There isnt audio on MP4 files

[Cyrax]

There is something to do?

[DJ]

There is something to do?

Ya! Give more information.

MP4 is a container. So what's inside the container?

Stream and Media Information -> Advanced can provide this. Post is here!

[Cyrax]

As you wish:

[DJ]

The audio "samr" is not supported. I believe this is a part of 3gpp and is also not supported.

You are welcome to try Feature Requests

[tHILAK]

I am also having the same problem of video but no audio...

here are the details abt the file



THese are the following appearing in the messages..


main warning: timing screwed, stopping resampling
main warning: audio drift is too big (-127980), clearing out
main warning: mixer start isn't output start (-59904)
main warning: buffer is 42667 in advance, triggering downsampling
main warning: timing screwed, stopping resampling
main warning: audio drift is too big (-127980), clearing out
main warning: mixer start isn't output start (-59904)
main warning: buffer is 42667 in advance, triggering downsampling
main warning: timing screwed, stopping resampling
main warning: audio drift is too big (-127980), clearing out
main warning: mixer start isn't output start (-59904)
main warning: buffer is 42667 in advance, triggering downsampling
main warning: timing screwed, stopping resampling
main warning: audio drift is too big (-127980), clearing out
main warning: mixer start isn't output start (-59904)
main warning: buffer is 42667 in advance, triggering downsampling
main warning: timing screwed, stopping resampling
main warning: audio drift is too big (-127980), clearing out
main warning: mixer start isn't output start (-59904)
main warning: buffer is 42667 in advance, triggering downsampling
main warning: timing screwed, stopping resampling
main warning: output date isn't PTS date, requesting resampling (-48000)
main warning: audio drift is too big (-175980), clearing out
main warning: mixer start isn't output start (-78336)
main warning: buffer is 42667 in advance, triggering downsampling



The worst thing is that... when i try to jump to a particular scene the sound comes for a second and then goes again...

[DJ]

In your case the formats are supported, but messages I believe is trying to tell you that the audio timing is screwed. This can happen for a number of reasons.

1. The file is poorly encoded.

2. Your audio card is not controlling the video properly so as to provide sync for the video.

Are you having trouble with other file types?

If yes! Update the audio drivers.
If No! Try playing the file in another player.

Many other players have differing methods of trying to resolve the issue. This could leave you with audio that plays and either no video or very jerky video or perhaps it's just a complete inability to search within the file where it locks up the player. But again if you are not having problems with other files, the problem is most likely the file itself.

Now there is one other issue with H.264 (AVC) that is true for any player and I did not bring it up as being a real problem because of the resolution and the only reason I'm suggesting it now is because you don't say what your CPU is or what version of Windows or for that matter what version of VLC. But open your Task Manager and look at Performance. What is the CPU usage?

[Guest]

THanks for ur suggestion... till yesterday i was using 8.4 and after the post i saw the new version and downloaded it... it seems to be workin fine now...

[Guest]

I find that many people don't know their formats or containers and yet expect to play video on a computer with the most confusing number of them. H.264 (AVC) is new, the standard exists but it is not finished. Each new version takes this process a bit further and it is always best to stay current. When one creates a post and doesn't post enough information for anyone to make a rational response it either takes a very long time or the user becomes frustrated and angry.

Stop making others jump through hoops because of your inabilities to describe your problem and provide more information regarding your equipment and versions of software.

[Guest]

H.264 is standard. Encoders on other hand are not stable enough on many cases (or they use feature which decoders don't support, like interlacing).

[DJ]

Yes! H.264 is a standard as it has been ratified by the MPEG committee. But It is NOT finished and variations is at present causing problems between vendors and versions for both encoders and decoders for various reasons.