvp
typefindfunctions: audio/x-spc: spc
typefindfunctions: audio/aac: aac, adts, adif, loas
typefindfunctions: application/x-executable: no extensions
typefindfunctions: text/x-cmml: no extensions
typefindfunctions: application/x-ogg-skeleton: no extensions
typefindfunctions: audio/x-celt: no extensions
typefindfunctions: audio/x-speex: no extensions
typefindfunctions: application/x-ogm-text: no extensions
typefindfunctions: application/x-ogm-audio: no extensions
typefindfunctions: application/x-ogm-video: no extensions
typefindfunctions: video/x-theora: no extensions
typefindfunctions: audio/x-vorbis: no extensions
typefindfunctions: audio/x-flac: flac
typefindfunctions: application/x-subtitle-vtt: vtt
typefindfunctions: subtitle/x-kate: no extensions
typefindfunctions: application/x-compress: Z
typefindfunctions: application/zip: zip
typefindfunctions: application/x-gzip: gz
typefindfunctions: application/x-bzip: bz2
typefindfunctions: image/x-sun-raster: ras
typefindfunctions: image/x-xpixmap: xpm
typefindfunctions: image/x-jng: jng
typefindfunctions: video/x-mng: mng
typefindfunctions: image/x-xcf: xcf
typefindfunctions: audio/x-sid: sid
typefindfunctions: audio/x-sbc: sbc
typefindfunctions: audio/iLBC-sh: ilbc
typefindfunctions: audio/x-amr-wb-sh: amr
typefindfunctions: audio/x-amr-nb-sh: amr
typefindfunctions: video/x-dv: dv, dif
typefindfunctions: video/x-mve: mve
typefindfunctions: application/mxf: mxf
typefindfunctions: video/x-matroska: mkv, mka, mk3d, webm
typefindfunctions: image/x-portable-pixmap: pnm, ppm, pgm, pbm
typefindfunctions: image/x-exr: exr
typefindfunctions: image/webp: webp
typefindfunctions: image/tiff: tif, tiff
typefindfunctions: image/bmp: bmp
typefindfunctions: image/png: png
typefindfunctions: image/gif: gif
typefindfunctions: image/jpeg: jpg, jpe, jpeg
typefindfunctions: application/x-ape: ape
typefindfunctions: audio/x-shorten: shn
typefindfunctions: audio/x-rf64: rf64
typefindfunctions: audio/x-w64: w64
typefindfunctions: audio/x-ircam: sf
typefindfunctions: audio/x-sds: sds
typefindfunctions: audio/x-voc: voc
typefindfunctions: audio/x-nist: nist
typefindfunctions: audio/x-paris: paf
typefindfunctions: audio/x-svx: iff, svx
typefindfunctions: audio/x-aiff: aiff, aif, aifc
typefindfunctions: audio/x-wav: wav
typefindfunctions: application/xml: xml
typefindfunctions: application/ttml+xml: ttml+xml
typefindfunctions: application/smil: smil
typefindfunctions: application/sdp: sdp
typefindfunctions: application/x-hls: m3u8
typefindfunctions: application/itc: itc
typefindfunctions: text/uri-list: ram
typefindfunctions: text/utf-32: txt
typefindfunctions: text/utf-16: txt
typefindfunctions: text/plain: txt
typefindfunctions: video/x-flv: flv
typefindfunctions: application/vnd.ms-sstr+xml: no extensions
typefindfunctions: application/dash+xml: mpd, MPD
typefindfunctions: application/x-shockwave-flash: swf, swfl
typefindfunctions: application/x-pn-realaudio: ra, ram, rm, rmvb
typefindfunctions: application/vnd.rn-realmedia: ra, ram, rm, rmvb
typefindfunctions: text/html: htm, html
typefindfunctions: video/mj2: mj2
typefindfunctions: image/x-jpc: jpc, j2k
typefindfunctions: image/jp2: jp2
typefindfunctions: image/x-quicktime: qif, qtif, qti
typefindfunctions: video/quicktime: mov, mp4
typefindfunctions: application/x-3gp: 3gp
typefindfunctions: audio/x-m4a: m4a
typefindfunctions: video/x-nuv: nuv
typefindfunctions: video/x-h265: h265, x265, 265
typefindfunctions: video/x-h264: h264, x264, 264
typefindfunctions: video/x-h263: h263, 263
typefindfunctions: video/mpeg4: m4v
typefindfunctions: video/mpeg-elementary: mpv, mpeg, mpg
typefindfunctions: application/ogg: ogg, oga, ogv, ogm, ogx, spx, anx, axa, axv
typefindfunctions: video/mpegts: ts, mts
typefindfunctions: video/mpeg-sys: mpe, mpeg, mpg
typefindfunctions: audio/x-gsm: gsm
typefindfunctions: audio/x-dts: dts
typefindfunctions: audio/x-ac3: ac3, eac3
typefindfunctions: audio/mpeg: mp3, mp2, mp1, mpga
