Audio partly out of sync after joining avis

[Clueless]

Hello,

Can you please help me out?

I joined two avi files together with VirtualDub. After joining the sound of the SECOND (appended) half of the new created avi is out of sync. In the first part it is (still) fine.

I read about fixing audio sync problems in the guide, so I tried to do the Frame Rate Conversion thing, but after that the whole avi became out of sync.

I am sure i did not find the right way yet. Can you give me a clue please? Btw, the audio comes before the video.

Thank you very much:

[setarip]

Hopefully, you still have the two ORIGINAL.AVI files. If so, BEFORE joining them, do the following:

1) Open VirtualDub

2) Set both "Video" and "Audio" to "Direct Stream Copying"

3) Load the SECOND .AVI

4) From the "Audio" dropdown menu, select "Interleaving"

5) Enter an appropriate number in the "Audio skew correction" box (This make take some experimentation to get "just right"

6) Save this modified version with a new filename

7) Close VirtualDub and then restart it (Cautionary)

8) Load the ORIGINAL first file and append the MODIFIED second file

Let us know of your success ;>}

[aLu]

What's wrong with VirtualDub?

I'm (theoretically) astounded to read setarips's reply how to properly join audio in a rather "simple" and "user-friendly" program like VirtualDub... clueless didn't write anything that the SECOND AVI audio was out of sync at all before joining ...! I've had the same problem in various situations. It seems to be just taking chances, it may work out correctly or may not. The normal thing for me is to encode to MJPEG/ PCM, append all the segments and have (just) the video rendered to DivX over night - anything else usually costs too much time and attention! Only after the video is ready, I convert the audio. This is no guarantee for the perfect audio sync, but it seems to worsen things if you cut anything out of your video AFTER appending the whole thing (to "make ends meet" smoothly) OR compress video and audio at the same time (great if it worked ...), even if just 1 segment is processed.

*****Hey, anybody who feels like a VirtualDub programmer! Such problems shouldn't be normal. VirtualDub is great, but tell me one program that fixes this issue and I'll kick it off my screen forever (... *****