Not work Video stream

Mihaill

Hi.
I use Windows, install VLC and K-Lite Codec Pack.
I get videostream. When stream using codec mp4v- all work fine. But when stream with h264 - video not work.
How I can show video with h264?

Christian Ehrlicher

I don't see what this should have to do with Qt programming...

Mihaill

@Christian-Ehrlicher how Qt using codecs?
I think that Qt not load codec, becouse I can plaing video ub VLC player on my windows.

Christian Ehrlicher

You neither specified what you're doing with Qt nor show us any source code or even if it's related to Qt at all - so how should we answer you in a useful manner?

Mihaill

@Christian-Ehrlicher its my code, another strem with another codec work with this code, this stream not work.

import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15
import QtMultimedia 5.15

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Video {
        id: video

        anchors.fill: parent

        loops: Animation.Infinite
        source: "rtsp://stream.lesohranitel.ru:554/RU.32.02/"
        Component.onCompleted: {
            video.play()
        }
    }
}

JoeCFD

@Mihaill Your Qt version? Qt5 and Qt6 could be very different.

Mihaill

@JoeCFD I use 5.15

Mihaill

And I have this codecs:

ICM	Cinepak,      Radius	cvid	iccvid.dll	1.10.0.12
ICM	Intel IYUV	IYUV	iyuv_32.dll	10.0.19041.1
ICM	Microsoft RLE	MRLE	msrle32.dll	10.0.19041.1
ICM	Microsoft Video 1	MSVC	msvidc32.dll	10.0.19041.1
ICM	Microsoft YUV	UYVY	msyuv.dll	10.0.19041.1
ICM	Toshiba YUV Codec	Y411	tsbyuv.dll	10.0.19041.1
ICM	Microsoft YUV	UYVY	msyuv.dll	10.0.19041.1
ICM	Xvid MPEG-4 Codec	XVID		
ICM	x264vfw - H.264/MPEG-4 AVC codec	X264	x264vfw.dll	44.2851.44825.0
ICM	Lagarith Lossless Codec	LAGS	lagarith.dll	1.3.27.0
DMO	Mpeg4s Decoder DMO	mp4s, MP4S, m4s2, M4S2, MP4V, mp4v, XVID, xvid, DIVX, DX50	mp4sdecd.dll	10.0.19041.1706
DMO	WMV Screen decoder DMO	MSS1, MSS2	wmvsdecd.dll	10.0.19041.1
DMO	WMVideo Decoder DMO	WMV1, WMV2, WMV3, WMVA, WVC1, WMVP, WVP2, VC1S	wmvdecod.dll	10.0.19041.2604
DMO	Mpeg43 Decoder DMO	mp43, MP43	mp43decd.dll	10.0.19041.1165
DMO	Mpeg4 Decoder DMO	MPG4, mpg4, mp42, MP42	mpg4decd.dll	10.0.19041.1165

JoeCFD

@Mihaill if vlc works, you can try to check its qt lib which has qml part.
https://vlc-qt.tano.si/

Mihaill

@JoeCFD Is it possible to set up a video stream using qt?

JoeCFD

@Mihaill Of course. I use Qt5 + Qt Gstreamer + gstreamer to do it. Unluckily, Qt gstreamer is not maintained anymore. It has a few leaks as well. But you can use qml sink + qml GUI + gstreamer to stream. I guess you can also feed a gstreamer pipeline into qt multimedia for streaming. However, it is not flexible for you to manipulate your pipeline. I have not tried Qt6 for streaming. Qt6 may be more FFmpeg oriented. Do your research.

If h264 codec does not work on Windows, you need a tool to check if it is available. I know how to check it on Linux, but do not know how to do it on Windows.