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VLC not playing audio
Posted: 14 Dec 2023 14:35
by cubelov
Downloaded videos from former "Twitter" (X) have no sound when viewed using VLC.
Re: VLC not playing audio
Posted: 14 Dec 2023 15:08
by InTheWings
To help you, we need
messages, to completely understand what your problems is.
To fix this, please be sure
before you start the playback to:
- Open: Tools -> Messages.
- Set Verbosity to 2
- Start playback to reproduce your issue
- Save text in a file or copy into clipboard
- Then paste the full resulting log here between [code]and[/code] (or use Pastebin.com if it's too long)
Also don't forget to name your
Operating System and provide the
VLC media player version.
Re: VLC not playing audio
Posted: 14 Dec 2023 15:58
by cubelov
Operating System:
Windows 11 Home
version: 23H2
64-bit operating system
VLC Media Player version 3.0.20 Vetinari
Link to pastebin:
https://pastebin.com/DS0ivvyP
Re: VLC not playing audio
Posted: 14 Dec 2023 16:27
by Lotesdelere
A sample file is available in this thread:
https://forum.videolan.org/viewtopic.php?f=14&t=163699
and yes, I can reproduce the issue while it's playing fine with other players including FFplay.
Re: VLC not playing audio
Posted: 15 Dec 2023 02:59
by Gruko
I have no problem to play the sample file with VLC 3.0.20 Vetinari 64 bit, Win11 23H2
Re: VLC not playing audio
Posted: 15 Dec 2023 19:31
by 5Laser
I have no problem to play the sample file with VLC 3.0.20 Vetinari 64 bit, Win11 23H2
Thats weird. Are you using default vlc settings?
I have added another twitter file with issues in my original thread. Could you see if it also plays normally for you?
https://forum.videolan.org/viewtopic.ph ... 18#p541618
Re: VLC not playing audio
Posted: 16 Dec 2023 15:59
by Lotesdelere
Maybe because of this:
Code: Select all
mp4 debug: unrecognized major media specification (iso5).
If I simply remux the file with FFmpeg I'm getting this:
Code: Select all
Codec ID : isom (isom/iso2/avc1/mp41)
and then it's playing fine with VLC.
Re: VLC not playing audio
Posted: 18 Dec 2023 11:44
by InTheWings
Typical "I don't give a f*** about the MP4 specs"
The audio is not interleaved in the fragmented MP4, but only arrives in the LATEST fragment.
That shouldn't be playable.
Re: VLC not playing audio
Posted: 18 Dec 2023 11:57
by Lotesdelere
The audio is not interleaved in the fragmented MP4, but only arrives in the LATEST fragment.
That shouldn't be playable.
Well, as a matter of fact it's playable with any other player I've tried, including FFplay which is not throwing any error message at all:
Code: Select all
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\Temp\Samples\Jaguar hunting-t=163699.mp4':
Metadata:
major_brand : iso5
minor_version : 512
compatible_brands: iso6mp41
Duration: 00:01:43.23, start: 0.000000, bitrate: 1365 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1280x720, 1232 kb/s, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 2400k tbn (default)
Metadata:
handler_name : Twitter-vork muxer
vendor_id : [0][0][0][0]
Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : Twitter-vork muxer
vendor_id : [0][0][0][0]
15.69 A-V: -0.023 fd= 0 aq= 16KB vq= 218KB sq= 0B f=0/0
Re: VLC not playing audio
Posted: 19 Dec 2023 13:12
by 5Laser
Exactly.
How do all other players or even browsers play those files without any issues?