typefindfunctions: audio/x-mod: 669, amf, ams, dbm, digi, dmf, dsm, gdm, far, imf, it, j2b, mdl, med, mod, mt2, mtm, okt, psm, ptm, sam, s3m, stm, st
, ult, umx, xm
typefindfunctions: audio/x-ttafile: tta
typefindfunctions: application/x-apetag: mp3, ape, mpc, wv
typefindfunctions: application/x-id3v1: mp3, mp2, mp1, mpga, ogg, flac, tta
typefindfunctions: application/x-id3v2: mp3, mp2, mp1, mpga, ogg, flac, tta
typefindfunctions: video/x-fli: flc, fli
typefindfunctions: audio/mobile-xmf: mxmf
typefindfunctions: audio/riff-midi: mid, midi
typefindfunctions: audio/midi: mid, midi
typefindfunctions: audio/x-imelody: imy, ime, imelody
typefindfunctions: video/x-vcd: dat
typefindfunctions: video/x-cdxa: dat
typefindfunctions: audio/qcelp: qcp
typefindfunctions: video/x-msvideo: avi
typefindfunctions: audio/x-au: au, snd
typefindfunctions: audio/x-musepack: mpc, mpp, mp+
typefindfunctions: video/x-ms-asf: asf, wm, wma, wmv
theora:  theoraparse: Theora video parser
theora:  theoraenc: Theora video encoder
theora:  theoradec: Theora video decoder
tcp:  multisocketsink: Multi socket sink
tcp:  tcpserversrc: TCP server source
tcp:  tcpserversink: TCP server sink
tcp:  tcpclientsrc: TCP client source
tcp:  tcpclientsink: TCP client sink
tcp:  socketsrc: socket source
subparse:  ssaparse: SSA Subtitle Parser
subparse:  subparse: Subtitle parser
subparse: subparse_typefind: srt, sub, mpsub, mdvd, smi, txt, dks, vtt
srtp:  srtpdec: SRTP decoder
srtp:  srtpenc: SRTP encoder
speex:  speexdec: Speex audio decoder
speex:  speexenc: Speex audio encoder
speed:  speed: Speed
spectrum:  spectrum: Spectrum analyzer
spandsp:  tonegeneratesrc: Telephony Tone  Generator source
spandsp:  dtmfdetect: DTMF detector element
spandsp:  spanplc: SpanDSP PLC
soup:  souphttpclientsink: HTTP client sink
soup:  souphttpsrc: HTTP client source
smpte:  smptealpha: SMPTE transitions
smpte:  smpte: SMPTE transitions
smoothstreaming:  mssdemux: Smooth Streaming demuxer
smooth:  smooth: Smooth effect
siren:  sirenenc: Siren Encoder element
siren:  sirendec: Siren Decoder element
shapewipe:  shapewipe: Shape Wipe transition filter
segmentclip:  videosegmentclip: Video buffer segment clipper
segmentclip:  audiosegmentclip: Audio buffer segment clipper
sdpelem:  sdpsrc: SDP Source
sdpelem:  sdpdemux: SDP session setup
sbc:  sbcenc: Bluetooth SBC audio encoder
sbc:  sbcdec: Bluetooth SBC audio decoder
rtspclientsink:  rtspclientsink: RTSP RECORD client
rtsp:  rtpdec: RTP Decoder
rtsp:  rtspsrc: RTSP packet receiver
rtpmanager:  rtpdtmfmux: RTP muxer
rtpmanager:  rtpmux: RTP muxer
rtpmanager:  rtpssrcdemux: RTP SSRC Demux
rtpmanager:  rtprtxsend: RTP Retransmission Sender
rtpmanager:  rtprtxreceive: RTP Retransmission receiver
rtpmanager:  rtprtxqueue: RTP Retransmission Queue
rtpmanager:  rtpsession: RTP Session
rtpmanager:  rtpptdemux: RTP Demux
rtpmanager:  rtpjitterbuffer: RTP packet jitter-buffer
rtpmanager:  rtpbin: RTP Bin
rtp:  rtpstorage: RTP storage
rtp:  rtpulpfecenc: RTP FEC Encoder
rtp:  rtpulpfecdec: RTP FEC Decoder
rtp:  rtpreddec: Redundant Audio Data (RED) Decoder
rtp:  rtpredenc: Redundant Audio Data (RED) Encoder
rtp:  rtpstreamdepay: RTP Stream Depayloading
rtp:  rtpstreampay: RTP Stream Payloading
rtp:  rtpvrawpay: RTP Raw Video payloader
rtp:  rtpvrawdepay: RTP Raw Video depayloader
rtp:  rtpvp9pay: RTP VP9 payloader
rtp:  rtpvp9depay: RTP VP9 depayloader
rtp:  rtpvp8pay: RTP VP8 payloader
rtp:  rtpvp8depay: RTP VP8 depayloader
rtp:  rtpvorbispay: RTP Vorbis payloader
rtp:  rtpvorbisdepay: RTP Vorbis depayloader
rtp:  rtptheorapay: RTP Theora payloader
rtp:  rtptheoradepay: RTP Theora depayloader
rtp:  rtpsv3vdepay: RTP SVQ3 depayloader
rtp:  rtpspeexdepay: RTP Speex depayloader
rtp:  rtpspeexpay: RTP Speex payloader
rtp:  rtpsirendepay: RTP Siren packet depayloader
rtp:  rtpsirenpay: RTP Payloader for Siren Audio
rtp:  rtpsbcpay: RTP packet payloader
rtp:  rtpsbcdepay: RTP SBC audio depayloader
rtp:  rtpqdm2depay: RTP QDM2 depayloader
rtp:  rtpqcelpdepay: RTP QCELP depayloader
