Details
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Bug
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Resolution: Unresolved
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P2: Important
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None
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6.7.3
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Qt Version: 6.7.3
Device: Toradex Apalis iMX8QM
OS: Boot2Qt 6.7.3
Qt Creator version: Qt creator 14.0.2
Host Computer: macOS version 13.6
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Other
Description
Description: When deploying the Qt Multimedia examples (both Media Player and Camera) on the Toradex Apalis iMX8QM, video rendering and camera capture performance are very slow. It seems that VPU hardware acceleration is not being utilized, leading to high latency and excessive dropped frames.
Steps to Reproduce:
- Deploy the Qt Multimedia Media Player and Camera examples on the Toradex Apalis iMX8QM (Boot2Qt 6.7.3).
- Attempt to play a video or start the camera preview.
- Observe the performance and console log output.
Error Logs:
Could not change state of "playerPipeline" to PAUSED ASYNC qt.multimedia.player: Unable to set the pipeline to the paused state. Could not change state of "playerPipeline" to PLAYING ASYNC Could not open kernel file: /tmp/g2d_opencl_kernel.bin buildBinarySize = 59327 ====== AIUR: 4.7.2 build on Sep 1 2022 09:49:28. ====== Core: MPEG4PARSER_06.20.10 build on Oct 19 2022 08:20:52 file: /usr/lib/imx-mm/parser/lib_mp4_parser_arm_elinux.so.3.2 Track 00 [video_0] Enabled Duration: 0:00:19.033333000 Language: eng Mime: video/x-h264, parsed=(boolean)true, alignment=(string)au, stream-format=(string)avc, width=(int)1920, height=(int)1080, framerate=(fraction)60/1, codec_data=(buffer)014d402affe10015674d402a95900780227e5c04400000fa000075302101000468eb8f20 ====== V4L2DEC: 1.20.3 build on Sep 15 2022 02:27:06. ====== qt.multimedia.player: Warning: A lot of buffers are being dropped. (../git/libs/gst/base/gstbasesink.c(3143): gst_base_sink_is_too_late (): /GstPipeline:playerPipeline/GstBin:videoOutput/GstBin:videoSinkBin/QGstVideoRendererSink:qgstvideorenderersink1: There may be a timestamping problem, or this computer is too slow.)
Environment:
Qt Version: 6.7.3
Device: Toradex Apalis iMX8QM
OS: Boot2Qt 6.7.3
Qt Creator version: Qt creator 14.0.2
Host Computer: macOS version 13.6
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