Sync new audio stream to video

Roalush · 14th March 2014, 11:04

I want to add second audio stream to video from another video.

video 1: mp4 x264 AAC audio
video 2:Avi Xvid MP3 audio (audio taken from it)

The way I tried to sync the audio was by opening both videos with Avidemux and measure the difference of timestamps between identical I-frames and set the exact delay.
I was surprised to find out the new audio was not in sync (constant delay) by quite a big margin.

Can anyone think of a reason?
Maybe an original delay resets when I apply the new delay?

14th March 2014, 11:04	#1 \| Link
Roalush Registered User Join Date: Aug 2011 Posts: 2	Sync new audio stream to video I want to add second audio stream to video from another video. video 1: mp4 x264 AAC audio video 2:Avi Xvid MP3 audio (audio taken from it) The way I tried to sync the audio was by opening both videos with Avidemux and measure the difference of timestamps between identical I-frames and set the exact delay. I was surprised to find out the new audio was not in sync (constant delay) by quite a big margin. Can anyone think of a reason? Maybe an original delay resets when I apply the new delay?

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