rtp:  rtpmp4gpay: RTP MPEG4 ES payloader
rtp:  rtpmp4gdepay: RTP MPEG4 ES depayloader
rtp:  rtpmp4adepay: RTP MPEG4 audio depayloader
rtp:  rtpmp4apay: RTP MPEG4 audio payloader
rtp:  rtpmp4vdepay: RTP MPEG4 video depayloader
rtp:  rtpmp4vpay: RTP MPEG4 Video payloader
rtp:  rtpmp2tpay: RTP MPEG2 Transport Stream payloader
rtp:  rtpmp2tdepay: RTP MPEG Transport Stream depayloader
rtp:  rtpmp1sdepay: RTP MPEG1 System Stream depayloader
rtp:  asteriskh263: RTP Asterisk H263 depayloader
rtp:  rtpL24depay: RTP audio depayloader
rtp:  rtpL24pay: RTP audio payloader
rtp:  rtpL16depay: RTP audio depayloader
rtp:  rtpL16pay: RTP audio payloader
rtp:  rtpL8depay: RTP audio depayloader
rtp:  rtpL8pay: RTP audio payloader
rtp:  rtpklvpay: RTP KLV Payloader
rtp:  rtpklvdepay: RTP KLV Depayloader
rtp:  rtpjpegpay: RTP JPEG payloader
rtp:  rtpjpegdepay: RTP JPEG depayloader
rtp:  rtpj2kpay: RTP JPEG 2000 payloader
rtp:  rtpj2kdepay: RTP JPEG 2000 depayloader
rtp:  rtph265pay: RTP H265 payloader
rtp:  rtph265depay: RTP H265 depayloader
rtp:  rtph264pay: RTP H264 payloader
rtp:  rtph264depay: RTP H264 depayloader
rtp:  rtph263pay: RTP H263 packet payloader
rtp:  rtph263depay: RTP H263 depayloader
rtp:  rtph263pdepay: RTP H263 depayloader
rtp:  rtph263ppay: RTP H263 payloader
rtp:  rtph261depay: RTP H261 depayloader
rtp:  rtph261pay: RTP H261 packet payloader
rtp:  rtpopuspay: RTP Opus payloader
rtp:  rtpopusdepay: RTP Opus packet depayloader
rtp:  rtpmpvpay: RTP MPEG2 ES video payloader
rtp:  rtpmpvdepay: RTP MPEG video depayloader
rtp:  rtpmparobustdepay: RTP MPEG audio depayloader
rtp:  rtpmpapay: RTP MPEG audio payloader
rtp:  rtpmpadepay: RTP MPEG audio depayloader
rtp:  rtppcmapay: RTP PCMA payloader
rtp:  rtppcmupay: RTP PCMU payloader
rtp:  rtppcmudepay: RTP PCMU depayloader
rtp:  rtppcmadepay: RTP PCMA depayloader
rtp:  rtpamrpay: RTP AMR payloader
rtp:  rtpamrdepay: RTP AMR depayloader
rtp:  rtpgsmpay: RTP GSM payloader
rtp:  rtpgsmdepay: RTP GSM depayloader
rtp:  rtpg729pay: RTP G.729 payloader
rtp:  rtpg729depay: RTP G.729 depayloader
rtp:  rtpg726pay: RTP G.726 payloader
rtp:  rtpg726depay: RTP G.726 depayloader
rtp:  rtpg723pay: RTP G.723 payloader
rtp:  rtpg723depay: RTP G.723 depayloader
rtp:  rtpg722pay: RTP audio payloader
rtp:  rtpg722depay: RTP audio depayloader
rtp:  rtpilbcdepay: RTP iLBC depayloader
rtp:  rtpilbcpay: RTP iLBC Payloader
rtp:  rtpgstpay: RTP GStreamer payloader
rtp:  rtpgstdepay: GStreamer depayloader
rtp:  rtpdvpay: RTP DV Payloader
rtp:  rtpdvdepay: RTP DV Depayloader
rtp:  rtpceltpay: RTP CELT payloader
rtp:  rtpceltdepay: RTP CELT depayloader
rtp:  rtpbvpay: RTP BV Payloader
rtp:  rtpbvdepay: RTP BroadcomVoice depayloader
rtp:  rtpac3pay: RTP AC3 audio payloader
rtp:  rtpac3depay: RTP AC3 depayloader
rsvg:  rsvgdec: SVG image decoder
rsvg:  rsvgoverlay: RSVG overlay
rfbsrc:  rfbsrc: Rfb source
replaygain:  rgvolume: ReplayGain volume
replaygain:  rglimiter: ReplayGain limiter
replaygain:  rganalysis: ReplayGain analysis
removesilence:  removesilence: RemoveSilence
rawparse:  rawvideoparse: rawvideoparse
rawparse:  rawaudioparse: rawaudioparse
rawparse:  unalignedvideoparse: unalignedvideoparse
rawparse:  unalignedaudioparse: unalignedaudioparse
pnm:  pnmenc: PNM image encoder
pnm:  pnmdec: PNM image decoder
png:  pngenc: PNG image encoder
png:  pngdec: PNG image decoder
playback:  parsebin: Parse Bin
playback:  urisourcebin: URI reader
playback:  uridecodebin3: URI Decoder
playback:  uridecodebin: URI Decoder
playback:  decodebin3: Decoder Bin 3
playback:  decodebin: Decoder Bin
playback:  streamsynchronizer: Stream Synchronizer
playback:  subtitleoverlay: Subtitle Overlay
playback:  playsink: Player Sink
playback:  playbin3: Player Bin 3
playback:  playbin: Player Bin 2
pcapparse:  irtspparse: IRTSPParse
pcapparse:  pcapparse: PCapParse
pango:  textrender: Text renderer
pango:  clockoverlay: Clock overlay
pango:  timeoverlay: Time overlay
pango:  textoverlay: Text overlay
opusparse:  opusparse: Opus audio parser
