joining 2 avi files in ffmpegX - Problem

[nepgunes]

I am having a problem joining 2 avi files with ffmpegX. The result i get each time is the 2nd avi isnt fully joined with the first part. Only a part of the 2nd avi is joined.

- the first avi file is 1:05:42
- the 2nd avi file is 1:02:33
- when i used ffmpegx to join them, the result was an avi with a length of 1:40:44

i tried 3 times and was unsuccesful each time. Does anyone have any suggestions as to why its doing this?
thanks for any help.

[ionblue]

Try using Mpeg Streamclip to join the clips and than use ffmpegX if needed on encode. I've had the same problem in the past.

[alexmaso]

Try D-Vision3 it is the one that is giving me less problems with the audio sync

[CodFather]

Yes - I've definitely seen this as well. The resultant joined file, if played in Quicktime will cut off at about 90% of the expected duration. Curiously the file plays fine in VLC though. The mighty VLC triumphs again.

A bit of a pain as I've had to resort to using VirtualDub to join my AVIs on my rusty old PC.

[station]

A similar problem I'm having is that the audio in the second clip is slightly off (about 1/2 second) when they are joined. The audio is perfectly synced until I reach the part of the new file where the second original clip was.