The currently implementation of WmfMedia player initialization is incorrect in that it creates a playback topology that includes all source tracks, but some of them are disabled. The intent was to enable/disable these tracks on the presentation descriptor on demand at run-time, but this is not supported by WMF. The topology must be re-created each time tracks are switched, and with only the active tracks contained in the topology.
1) Try to open a media file with multiple tracks, i.e. \\Z2448\Share\Media Files\Tests\Audio2Tracks.mp4
Note that the media fails to open with an error message about the presentation descriptor not being initialized correctly.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-35383 in the post.
| 0 |
| Component | Media Framework |
|---|---|
| Affects Versions | 4.13 |
| Target Fix | 4.14 |
| Created | Aug 31, 2016 |
|---|---|
| Resolved | Sep 9, 2016 |
| Updated | May 2, 2018 |