| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0021568 | MMW 5 | Codecs | public | 2025-04-03 19:22 | 2025-04-13 12:48 |
| Reporter | peke | Assigned To | |||
| Priority | high | Severity | major | Reproducibility | always |
| Status | assigned | Resolution | open | ||
| Target Version | 2026 | ||||
| Summary | 0021568: VVC/H266 4K files crashes MM | ||||
| Description | Playback of VVC/H266 4K files crashes MM With and without Codec Pack. After that all VVC/H266 do not play if user clicks Continue in Crash Dialog. I sent LOGID 4E550000 using Sample files downloaded from below. Sample files can be located at https://www.elecard.com/videos Sample comparison Video https://www.youtube.com/watch?v=Ii1NTZ_riUk | ||||
| Tags | No tags attached. | ||||
| Fixed in build | |||||
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Cannot reproduce, for me it works with our codec pack. Please generate debug log and probably also new crashlog. |
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There is no crash in MM, just decoder from your system is not able to decode the video properly, it is very demanding format. I do not see what we can do with this. |
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I updated K-Lite Codec Pack and will test further, but in any case MM should gracefully and silently not crash but continue working. It is Strange as my ATi Radeon RX 6750 XT should handle it with ease. EDIT: Still same issues with latest K-Lite Codec Pack |
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I do not see any way how to fix it, it is problem with format+codec+drivers, not in MM. |
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Do you reproduce crash in MM? Last time it did not crash, so debug log did not show anything, it simply played video. |
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Yes, I can reproduce crash in MM and MPC-BE 1.6.9 every time, only depends how many times video tries to play before it shows that dialog following Crashlog id 4E550000. I also tried VLC and no issues. Graph Studio next uses system installed format+codec+drivers which should be same as MM and it does not fail. Even this is not MM issue expected behavior would be that MM gray that track and report reason in toast + debug log. This now looks like file is corrupted Re 0021568:0078611: MM did not played Video it skipped playback as it can be seen on my video recording. bug21568.jpg (196,838 bytes) |
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You still did not attach debug log with crash. The crashlogs showed, that it crashed during saving settings (relation to any playback is unclear), no idea why, hopefully debug will show more. Also please try to uninstall kLite and test with our codec pack only. |
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Here is log file showing MM can't play it without codec pack then after installing codec pack 4k Do not play 1080p play normally. No crashes atm, but tracks are still not grayed as non playable. |
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I need debug log from crash, this log simply shows, that video was played... Btw. support for VVC is still experimental in LAV Filters, added several months ago, so it really can be unstable. I can do nothing with it, I do not have sources to develop own decoder. So still do not see anything I can do. |
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4K Files are not played and like I said it does not crash anymore after several codecs (both k-Lite and MM codec) reinstallations, but also do not gray them. Do you see it in log and in Video ~0078606 (4k is skipped after first frame and others play whole 10s) If I read logs correctly there are errors on decodin for 4k while for 1080p there is no issue. As for experimental that we agree on, but that do not explain why all other apps play 4k Normally. Lastly resize on load to fit Window is different issue, but not urgent. |
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There is no error in decoding 4k, only it is very slow and reports completed state soon instead of playing, probably because of this. Decreasing priority, as I do not see anything now how to improve it on our side and I cannot reproduce your behavior at all, for me it plays, only very slowly. |
