WMV audio delay?

linyx · 30th October 2008, 01:12

I am trying to convert some wmv files to x264, but i keep getting screwed up audio. When i run a script like this through VDub, it works fine, but if i encode audio and video separately, then it is out of sync.

Code:

DirectShowSource("C:\Source.WMV", audio=true, convertfps=true, fps=30.000)

I need to use something other than VDub though because x264 quit using VFW a while ago, and i still use x264+belight for encoding. So my question is, how can you find the audio delay in wmv, if that is what it is?

BTW - These are from http://civil-protection.blogspot.com/ so they shouldn't violate rule #6.

Any help is appreciated.
Thanks!

poisondeathray · 30th October 2008, 02:18

Are you using the same script for audio? or using the .wmv directly as input? I find if I feed the same script into (BeHappy or MeGUI), it's in sync for .wmv files

Another approach: If you are sure it's a constant sync issue (same lengths for audio/video), just figure out the delay after in a media player (usually +/-) and enter it for mp4box or mkvmerge to "fix" it.

linyx · 30th October 2008, 02:36

cool, didnt know megui would accept a file like that for audio, i was demuxing the audio and that was what didn't work for the sync issue. Thanks!

30th October 2008, 01:12	#1 \| Link
linyx Un-Registered User Join Date: Mar 2008 Location: Audio Stream - 0x80 Posts: 341	WMV audio delay? I am trying to convert some wmv files to x264, but i keep getting screwed up audio. When i run a script like this through VDub, it works fine, but if i encode audio and video separately, then it is out of sync. Code: DirectShowSource("C:\Source.WMV", audio=true, convertfps=true, fps=30.000) I need to use something other than VDub though because x264 quit using VFW a while ago, and i still use x264+belight for encoding. So my question is, how can you find the audio delay in wmv, if that is what it is? BTW - These are from http://civil-protection.blogspot.com/ so they shouldn't violate rule #6. Any help is appreciated. Thanks!

30th October 2008, 02:18	#2 \| Link
poisondeathray Registered User Join Date: Sep 2007 Posts: 5,377	Are you using the same script for audio? or using the .wmv directly as input? I find if I feed the same script into (BeHappy or MeGUI), it's in sync for .wmv files Another approach: If you are sure it's a constant sync issue (same lengths for audio/video), just figure out the delay after in a media player (usually +/-) and enter it for mp4box or mkvmerge to "fix" it.

30th October 2008, 02:36	#3 \| Link
linyx Un-Registered User Join Date: Mar 2008 Location: Audio Stream - 0x80 Posts: 341	cool, didnt know megui would accept a file like that for audio, i was demuxing the audio and that was what didn't work for the sync issue. Thanks!