Author Topic: Opus track invisible in MKV  (Read 153 times)

Blues

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Opus track invisible in MKV
« on: October 17, 2018, 11:20:16 AM »
Code: [Select]
matroska_reader: The CodecID for track 1 is 'A_OPUS', but the private codec data does not contain valid headers.
This is what I get from mkvtoolnix when I try to open a file encoded by Avidemux.

eumagga0x2a

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Re: Opus track invisible in MKV
« Reply #1 on: October 17, 2018, 11:53:45 AM »
WFM with Avidemux from the current git master and mkvtoolnix 25.0.0. Please specify steps to reproduce.

Blues

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Re: Opus track invisible in MKV
« Reply #2 on: October 17, 2018, 03:43:47 PM »
Loaded file to Avidemux (git a few days ago), video to copy, audio to Opus bitrate 96, container MKV. Resulting file plays in MPV, but when loaded to mkvtoolnix-23.0 GUI [to add subtitles] there is no audio track. Getting the mentioned error instead. You think the mkvtoolnix is too old?

eumagga0x2a

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Re: Opus track invisible in MKV
« Reply #3 on: October 17, 2018, 04:07:58 PM »
Well, I tested with bitrate set to 128 kbit/s, but I doubt this would matter.

Quote
You think the mkvtoolnix is too old?

It may depend on the opus version on your system as well. I use v1.3.

Actually, mkvtoolnix has such a high pace of development that trying a build from the git head looks reasonable.
« Last Edit: October 17, 2018, 04:16:27 PM by eumagga0x2a »

Blues

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Re: Opus track invisible in MKV
« Reply #4 on: October 18, 2018, 03:39:07 AM »
OK, thanks. At least I know now where to look.