Changing from 720x480 to 640x480

[Really Ripped]

I have miroVIDEO DV 300 video saved on my harddrive that came directly from my JVC miniDV camcorder. Its current format is 720x480, 29.97fps.

QUESTION:
Is there a way in VDub where I can process the video to yield an output of 640x480 yet still keep the same decompressor, miroVIDEO DV 300???

My goal is to have a 640x480 final product.... but still have the same quality of video compression. I'm not interested if reprocessing the video thru a different codec means I'll get a much larger filesize. And on the other hand, I dont want to use a codec that will give me a smaller filesize and I LOOSE quality. In the end I just want the same type of video I have saved right now but in a 640x480 format.

Please reply in NOVICE terms as I'm limited in my knowledge of video.

Thanks! Kellie

[Belgabor]

You probably know that to resize the video you have to reencode it. To keep miroDV you need a codec that can compress to this format. Since I don't know about this and it seems to be more a topic for the DV forum I'll move this thread there.

Cheers
Belgabor

[Bodman]

Hi I have resised 480 x 480 to 720 x 576 using avisynth and CCE. I know you dont want to re encode the movie but as far as I can tell you will need to do this. the script i used was

LoadPlugin("C:\PROGRAM FILES\DVD-RIP\AVISYNTH\MPEG2DEC.DLL")
mpeg2source("d:\image\vobs\MYFILE.d2v")
BicubicResize(720,640)
crop(0,80,720,480)


I know this is not really a answer to your question but maybe this will get you the same result by using a different path.

//Bodman

[bb]

DV is specified for 720x480, but not for 640x480. So I guess you won't be able to re-compress your video to 640x480 through a DV codec.

I have no idea what you intend to do, but you may re-compress to your desired resolution using the Huffyuv codec without losing quality. The resulting file will be about twice as big.

bb

[midiguy]

what do you plan to do with this 640 x 480 DV file? is your intention just to playback this file with some media player with the proper aspect ratio? cause, you could do that right now.. any player should automatically resize your video to 4:3 on playback (meaning, 640 x 480).

[theReal]

what do you plan to do with this 640 x 480 DV file?

If you want the file to be smaller at about the same quality, then I'd try to re-encode it to MPEG2 or Divx 5.03, both mpeg2 and divx 5.03 can handle interlaced material.
For keeping the highest quality use a high VBR setting for mpeg2 and quality based 100% for Divx 5.03