Necessary to re-render cropped MPEGS?

fultro wrote on 6/24/2004, 6:01 PM
I would like to make simple crops and splits of mpegs that are already DVD compliant. Is there any way to save the shortened clips without having to recompress through the rendering process. Primarily I want to do this to save image quality and also possibly save rendering time. I realize I could pre-render to a larger AVI.but I would like to avoid this step.

Thanks -- fultro

Comments

TheHappyFriar wrote on 6/24/2004, 6:40 PM
You have to use a different program. TMPGenc would to this(has a several day triel too that's free for mpeg-2)
fultro wrote on 6/24/2004, 6:52 PM
Many thanks - have heard of this program - will give it a try
fultro
B_JM wrote on 6/24/2004, 8:51 PM
if you crop a mpeg -- you will have to render it no mater what ... there is NO other choice ...

if you edit a mpeg - as in cuts and such .. you CAN do it without re-rendering but not with tmpgenc .... which re-renders everything ..


you can do this in premiere with the main concept mpeg plug in or a program like mpeg2vcr

jaegersing wrote on 6/24/2004, 9:56 PM
"if you edit a mpeg - as in cuts and such .. you CAN do it without re-rendering but not with tmpgenc .... which re-renders everything .."

Tmpgenc has some Video Tools which include a utility for cutting and joining clips without re-rendering. It works great, as long as all the clips to be joined are the same format (resolution, frame rate etc).

I'm not sure if tmpgenc can do cropping, but if so, I think it would need to re-render.

Richard Hunter
akbar56 wrote on 6/24/2004, 10:37 PM
Ive been using tmpg to do basic cutting of my mpgs for years.

I can assure you that you can cut ends or pieces out of mpgs with it with no re-rendering.

cropping will require a re-render.