No sound on a video with AV1 - Opus

[dhelidhumrul]

I can play the same file with audio on MPC-HC. It is an Mkv file with AV1 codec and Opus (@256 kbps VBR, 48000Hz , 5.1).
On Vlc, video plays fine but there is no sound. On statistics tab it shows decoded block numbers but played number is 0.
On Windows 11 23H2, latest VLC version.

[dhelidhumrul]

More file details: Video: AV01 1440x1080 23.976fps [V: Neon Genesis Evangelion E01 - 1080p AV1 (av1 main, yuv420p10le, 1440x1080) [default]]
Audio: Opus 48000Hz 6ch 9216kbps [A: Japanese 5.1 (Opus @ 256 kbps VBR) [jpn] (opus, 48000 Hz, 5.1) [default]]
Audio: Opus 48000Hz 6ch 9216kbps [A: English 5.1 (Opus @ 256 kbps VBR) [eng] (opus, 48000 Hz, 5.1)]
Audio: Opus 48000Hz stereo 3072kbps [A: Spanish - Latin American 2.0 (Opus @ 128 kbps VBR) [spa] (opus, 48000 Hz, stereo)]
Audio: Opus 48000Hz stereo 3072kbps [A: French 2.0 (Opus @ 128 kbps VBR) [fre] (opus, 48000 Hz, stereo)]
Audio: Opus 48000Hz stereo 3072kbps [A: German 2.0 (Opus @ 128 kbps VBR) [ger] (opus, 48000 Hz, stereo)]

none of the audio options have any sound

[dhelidhumrul]

"sample" https://upload.disroot.org/r/YG7wbFRX#u ... 6RHTtPRRw=

[Lotesdelere]

Code: Select all

mkv debug: | | + Track Entry mkv debug: | | | + Track Number=2 mkv debug: | | | + Track UID=fb80e822 mkv debug: | | | + Track Type=audio mkv debug: | | | + Track CodecId=A_OPUS mkv debug: | | | + Track Seek Preroll =80000 mkv debug: | | | + Track CodecPrivate size=27 mkv debug: | | | + Track Language=`jpn' mkv debug: | | | + Unknown (LanguageIETF) mkv debug: | | | + Track Name=Japanese 5.1 (Opus @ 256 kbps VBR) mkv debug: | | | + Track Codec Delay =6500 mkv debug: | | | + Track Audio mkv debug: | | | | + afreq=48000 mkv debug: | | | | + achan=6 mkv debug: | | | | + abits=32 mkv debug: | | + Track Entry mkv debug: | | | + Track Number=3 mkv debug: | | | + Track UID=91cf6ba1 mkv debug: | | | + Track Type=audio mkv debug: | | | + Track Default=0 mkv debug: | | | + Track CodecId=A_OPUS mkv debug: | | | + Track Seek Preroll =80000 mkv debug: | | | + Track CodecPrivate size=27 mkv debug: | | | + Unknown (LanguageIETF) mkv debug: | | | + Track Name=English 5.1 (Opus @ 256 kbps VBR) mkv debug: | | | + Track Codec Delay =6500 mkv debug: | | | + Track Audio mkv debug: | | | | + afreq=48000 mkv debug: | | | | + achan=6 mkv debug: | | | | + abits=32 mkv debug: | | + Track Entry mkv debug: | | | + Track Number=4 mkv debug: | | | + Track UID=e8921c1e mkv debug: | | | + Track Type=audio mkv debug: | | | + Track Default=0 mkv debug: | | | + Track CodecId=A_OPUS mkv debug: | | | + Track Seek Preroll =80000 mkv debug: | | | + Track CodecPrivate size=23 mkv debug: | | | + Track Language=`spa' mkv debug: | | | + Unknown (LanguageIETF) mkv debug: | | | + Track Name=Spanish - Latin American 2.0 (Opus @ 128 kbps VBR) mkv debug: | | | + Track Codec Delay =6500 mkv debug: | | | + Track Audio mkv debug: | | | | + afreq=48000 mkv debug: | | | | + achan=2 mkv debug: | | | | + abits=32 mkv debug: | | + Track Entry mkv debug: | | | + Track Number=5 mkv debug: | | | + Track UID=46bc4a51 mkv debug: | | | + Track Type=audio mkv debug: | | | + Track Default=0 mkv debug: | | | + Track CodecId=A_OPUS mkv debug: | | | + Track Seek Preroll =80000 mkv debug: | | | + Track CodecPrivate size=23 mkv debug: | | | + Track Language=`fre' mkv debug: | | | + Unknown (LanguageIETF) mkv debug: | | | + Track Name=French 2.0 (Opus @ 128 kbps VBR) mkv debug: | | | + Track Codec Delay =6500 mkv debug: | | | + Track Audio mkv debug: | | | | + afreq=48000 mkv debug: | | | | + achan=2 mkv debug: | | | | + abits=32 mkv debug: | | + Track Entry mkv debug: | | | + Track Number=6 mkv debug: | | | + Track UID=52a9b25a mkv debug: | | | + Track Type=audio mkv debug: | | | + Track Default=0 mkv debug: | | | + Track CodecId=A_OPUS mkv debug: | | | + Track Seek Preroll =80000 mkv debug: | | | + Track CodecPrivate size=23 mkv debug: | | | + Track Language=`ger' mkv debug: | | | + Unknown (LanguageIETF) mkv debug: | | | + Track Name=German 2.0 (Opus @ 128 kbps VBR) mkv debug: | | | + Track Codec Delay =6500 mkv debug: | | | + Track Audio mkv debug: | | | | + afreq=48000 mkv debug: | | | | + achan=2 mkv debug: | | | | + abits=32 ... opus error: cannot read Opus header opus error: initial Opus header is corrupted opus error: cannot read Opus header opus error: initial Opus header is corrupted

Same report about OPUS audio in MKV as the one from this thread:
https://forum.videolan.org/viewtopic.php?f=14&t=164761

But your file is playing fine wih other players, including FFplay.

You should create a new report ticket on the VLC issues tracker with your above report, the link to your sample file and the link to this thread:
https://code.videolan.org/videolan/vlc/-/issues

If possible, because of this:
https://forum.videolan.org/viewtopic.ph ... 27#p538427

[dhelidhumrul]

looks like the same problem with this one https://code.videolan.org/videolan/vlc/-/issues/28671

[dhelidhumrul]

https://www.reddit.com/r/VLC/comments/1 ... ?context=3

looks like issue has been seen by VLC staff