Opus in mkv

[igracia]

I've got a Opus track encoded with GStreamer matroskamux v1.8.1.1 that's not playable. However, when this track is transcoded with

Code: Select all

ffmpeg -i in.mka -c:a copy out.mka

it works.

Should I open a bug or is there anything that we could do to check where VLC is choking on the original track? We've been checking the logs, but haven't found any errors that could lead to VLC not playing the track.

[Lotesdelere]

Please open Tools -> Messages (set Verbosity to 2) before you start the playback, and then paste the full resulting log here or on Pastebin.com if it's too long.

Also upload a short sample of a problematic file to either Zippyshare.com (200 MB max) or to EmbedUpload.com, the latter will upload the file for you to several other hosts (use the default ones) and then post the link to the file here.

If needed cut it with DGsplit and read here about how to do it:
viewtopic.php?f=14&t=57724&p=193335#p193335
50 MB max should be enough.

[igracia]

Looks like it's a two-sided issue, and there are two open bugs to track them.

• GStreamer generating something that VLC chokes on, not using matroskamux SimpleBlocks with Opus: https://bugzilla.gnome.org/show_bug.cgi?id=784969
• VLC not handling handle Matroska/WebM with Opus using normal Blocks/BlockGroups instead of SimpleBlocks: https://trac.videolan.org/vlc/ticket/18545