geminixdev

Possible rare crash in avcodec_send_packet() ?

1

In general the player code runs for days without issues, no leak, no crash. However occasionally there is a crash, _freeing memory which was not allocated_, and it seems to...

QAVAudioOutput has crackling audio when there are other CPU intensive tasks running on the PC

16

Still on Windows, still with Qt 6.6.x, after zero copy rendering works so well now, here is the next area which possibly can get optimized: I notice that QAVAudioOutput has...

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...

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...

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...