View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0014067 | MMW v4 | Codec | public | 2017-03-05 02:58 | 2017-03-20 19:40 |
| Reporter | peke | Assigned To | |||
| Priority | immediate | Severity | minor | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| Target Version | 4.1.16 | Fixed in Version | 4.1.16 | ||
| Summary | 0014067: Audio Codec FOURCC A52 is associated with AC3 correctly | ||||
| Description | 1. Some video files can contain multiple Audio streams and recent found Audio Codec FOURCC A52 is not listed nor recognized as alternative AC3 which lead to issues with sync even file is actually supported. A52 should be added in list codecs so that Device profile can be set to support that format. 2. If you play file in MMW adn change stream to A52 MMW just plays like noise. Other video players play them. | ||||
| Steps To Reproduce | For testing Video sample file from bug 0014066 uploaded to FTP | ||||
| Tags | No tags attached. | ||||
| Fixed in build | 1831 | ||||
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The problem is not caused by AC3/A52 codec, I have another video with 2 audio streams, one is AC3/A52 too, and playback works as expected. There is probably something inside this specific audio stream. Will analyze it more. I think A52 with BSID8 is standard AC3 format, so it is included in stream type "AC3". MM correctly recognized this stream type as AC3. |
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So the problem is in audio switching from AAC to (any) AC3 stream. MP3 with AC3 works, switching from AC3 to AAC works, playing the same video with the same AC3 stream (when AAC stream is removed) works. The only problematic is the stream change from AAC to AC3. It is resolved by installing our codec pack, so the exact behavior is dependent on installed codecs. Problematic combination is e.g. Microsoft AAC Decoder with our resampler filter, if both are used, then the problem occurs when switching audio stream. |
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Fixed in build 1831. There was bug in our DirectShow filter, which caused video playback/video conversion crash or problems in some very specific cases, like in this. |
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Verified 1831 |