opus:  opusdec: Opus audio decoder
opus:  opusenc: Opus audio encoder
openjpeg:  openjpegenc: OpenJPEG JPEG2000 encoder
openjpeg:  openjpegdec: OpenJPEG JPEG2000 decoder
openglmixers:  glmosaic: OpenGL mosaic
openglmixers:  glstereomix: OpenGL stereo video combiner
openglmixers:  glvideomixerelement: OpenGL video_mixer
openglmixers:  glvideomixer: OpenGL video_mixer bin
openglmixers:  glmixerbin: OpenGL video_mixer empty bin
opengl:  gldifferencematte: Gstreamer OpenGL DifferenceMatte
opengl:  glfilterglass: OpenGL glass filter
opengl:  gloverlay: Gstreamer OpenGL Overlay
opengl:  gldeinterlace: OpenGL deinterlacing filter
opengl:  gltestsrc: Video test source
opengl:  glstereosplit: GLStereoSplit
opengl:  glviewconvert: OpenGL Multiview/3D conversion filter
opengl:  glfilterapp: OpenGL application filter
opengl:  glshader: OpenGL fragment shader filter
opengl:  glcolorscale: OpenGL color scale
opengl:  gleffects_laplacian: Laplacian Convolution Demo Effect
opengl:  gleffects_blur: Blur with 9x9 separable convolution Effect
opengl:  gleffects_sobel: Sobel edge detection Effect
opengl:  gleffects_glow: Glow Lighting Effect
opengl:  gleffects_sin: All Grey but Red Effect
opengl:  gleffects_xray: Glowing negative effect
opengl:  gleffects_lumaxpro: Luma Cross Processing Effect
opengl:  gleffects_xpro: Cross Processing Effect
opengl:  gleffects_sepia: Sepia Toning Effect
opengl:  gleffects_heat: Heat Signature Effect
opengl:  gleffects_square: Square Effect
opengl:  gleffects_bulge: Bulge Effect
opengl:  gleffects_twirl: Twirl Effect
opengl:  gleffects_fisheye: FishEye Effect
opengl:  gleffects_tunnel: Light Tunnel Effect
opengl:  gleffects_stretch: Stretch Effect
opengl:  gleffects_squeeze: Squeeze Effect
opengl:  gleffects_mirror: Mirror Effect
opengl:  gleffects_identity: Do nothing Effect
opengl:  gleffects: Gstreamer OpenGL Effects
opengl:  glvideoflip: OpenGL video flip filter
opengl:  gltransformation: OpenGL transformation filter
opengl:  glfiltercube: OpenGL cube filter
opengl:  glsrcbin: GL Src Bin
opengl:  glsinkbin: GL Sink Bin
opengl:  glfilterbin: GL Filter Bin
opengl:  glcolorbalance: Video balance
opengl:  glcolorconvert: OpenGL color converter
opengl:  gldownload: OpenGL downloader
opengl:  glupload: OpenGL uploader
opengl:  glimagesinkelement: OpenGL video sink
opengl:  glimagesink: GL Sink Bin
ogg:  oggaviparse: Ogg AVI parser
ogg:  oggparse: Ogg parser
ogg:  ogmtextparse: OGM text stream parser
ogg:  ogmvideoparse: OGM video stream parser
ogg:  ogmaudioparse: OGM audio stream parser
ogg:  oggmux: Ogg muxer
ogg:  oggdemux: Ogg demuxer
nice:  nicesink: ICE sink
nice:  nicesrc: ICE source
mxf:  mxfmux: MXF muxer
mxf:  mxfdemux: MXF Demuxer
multipart:  multipartmux: Multipart muxer
multipart:  multipartdemux: Multipart demuxer
multifile:  splitmuxsrc: Split File Demuxing Bin
multifile:  splitmuxsink: Split Muxing Bin
multifile:  splitfilesrc: Split-File Source
multifile:  multifilesink: Multi-File Sink
multifile:  multifilesrc: Multi-File Source
mulaw:  mulawdec: Mu Law audio decoder
mulaw:  mulawenc: Mu Law audio encoder
mpg123:  mpg123audiodec: mpg123 mp3 decoder
midi:  midiparse: MidiParse
matroska:  webmmux: WebM muxer
matroska:  matroskamux: Matroska muxer
matroska:  matroskaparse: Matroska parser
matroska:  matroskademux: Matroska demuxer
level:  level: Level
legacyrawparse:  audioparse: Audio Parse
legacyrawparse:  videoparse: Video Parse
lame:  lamemp3enc: L.A.M.E. mp3 encoder
kate:  katetag: Kate stream tagger
kate:  kateparse: Kate stream parser
kate:  kateenc: Kate stream encoder
kate:  katedec: Kate stream text decoder
jpegformat:  jifmux: JPEG stream muxer
jpegformat:  jpegparse: JPEG stream parser
jpeg:  jpegdec: JPEG image decoder
jpeg:  jpegenc: JPEG image encoder
ivtc:  combdetect: Comb Detect
ivtc:  ivtc: Inverse Telecine
isomp4:  qtmoovrecover: QT Moov Recover
isomp4:  mj2mux: MJ2 Muxer
isomp4:  3gppmux: 3GPP Muxer
isomp4:  ismlmux: ISML Muxer
isomp4:  mp4mux: MP4 Muxer
isomp4:  qtmux: QuickTime Muxer
