Merging avis with different compression

[ramin]

Hi all

I have couple of clips that I want to join, and all of them are Xvid but with different quality and compressions. is it possible to merge all these as one? (I uses VirtualDub but didn't do it)

any help please?

[andyp1]

No you can't join clips that have different specs.
To join them the specs have to be identical.

What do you want to do with the clips in the end ?

[teegee420]

What I've done in the past is convert all the clips to mpegs with the same specs, then join the mpegs. You could always convert back to avi if needed. This method obviously takes a while but it works.

Another thing I've done is change all the avi's to the same frame rate, then save as video only(no sound), then merge all to one avi. Then you have to decompress all of the clips audio to wav then join to a single wav, then use the time warp effect in Goldwave to make sure the audio duration matches the video, save as your desired compression and mux with the video.

This all sounds like fun, huh?

[ramin]

hi guys

thanks alot teegee I think the first way is eeasier and also faster than the 2nd. tnx again

[deadpac]

@ramin

A much easier way with a much more difficult program. 8)

Just combine all of them using one AVISynth Script; open in Vdub and save as new AVI. All within the script you just have to make sure that they have the same framerate, audio rate, and frame height and width; and if they don't make them with simple AVISynth commands/calls and if needed filters. But for something as simple as general splicing of video all of the functions are contained within AVISynth.

Almost no one that hasn't already played around with and LIKES AVISynth never chooses this route. This route is one script and no need to do something like extract audio and edit..... blah

Bunch of AVI's -> Bunch of MPG's -> One MPG -> One AVI

Unless you use VERY high bitrate Mpeg2 and you know how to"properly" splice together mpeg2 files without losing sync; you're probability of something going wrong somewhere in that chain of conversions is slightly higher than...

If you just stick with AVI -> FrameServed AVI -> One AVI
then there's a less of a chance of losing the original AVI's qualities.

If you want AVI then just stick with AVI don't try to use mpg as a middle man. More likely than not there is going to be some quality loss during the mpg conversion especially if going back to XviD from mpeg2 (which came from XviD).

That is one ugly chain, but that's just IMHO. To each his own do whatever you feel will be the easiest for you.