AVI resize

[benson881]

I have an avi in Xvid format. it is 624x352 and I am wanting to make it Xvid 608x336 anyone know how to do this?

[steveryan]

Virtualdub, load video, hit video tab/filters/add/resize/ok set the desired size. Save as AVI or frameserve to an MPEG encoder.

[benson881]

Will this reencode the entire avi?

[junkmalle]

Will this reencode the entire avi?

Yes. But why are you shrinking the video by that tiny amount? If you're having trouble with subtitles on TV that won't help.

[benson881]

I am trying to encode 4 tv episodes onto 1 dvd I use Totalfilmmachine which will only accept video that is the same. 3 of my avis are 608x336 and the problem 1 is as above. Is it possible not to reencode it? If not how do I keep the same quality of video. ie what setting do i put in virtualdub (xvid encoder) when encoding to xvid. (file is too big uncompressed)

Cheers Jim

[junkmalle]

I see. No, you cannot resize the frame without reencoding the video if you want to save it to a file.

I don't know Totalfilmmachine but you might be able to frameserve to it -- that way the original video would be decompressed and sent directly to Totalfilmmachine one frame at a time (with no compression). You could also use AVISynth to resize and frameserve. AVISynth would be faster and slightly better quality because it can work entirely in the YUV colorspace.

If you want to use an XVID AVI file as an intermediate, put XVid into single pass mode and use Target Quantizer. A Quantizer value of 2 will get you a file that looks nearly identical to the source without the size getting too large. 1 will be even better but the file will be larger.

[benson881]

Hi there did as you said and the the video file was fine apart from the audio got out of sync any ideas?

[junkmalle]

Hi there did as you said and the the video file was fine apart from the audio got out of sync any ideas?

I'm going to guess you created a new AVI file:

You probably have variable bitrate mp3 audio in your source. In VirtualDub turn on Audio -> Full Processing Mode. That will give you uncompressed PCM audio in your new AVI file. The file will be larger but probably a bearable size.

If the audio is still out of sync we'll go on to the next step.

[benson881]

Im just enoding again with uncompressed audio. I think I have tried this and it works. I then uncompressed another episode which worked fine. But 2 of them vitrualdub didn't recognise audio compressor (TAG: 0055 MP3/ISO audio) so I was then stuck with 2 video uncompressed audio and 2 as above. Typical.......right size picture different audio

[mats.hogberg]

Firs, I'd use an application that don't require all source files to have the same resolution. It's just plain silly.
If you still want to use TFC, and TFC is fine with the audio part, in your source files even if it doesn't like its resolution, use direct stream copy for audio. That way VirtualDub won't try to process it.
But you will lose video quality in this process, unless you go for uncompressed video, which creates huge files. Onlu bitrate rule is "the higher the better" - there's no trying to match source/dest bitrates some seem to figure...

/Mats