isomp4:  rtpxqtdepay: RTP packet depayloader
isomp4:  qtdemux: QuickTime demuxer
interleave:  deinterleave: Audio deinterleaver
interleave:  interleave: Audio interleaver
interlace:  interlace: Interlace filter
inter:  intervideosink: Internal video sink
inter:  intervideosrc: Internal video source
inter:  intersubsink: Internal subtitle sink
inter:  intersubsrc: Internal subtitle source
inter:  interaudiosink: Internal audio sink
inter:  interaudiosrc: Internal audio source
id3tag:  id3mux: ID3 v1 and v2 Muxer
id3demux:  id3demux: ID3 tag demuxer
icydemux:  icydemux: ICY tag demuxer
hls:  hlssink2: HTTP Live Streaming sink
hls:  hlssink: HTTP Live Streaming sink
hls:  hlsdemux: HLS Demuxer
goom2k1:  goom2k1: GOOM: what a GOOM! 2k1 edition
goom:  goom: GOOM: what a GOOM!
geometrictransform:  perspective: perspective
geometrictransform:  fisheye: fisheye
geometrictransform:  mirror: mirror
geometrictransform:  square: square
geometrictransform:  tunnel: tunnel
geometrictransform:  bulge: bulge
geometrictransform:  stretch: stretch
geometrictransform:  waterripple: waterripple
geometrictransform:  twirl: twirl
geometrictransform:  sphere: sphere
geometrictransform:  rotate: rotate
geometrictransform:  pinch: pinch
geometrictransform:  marble: marble
geometrictransform:  kaleidoscope: kaleidoscope
geometrictransform:  diffuse: diffuse
geometrictransform:  circle: circle
gdp:  gdppay: GDP Payloader
gdp:  gdpdepay: GDP Depayloader
gdkpixbuf:  gdkpixbufsink: GdkPixbuf sink
gdkpixbuf:  gdkpixbufoverlay: GdkPixbuf Overlay
gdkpixbuf:  gdkpixbufdec: GdkPixbuf image decoder
gaudieffects:  gaussianblur: GstGaussianBlur
gaudieffects:  solarize: Solarize
gaudieffects:  exclusion: Exclusion
gaudieffects:  dodge: Dodge
gaudieffects:  dilate: Dilate
gaudieffects:  chromium: Chromium
gaudieffects:  burn: Burn
freeverb:  freeverb: Reverberation/room effect
flxdec:  flxdec: FLX video decoder
flv:  flvmux: FLV muxer
flv:  flvdemux: FLV Demuxer
flac:  flactag: FLAC tagger
flac:  flacdec: FLAC audio decoder
flac:  flacenc: FLAC audio encoder
fieldanalysis:  fieldanalysis: Video field analysis
equalizer:  equalizer-10bands: 10 Band Equalizer
equalizer:  equalizer-3bands: 3 Band Equalizer
equalizer:  equalizer-nbands: N Band Equalizer
effectv:  rippletv: RippleTV effect
effectv:  streaktv: StreakTV effect
effectv:  radioactv: RadioacTV effect
effectv:  optv: OpTV effect
effectv:  quarktv: QuarkTV effect
effectv:  revtv: RevTV effect
effectv:  vertigotv: VertigoTV effect
effectv:  shagadelictv: ShagadelicTV
effectv:  warptv: WarpTV effect
effectv:  dicetv: DiceTV effect
effectv:  agingtv: AgingTV effect
effectv:  edgetv: EdgeTV effect
dvdspu:  dvdspu: Sub-picture Overlay
dvbsuboverlay:  dvbsuboverlay: DVB Subtitles Overlay
dv:  dvdec: DV video decoder
dv:  dvdemux: DV system stream demuxer
dtmf:  rtpdtmfdepay: RTP DTMF packet depayloader
dtmf:  rtpdtmfsrc: RTP DTMF packet generator
dtmf:  dtmfsrc: DTMF tone generator
directsound:  directsoundsinkdeviceprovider (GstDeviceProviderFactory)
directsound:  directsoundsink: Direct Sound Audio Sink
deinterlace:  deinterlace: Deinterlacer
debugutilsbad:  fakevideosink: Fake Video Sink
debugutilsbad:  errorignore: Convert some GstFlowReturn types into others
debugutilsbad:  watchdog: Watchdog
debugutilsbad:  debugspy: DebugSpy
debugutilsbad:  compare: Compare buffers
debugutilsbad:  chopmydata: FIXME
debugutilsbad:  fpsdisplaysink: Measure and show framerate on videosink
debugutilsbad:  checksumsink: Checksum sink
debug:  cpureport: CPU report
debug:  testsink: Test plugin
debug:  taginject: TagInject
debug:  progressreport: Progress report
debug:  pushfilesrc: Push File Source
debug:  navseek: Seek based on left-right arrows
debug:  rndbuffersize: Random buffer size
debug:  capssetter: CapsSetter
debug:  breakmydata: Break my data
dashdemux:  dashdemux: DASH Demuxer
d3d:  d3dvideosink: Direct3D video sink
cutter:  cutter: Audio cutter
coreelements:  streamiddemux: Streamid Demux
coreelements:  valve: Valve element
