The VideoLAN Forums

Posted: **03 Apr 2011 23:45**

Hi.

VLC 1.1.8 windows xp

I have a mp4 file where codec Details is as follows:

Stram 0
 Type: Sound
 Codec: MPEG AAC Audio (mp4a)
 Language: English
 Channels: Stereo
 Sample rate: 48000 Hz
Stream 1
 Type: Videp
 Codec: H264 - MPEG-4 AVC (part 10) (avc1)
 Language: English
 Resolution: 640x480
 Frame rate: 29.970029

This is a video file that I wish to email. So I want to get it smaller.

It works fine as long as I set "keep audio". But any attempt to reduce to a specific bit rate lead to a output file that has no audio.

I've also tried to use another containerformat as output (and differend mixes of container/video/audio formats), but still no sound.

Any idea what I can do to not loose sound while reduce it's quality?

Posted: **26 Apr 2011 17:16**

Bump...

Still no idea what it can be?

By the way. Not every input file get VLC behaving this way.

Also another thing I didn't mentioned (probably not important) is that source file was created by Sony Vegas 9.0.

Posted: **26 Apr 2011 19:56**

You should give us more details about each step you are doing, post a messages log and also a short sample file.

Posted: **08 Nov 2012 19:22**

Hi.

Sorry to forget about this.

I figured it out (I think) by setting the mp3 rate to a number that is a multiple of 16 (128, 256, etc).

Because the time that has past, I cannot be sure that it's the same problem this is the solution of

The VideoLAN Forums

Convert mp4 file to smaller - No sound

Convert mp4 file to smaller - No sound

Re: Convert mp4 file to smaller - No sound

Re: Convert mp4 file to smaller - No sound

Re: Convert mp4 file to smaller - No sound