View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0014454 | MMW v4 | Codec | public | 2017-10-12 00:04 | 2017-10-22 00:14 |
| Reporter | peke | Assigned To | |||
| Priority | immediate | Severity | major | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| Target Version | 4.1.19 | Fixed in Version | 4.1.19 | ||
| Summary | 0014454: MP4: AC3 Audio Stream in MP4 fail to play | ||||
| Description | Some MP4 Files fail to play correct Audio. User supplied sample file that is wrapped in Mp4 container. MMW LAV Audio decoder can't decode input format and just bitstream output Green Highlights on Picture. All other apps detect file correctly and LAV Audio decoder works Red Highlights on Picture. Sample file cam be downloaded from Ticket? | ||||
| Steps To Reproduce | 1. Play sample file in MMW 2. Open LAV Audio Decoder settings from Tray (Blue Icon With LAV) 3. Go to Formats Tab 4. Disable decoding of AC3 and EAC3 5. Press Apply and then OK. 6. Play some other file to refresh codec table 7. Play affected file again and it should play | ||||
| Additional Information | VKV-750-89795 | ||||
| Tags | No tags attached. | ||||
| Attached Files | |||||
| Fixed in build | 1855 | ||||
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There is problem with MPEG2 stream in MP4, it is quite rare and we cannot detect it (it has the same mp4v codec in the header like MPEG4(xvid) videos). I am looking for some solution how to detect this. Anyway, MPEG2 decoder is not present in the codec pack due to expensive licensing. |
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Another problem is, when audio decoder has set AC3/DTS as "bitstreamed", currently we do not support this and it will corrupt audio. Our resampler DS filter should bypass such bitstreams and do not touch them. |
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Wrong MPEG video stream format detection fixed in build 1855. |
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Problem with corrupted audio when AC3 bitstream used fixed in build 1855. Our resampler (needed e.g. for equalizer function) do not accept such bitsreams now. |
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Verified 1856 |