coreelements:  multiqueue: MultiQueue
coreelements:  typefind: TypeFind
coreelements:  tee: Tee pipe fitting
coreelements:  filesink: File Sink
coreelements:  queue2: Queue 2
coreelements:  queue: Queue
coreelements:  output-selector: Output selector
coreelements:  input-selector: Input selector
coreelements:  identity: Identity
coreelements:  funnel: Funnel pipe fitting
coreelements:  filesrc: File Source
coreelements:  fakesink: Fake Sink
coreelements:  fakesrc: Fake Source
coreelements:  downloadbuffer: DownloadBuffer
coreelements:  dataurisrc: data: URI source element
coreelements:  concat: Concat
coreelements:  capsfilter: CapsFilter
compositor:  compositor: Compositor
coloreffects:  chromahold: Chroma hold filter
coloreffects:  coloreffects: Color Look-up Table filter
cairo:  cairooverlay: Cairo overlay
bayer:  rgb2bayer: RGB to Bayer converter
bayer:  bayer2rgb: Bayer to RGB decoder for cameras
avi:  avisubtitle: Avi subtitle parser
avi:  avimux: Avi muxer
avi:  avidemux: Avi demuxer
auparse:  auparse: AU audio demuxer
audiovisualizers:  wavescope: Waveform oscilloscope
audiovisualizers:  synaescope: Synaescope
audiovisualizers:  spectrascope: Frequency spectrum scope
audiovisualizers:  spacescope: Stereo visualizer
audiotestsrc:  audiotestsrc: Audio test source
audioresample:  audioresample: Audio resampler
audiorate:  audiorate: Audio rate adjuster
audioparsers:  wavpackparse: Wavpack audio stream parser
audioparsers:  sbcparse: SBC audio parser
audioparsers:  mpegaudioparse: MPEG1 Audio Parser
audioparsers:  flacparse: FLAC audio parser
audioparsers:  dcaparse: DTS Coherent Acoustics audio stream parser
audioparsers:  ac3parse: AC3 audio stream parser
audioparsers:  amrparse: AMR audio stream parser
audioparsers:  aacparse: AAC audio stream parser
audiomixer:  audiointerleave: AudioInterleave
audiomixer:  liveadder: AudioMixer
audiomixer:  audiomixer: AudioMixer
audiofxbad:  audiochannelmix: Simple stereo audio mixer
audiofx:  scaletempo: Scaletempo
audiofx:  audioecho: Audio echo
audiofx:  audiofirfilter: Audio FIR filter
audiofx:  audiowsincband: Band pass & band reject filter
audiofx:  audiowsinclimit: Low pass & high pass filter
audiofx:  audioiirfilter: Audio IIR filter
audiofx:  audiochebband: Band pass & band reject filter
audiofx:  audiocheblimit: Low pass & high pass filter
audiofx:  audiodynamic: Dynamic range controller
audiofx:  audioamplify: Audio amplifier
audiofx:  audiokaraoke: AudioKaraoke
audiofx:  audioinvert: Audio inversion
audiofx:  audiopanorama: Stereo positioning
audioconvert:  audioconvert: Audio converter
audiobuffersplit:  audiobuffersplit: Audio Buffer Split
app:  appsink: AppSink
app:  appsrc: AppSrc
apetag:  apedemux: APE tag demuxer
alphacolor:  alphacolor: Alpha color filter
alpha:  alpha: Alpha filter
alaw:  alawdec: A Law audio decoder
alaw:  alawenc: A Law audio encoder
aiff:  aiffmux: AIFF audio muxer
aiff:  aiffparse: AIFF audio demuxer
adpcmenc:  adpcmenc: ADPCM encoder
adpcmdec:  adpcmdec: ADPCM decoder
adder:  adder: Adder
accurip:  accurip: AccurateRip(TM) CRC element
subenc:  srtenc: Srt encoder
subenc:  webvttenc: WebVTT encoder
proxy:  proxysrc: Proxy source
proxy:  proxysink: Proxy Sink
imagefreeze:  imagefreeze: Still frame stream generator
dtls:  dtlsenc: DTLS Encoder
dtls:  dtlsdec: DTLS Decoder
dtls:  dtlssrtpdec: DTLS-SRTP Decoder
dtls:  dtlssrtpenc: DTLS-SRTP Encoder
dtls:  dtlssrtpdemux: DTLS SRTP Demultiplexer
coretracers:  latency (GstTracerFactory)
coretracers:  log (GstTracerFactory)
coretracers:  stats (GstTracerFactory)
coretracers:  leaks (GstTracerFactory)
autodetect:  autovideosink: Auto video sink
autodetect:  autovideosrc: Auto video source
autodetect:  autoaudiosink: Auto audio sink
autodetect:  autoaudiosrc: Auto audio source
autoconvert:  autoconvert: Select convertor based on caps
autoconvert:  autovideoconvert: Select color space convertor based on caps
staticelements:  bin: Generic bin
staticelements:  pipeline: Pipeline object

