Problem joining (concatenating) avi's in virtualdub

[uart]

Hi I'm trying to concatenate several video clips but I'm having no luck so far.

The clips are flv files but I've downloaded a plug-in to let virtualdub open them and save them to avi (with no reprocessing).

The problem is that every time I try to "append AVI segment" it fails with the error message that the files are a different frame rates. The differences however are only miniscule like 30.00000 versus 30.00002 fps. Is there any work around that doesn't involve re-encoding the files?

Thanks.

[filmboss80]

If you're starting with .flv files and ending up with .avi files, what makes you think there will be no reprocessing? And, as a side note, can't you just use the words "link" or "join" instead of "concatenate?" Some of the people who read these forums have English as a second language. Let's use more common words, huh?

[manono]

Is there any work around that doesn't involve re-encoding the files?

Open the one, set Video for Direct Stream Copy and go Video->Frame Rate ->Change To 30 Frames Per Second. Save it and with luck you should then be able to join to the other one (unless the audio bitrates also differ). With Direct Stream Copy set, no reencoding will be done.

[redwudz]

If you are converting the files from FLV to some sort of AVI, you are re-encoding anyway. VD wants them all the same specs, so you would likely have to encode each separately and join them after conversion. I know this may be a PITA if you have a lot of small files, but I know of no simple workaround, at least with VD.

Most times with a bunch of files, there are only a few with different specs and you convert them separately, then batch or append the ones that are the same. Then copy and paste in the ones that were out of spec using 'Direct stream copy' mode.

You might look into a AVISynth script to batch convert the framerate before feeding them to VD. But someone with more AVIsynth experience would have to assist you with that.

FLV was designed as a end format, and not really made for editing.

EDIT: It looks like manono may have a better solution. 8)

[uart]

Hi all, let me assure you that I'm not re-encoding the files. It's just wrapping the video/audio content already contained in the flv file in a avi container. The conversion take less than one second for a 10 minute clip ok.

Thanks for the tip manono I'll give that a try. Actually it was one of the first things I thought of but didn't bother because I didn't hold much chance of it working. My understanding is that the fame rate wont change unless re-processing is selected. Anyway I'll give it a try.

[test12321]

And, as a side note, can't you just use the words "link" or "join" instead of "concatenate?" Some of the people who read these forums have English as a second language. Let's use more common words, huh?

Well, I have English as a second language and I found this thread only because it contains the word "concatenate". Naturally I searched for "virtual dub concatenate" with g**gle...
It was a first hit + contains the solution - please don't spread bad habits...

[t0nee1]

I googled "concatenate", but ," g**gle "