logo Sign In

Sync sound problem with Virtual Dub

Author
Date
Author
Time
Post link
I'm trying to join to clips togther, both clips seperately are in synch, when joined they are not. Now Clip A is from a different source as Clip B. Clip A has has video from one source that I created and audio from a different source, the clip is NTSC, Clip B is originaly from an PAL source and I slowed down both the audio and video in Virtual Dub to make it so. Can anyone help me?

Blade Runner: The Complete Collection

Author
Time
Post link
Maybe the audio from clip A is not as long as the video and when you join the second clip the audio from clip B shifts to close the gap???
Fez: I am so excited about Star Whores.
Hyde: Fezzy, man, it's Star Wars.
Author
Time
Post link
I think that makes sense in that IF the audio is off by so much as part of a second it can through the whole thing off. I was able to sych the joined clips using a delay in Virtual Dub but again after saving it and then playing it on just a avi player, BS player for example it was out of synch.

Blade Runner: The Complete Collection

Author
Time
Post link
So IN virtualdub the audio is in sync? And after saving the whole thing as an avi it's out of sync?
I don't know... sorry.
Fez: I am so excited about Star Whores.
Hyde: Fezzy, man, it's Star Wars.
Author
Time
Post link
Something to try:

1. Load Clip A into VirtualDub. Check the length of the video. Save the audio as WAV.

2. Open the WAV in an audio editor (sound forge, cool edit, audacity, etc). Check length of audio. Add silence if necessary so the audio is exactly the same length as Clip A's video.

3. Repeat steps 1 and 2 with Clip B.

4. Open WAV A in audio editor and add WAV B; save out full length audio A+B.

5. Open Clip A in VDub, append Clip B. Change audio from source to WAV, and select the file saved in step 4.

6. Select direct stream copy for video and whatever compression options required for audio, and save out new AVI.

Guidelines for post content and general behaviour: read announcement here

Max. allowable image sizes in signatures: reminder here

Author
Time
Post link
Sounds like a good idea. I'm going to try it now. I just wanted to say before I do that I think the framerate of clip A and clip B maybe slightly different. or perhaps the audio framerate is different, either way let me try this and see what happens.

Blade Runner: The Complete Collection