Mixing multiple videos

[kropotkin]

I have an old copy, quite bad encoded of a personal footage. This footage is encoded at 29.xxx fps, 320x240 , with no deinterlace performed (and was needed), with divx4 low motion, and looks quite crappy, as you might imagine. However, i was able to save the original movie source (16mm vhs c tape), except for the first 5 minutes. So i recaptured the whole thing, and i want to mix the first 5 min of the crappy movie with the second, good qulity part. However, this part was captured at PAL fps, and i cannot change that. I tried a inverse telecine with virtualdub on the first part, but i get sound out of sync, and 24 fps, which i think doesn't match with 25fps of the PAL.
What do you suggest for mixing the videos? Can i transform the PAL movie in NTSC? I don't really care for the extra frames.

[Dr Mordrid]

What editor are you using? MSPro, VideoStudio, Premiere??

Dr. Mordrid

[kropotkin]

well, i'm using virtualdub and sonic foundry vega video 3. I know, not the best option, but this is what i have. If really need i could use a "cracked" premiere, but i rather don't.

[Dr Mordrid]

Ok...so I have it right; which clip is in which format/codec/resolution? Keep it simple, I was up late last night :-P

Dr. Mordrid

[kropotkin]

ok i'll try! Sorry for the delay of my answer.
Clip 1: 29 fps NTSC 320x240, video: divx4 low motion, sound: frauhofer mp3 ~ 128kbps, length 5 min
Clip 2: 25 fps PAL 704x480 (i think ... NTSC full) Picvideo MJPG 19 quality setting, uncompressed sound, 40 min length.
The join order is, of course, CLIP1 ,CLIP2.

[Dr Mordrid]

One of the issues with this mix is that one file is using temporal compression (I frames + synthetic frames); DivX, while the other is using all I frames.

I'd convert the DivX to PICVideo @quality 20 & PCM audio before joining them so that you minimize processing losses later on.

As for frame rate/size you state that clip2 is PAL at 704x480...but PAL is 704x576. Which is it?

Presuming you want to convert #1 to #2's format changing it to an I frame format like PICVideo should make doing an inverse telecine go smoother.

Dr. Mordrid

[kropotkin]

Well this is a good idea, if the inverse telecine goes okay in picvideo, because the main issue was the first clip sync and framrate. I'll try this option. You were rihgt, in fact i ment 704x576, and PAL ... Thanks for your help, i'm going to work right now!

[kropotkin]

Update: you were (of course ) right with the inverse telecine. However, now i have a 23.9756 fps first part, in good audio sync, (after inverse telecine) and a 25 fps second part, the original PAL. And the "append avi segment" still doesn't work because the segments's fps does not match. How can i get them the the same fps? There is any way to convert the 25 fps part, or at least a telecine on the PAL version?