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View Full Version : MP3's audio out of sync?


Kraise
13th February 2009, 08:20
Hey, I just created a H264 video with AAC right and checked the audio compared to the original wave, it was spot on exact. So I uploaded it to youtube and the sync seemed a little off, so I downloaded the video from youtube and viewed the audio in vegas and it was different from the original.... so I thought I'd give MP3 a try and see if youtube desyncs that, but it seems EVERY mp3 encode I do changes, no matter what I use :S

http://img10.imageshack.us/my.php?image=02132009021857sk9.jpg

Wave in middle, MP3 on top, mp3 try 2 on bottom (I used lame mp3 encoder through megui there, before I had tried the mp3s in vegas and in CDex)

Is this what MP3s just do? Btw, that MP3-Wave audio wave comparision is exactly what the uploaded youtubes audio looked like when compared with original AAC file...


anyway, I don't even need MP3, just a way to upload to youtube WITHOUT them desyncing my audio lol

tebasuna51
13th February 2009, 14:26
Is a know issue about decoders.

Try using lame like decoder:

lame sample.wav sample.mp3
lame --decode sample.mp3 sample2.wav

Compare now sample.wav and sample2.wav