Total count: 149 plugins, 671 features
    0
  • Lifetime Qt Champion

    Then use the openh264enc encoder in place of the other.

    1 1 Reply

  • @SGaist thanks for the suggestion,

    I tryed to adapt this exemple with openh264enc :

    gst-launch-1.0 -v rfbsrc host=10.81.4.97 port=5900 password=pa009v view-only=true ! queue ! openh264enc ! "video/x-h264, stream-format=(string)byte-stream" ! h264parse ! qtmux ! filesink location=test.mp4

    output:

    WARNING: erroneous pipeline: could not link queue0 to openh264enc0

    if i remove the 'queue' element then i got

    WARNING: erroneous pipeline: could not link rfbsrc0 to openh264enc0

    How to link my rfbsrc to openh264enc please ?

    0

  • I tryed to add 'decodebin' between my rfbsrc and the openh264enc ,

    Now i have format issue again.. a .mp4 file is created but empty, can this be related to my VNC Server ? i use Ultra VNC as server

    gst-launch-1.0 -v rfbsrc host=xx.xx.x.xx port=5900 password=xxxx view-only=true ! decodebin ! "video/x-h264, stream-format=(string)byte-stream" ! openh264enc ! h264parse ! qtmux ! filesink location=test.mp4 

    Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock

** (gst-launch-1.0:8476): CRITICAL **: gst_video_info_set_format: assertion 'format != GST_VIDEO_FORMAT_UNKNOWN' failed

** (gst-launch-1.0:8476): CRITICAL **: gst_video_info_to_caps: assertion 'info->finfo->format != GST_VIDEO_FORMAT_UNKNOWN' failed

(gst-launch-1.0:8476): GStreamer-CRITICAL **: gst_event_new_caps: assertion 'caps != NULL' failed

(gst-launch-1.0:8476): GStreamer-CRITICAL **: gst_pad_push_event: assertion 'GST_IS_EVENT (event)' failed

(gst-launch-1.0:8476): GStreamer-CRITICAL **: gst_mini_object_unref: assertion 'mini_object != NULL' failed
ERROR: from element /GstPipeline:pipeline0/GstRfbSrc:rfbsrc0: Internal data stream error.
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstRfbSrc:rfbsrc0:
streaming stopped, reason not-negotiated (-4)
Execution ended after 0:00:00.697763210
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
    0

  • Hi,
    @SGaist I finally made this working pipeline :

    gst-launch-1.0 -v rfbsrc host=xx.xx.x.xx port=5900 password=passw view-only=true ! videoconvert !  openh264enc !  "video/x-h264, stream-format=(string)byte-stream" ! openh264dec !  autovideosink

    The remote gui is displayed in an internal GStreamer window .

