The Qt version is 6.8.3. The app is built in Release mode.
Here's the content of Main.qml:
import QtQuick
import QtQuick.Controls.Basic
import QtMultimedia
Window {
width: 1024
height: 600
visible: true
title: qsTr("Hello World")
Button {
id: btnPlay
text: "Play"
x: 10
y: 10
width: 100
height: 50
onClicked: {
console.log("Play!")
if (vid.playbackState === MediaPlayer.PlayingState) {
vid.pause();
} else {
vid.play();
}
}
}
Video {
id:vid
visible: true
enabled: false
x: 70
y: 70
//Set to same as video
width: 768
height: 450
source: "qrc:/path/to/vid.avi"
muted: true
autoPlay: false
loops: MediaPlayer.Infinite
onErrorChanged: console.log("Video error occurred: ", errorString, "(", error, ")")
}
}
Here's the output of ffmpeg:
# ./ffmpeg -re -i /path/to/vid.avi -pix_fmt rgb565 -f fbdev /dev/fb0
ffmpeg version N-121955-g413346bd06 Copyright (c) 2000-2025 the FFmpeg developers
built with gcc 13.4.0 (GCC)
configuration: --enable-cross-compile --target-os=linux --arch=armv7l --prefix=/path/to/build --extra-cflags=-I/path/to/build/include --extra-ldflags=-L/path/to/build/lib --extra-libs=-lpthread --extra-libs=-lm --bindir=/path/to/bin --enable-gpl --enable-nonfree --disable-x86asm --disable-asm --cc='arm-dey-linux-gnueabi-gcc -mthumb -mfpu=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7 -fstack-protector-strong -O2 -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64 --sysroot=/opt/dey/5.0-r2/ccmp15-dvk/sysroots/cortexa7t2hf-neon-vfpv4-dey-linux-gnueabi' --strip=arm-dey-linux-gnueabi-strip
libavutil 60. 19.101 / 60. 19.101
libavcodec 62. 21.100 / 62. 21.100
libavformat 62. 6.103 / 62. 6.103
libavdevice 62. 2.100 / 62. 2.100
libavfilter 11. 10.101 / 11. 10.101
libswscale 9. 3.100 / 9. 3.100
libswresample 6. 2.100 / 6. 2.100
Input #0, avi, from '/path/to/vid.avi':
Metadata:
software : VLC Media Player - 3.0.21 Vetinari
Duration: 00:00:23.87, start: 0.000000, bitrate: 1224 kb/s
Stream #0:0: Video: msmpeg4v2 (DIV2 / 0x32564944), yuv420p, 768x456, 1224 kb/s, 15 fps, 15 tbr, 15 tbn
Stream mapping:
Stream #0:0 -> #0:0 (msmpeg4v2 (native) -> rawvideo (native))
Press [q] to stop, [?] for help
[vist#0:0/msmpeg4v2 @ 0x46dee80] Resumed reading at pts 0.000 with rate 1.050 after a lag of 0.500s
[swscaler @ 0xb520c080] No accelerated colorspace conversion found from yuv420p to rgb565le.
[swscaler @ 0xb520c080] [swscaler @ 0xb5219280] No accelerated colorspace conversion found from yuv420p to rgb565le.
[swscaler @ 0xb520c080] [swscaler @ 0xb5226220] No accelerated colorspace conversion found from yuv420p to rgb565le.
[swscaler @ 0xb520c080] [swscaler @ 0xb52331c0] No accelerated colorspace conversion found from yuv420p to rgb565le.
Output #0, fbdev, to '/dev/fb0':
Metadata:
software : VLC Media Player - 3.0.21 Vetinari
encoder : Lavf62.6.103
Stream #0:0: Video: rawvideo (RGB[16] / 0x10424752), rgb565le(pc, gbr/unknown/unknown, progressive), 768x456, q=2-31, 84044 kb/s, 15 fps, 15 tbn
Metadata:
encoder : Lavc62.21.100 rawvideo
[out#0/fbdev @ 0x46e1b40] video:59508KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: unknown
frame= 87 fps= 16 q=-0.0 Lsize=N/A time=00:00:05.80 bitrate=N/A speed=1.05x elapsed=0:00:05.53
And here's the output of the Qt app:
# LD_LIBRARY_PATH="/opt/Qt/lib" QT_PLUGIN_PATH="/opt/Qt/plugins" QML2_IMPORT_PATH="/opt/Qt/lib/qml" QT_QPA_PLATFORM=eglfs /path/to/app
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, but has failed to switch to one.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
Failed to move cursor on screen HDMI1: -14
Failed to move cursor on screen HDMI1: -14
xkbcommon: ERROR: failed to add default include path /usr/share/X11/xkb
Failed to create xkb context
qt.multimedia.ffmpeg: Using Qt multimedia with FFmpeg version 6.1.2 LGPL version 2.1 or later
Input #0, avi, from '/tmp/appIS3.OpUgoR.avi':
Metadata:
software : VLC Media Player - 3.0.21 Vetinari
Duration: 00:00:23.87, start: 0.000000, bitrate: 1224 kb/s
Stream #0:0: Video: msmpeg4v2 (DIV2 / 0x32564944), yuv420p, 768x456, 1224 kb/s, 15 fps, 15 tbr, 15 tbn
qml: Play!
qt.multimedia.playbackengine.codec: "No HW decoder found"
