QtAVPlayer

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Integration in digiKam (Qt5): some helps required.

55

Hi, First, thanks for sharing your code. It's very appreciated. In digiKam, we would use the ffmpeg backend to play audio and video as the GStreamer backend from Qt5Multimedia is...

cgilles

valbok

Using hardware decoding in videotoolbox_vld FFmpeg: [mpeg4 @ 0x13401b0c0] Failed setup for format videotoolbox_vld: hwaccel initialisation returned error.

3

valbok

FAIL! : tst_QAVPlayer::multipleFilters() '(framesCount.contains("panel_0"))' returned FALSE. () .\tst_qavplayer.cpp(3048) : failure location

2

Windows

valbok

QT_AVPLAYER_NO_HWDEVICE=1 ./qml_video.app/Contents/MacOS/qml_video ~/Downloads/SMTHMP05006_JUNGLE.mp4 "sws_flags=neighbor;split=4[x1][x2][x3][x4];[x1]format=yuv444p,scale[y1];[x2]format=yuv422p10le,waveform=intensity=0.1:mode=column:mirror=1:c=1:f=0:graticule=green:flags=numbers+dots:scale=0[z2];[z2][y1]scale2ref[y2][y1];[x3]format=yuv422p10le, split=10[b0][b1][b2][b3][b4][b5][b6][b7][b8][b9]; [b0]crop=iw/10:ih:(iw/10)*0:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-1))*pow(2\,1)[b0c]; [b1]crop=iw/10:ih:(iw/10)*1:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-2))*pow(2\,2)[b1c]; [b2]crop=iw/10:ih:(iw/10)*2:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-3))*pow(2\,3)[b2c]; [b3]crop=iw/10:ih:(iw/10)*3:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-4))*pow(2\,4)[b3c]; [b4]crop=iw/10:ih:(iw/10)*4:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-5))*pow(2\,5)[b4c]; [b5]crop=iw/10:ih:(iw/10)*5:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-6))*pow(2\,6)[b5c]; [b6]crop=iw/10:ih:(iw/10)*6:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-7))*pow(2\,7)[b6c]; [b7]crop=iw/10:ih:(iw/10)*7:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-8))*pow(2\,8)[b7c]; [b8]crop=iw/10:ih:(iw/10)*8:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-9))*pow(2\,9)[b8c]; [b9]crop=iw/10:ih:(iw/10)*9:0,lut=c0=pow(2\,10-1):c1=pow(2\,10-1):c2=pow(2\,10-1):c0=bitand(val\,pow(2\,10-10))*pow(2\,10)[b9c]; [b0c][b1c][b2c][b3c][b4c][b5c][b6c][b7c][b8c][b9c]hstack=10,format=yuv444p,drawgrid=w=iw/10:h=ih:t=2:[email protected][z3];[z3][y1]scale2ref[y3][y1];[x4]format=yuv422p10le,vectorscope=i=0.1:mode=3:envelope=0:colorspace=1:graticule=green:flags=name,pad=ih*1.48148:ih:(ow-iw)/2:(oh-ih)/2[z4];[z4][y1]scale2ref[y4][y1];[y1][y2][y3][y4]xstack=fill=slategray:inputs=4:layout=0_0|w0_0|0_h0|w0_h0|0_h0+h1|w0_h0+h1,format=rgb24"

valbok

On iOS devices, rendering of videotoolbox decoded frames stops after 30000 frames.

25

Qt 6.4.3 and Qt 6.5.2, on iOS devices, real devices: Decoding works fine, decoded frames are AV_PIX_FMT_VIDEOTOOLBOX. When sending to display using videoSink->setVideoFrame(), they are redeclared (not converted) to NV12...

geminixdev

How to render frames from h264_mediacodec directly, without conversion, accelerated?

44

In #273 you explain the process between decoding and rendering clearly: > Let me explain how "everything" works: > > ffmpeg decodes a source using hardware acceleration and puts data...

geminixdev

valbok

Falha ao compilar o qtavplayer no QT 6.7.2

1

Ocorre um erro ao compilar o QtAVPlayer no Qt 6.7.1 ``` /qcine/utils/QtAVPlayer/qavvideoframe.cpp:232:13: error: ‘quint64 PlanarVideoBuffer::textureHandle(int) const’ marked ‘override’, but does not override 232 | quint64 textureHandle(int plane) const override |...

mxnt10

When looking through qtmultimedia changes update below hints for possible differences with Ffmpeg 7 in hw accelerated decoding and rendering: https://codereview.qt-project.org/c/qt/qtmultimedia/+/560858 > Old FFmpeg versions expose supported hw formats in...

geminixdev