    Now i only replace the autovideosink by filesink location=vid.mp4 to save the video to a file instead of displaying it.

    gst-launch-1.0 -v rfbsrc host=xx.xx.x.xx port=5900 password=passw view-only=true ! videoconvert !  openh264enc !  "video/x-h264, stream-format=(string)byte-stream" ! openh264dec !  filesink location=vid.mp4

    The video file is created (and not empty) but i can't play it with WindowsMediaPlayer or VLC
    I tryed filesink location=vid.h264 and enabled H264 Demuxer for VLC but still can't open the file.

    edit :
    In some exemples i can see that the last step before filesink is XXXXmux , but if i try

    gst-launch-1.0 -v rfbsrc host=10.81.4.68 port=5900 password=pa009v view-only=true ! videoconvert !  openh264enc  ! flvmux  !  filesink location=test.flv

    i get : WARNING: erroneous pipeline: could not link openh264enc0 to flvmux0

    Thank you for any suggestion

    0

  • I added missing h264parse and mp4mux before writing to the file

    Now the pipeline looks like this :

    gst-launch-1.0 -v rfbsrc host=xx.xx.x.xx port=5900 password=passw view-only=true 
!  videoconvert ! openh264enc bitrate=4096 
! "video/x-h264, stream-format=(string)byte-stream" 
! h264parse 
! mp4mux 
! filesink location=video.mp4  sync=false

    but the video file is still not 'playable'
    i read on github
    "Some muxers such as mp4mux write additional information to disk when they receive EOS. Without that extra information, the file is useless."

    so i try to pass -e instead of -v , the file is created and grows in size (still not playable), but when i press ctrl+c to stop i get this error :

    handling interrupt.Interrupt: Stopping pipeline ...EOS on shutdown enabled -- Forcing EOS on the pipeline
Waiting for EOS...ERROR: from element /GstPipeline:pipeline0/GstRfbSrc:rfbsrc0: Error on setup VNC connection to host xx.xx.x.xx on port 5900Additional debug info:
gstrfbsrc.c(524): gst_rfb_src_fill (): /GstPipeline:pipeline0/GstRfbSrc:rfbsrc0
An error happened while waiting for EOS
Execution ended after 0:00:07.166707941
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

    Now there is a probleme with the VNC connection ?

    I think no, because i did the same thing unsig tee and the connection looks ok, the stream is displayed, pressing ctrl+c i have the same output saying "Error on setup VNC connection to host..."

    tee version (stream is displayed / file created but not readable ) :

    gst-launch-1.0 -e rfbsrc host=xx.xx.x.xx port=5900 password=passw view-only=true
!  videoconvert 
! tee name = t
! queue 
! openh264enc bitrate=4096  
! "video/x-h264, stream-format=(string)byte-stream"
! h264parse 
! mp4mux
! filesink location=video.mp4  sync=false 
t. 
! queue 
! autovideosink
    0
  • Lifetime Qt Champion

    A silly question, did you try to read the file with gstreamer directly ?

    1

  • @SGaist hi!
    Yes, i had that idea only this morning.. Everything works almost as expected.

    This will Display / Record :

    gst-launch-1.0 -e rfbsrc host=xx.xx.x.xx port=5900 password=passw view-only=true !  videoconvert !  tee name = t t. ! queue ! openh264enc bitrate=4096  ! "video/x-h264, stream-format=(string)byte-stream" ! h264parse ! mp4mux ! filesink location=capture.mp4  sync=false t. ! queue ! autovideosink

    This will read the recorded .mp4 file

    gst-launch-1.0 playbin uri=file:///c:/users/lev/documents/VNC_CLIENT_Tests/capture.mp4

    So everything works, but the video quality/ framerate are very bad... if something happends on the remote pc i have to wailt 2~3 secondes before i see it. Even with the official Viewer. I Abandon this solution, unless someone has a trick to highly optimize this.

    My first solution with your QVNCClient (it is made by you right ?) works much better with 15 ips capture.
    Then i reconstruct a video combining the images (even if simetimes i have desync of maximum 1 sec)

    Thank you again for your valuable help !

    [edit: fixed link SGaist]

    0
  • Lifetime Qt Champion

    Maybe another encoder could work better.

    No, QVNCClient is not from me, I just found it :)

    1
Log in to reply