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Help with MPEG 2 Cropping
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scottd710
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12. December 2005 @ 20:51 _ Link to this message    Send private message to this user   
I need to crop down 4:3 tv musical performances.
I record them off air in MPEG2 and i want to keep them that way.
However i dont want the black bars either side and neither do i want the junk running along the top that you get with 4:3 broadcasts on the hi def off air channels.
I have been shown various bits of software that allow you to crop like gordian knot but nothing so far allows you to just use one program and keep the mpeg2 intact without converting it to another format.
Does anyone know a simple way for me to do this without having to convert these files and risk losing quality swapping from mpeg2 to avs and then back again.
If you do please help..
Cause im at a loss.
What im looking to do is just archive some nice musical performances from tv shows and make dvds with them.
easy enough to do with the hi def stuff but not so easy with the sd stuff when you want to remove those damn black bar...
Staff Member

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14. December 2005 @ 10:31 _ Link to this message    Send private message to this user   
You can't crop an MPEG-2 file without re-encoding, but I don't think you understand which steps are going to cause quality loss. The AVS file isn't an actual video file - it's just a script used to read the file into other programs (frameserve) using AviSynth. Depending on what program you use to re-encode, AviSynth may lose a little quality (if you have to convert from MPEG's native YV12 colorspace to YUY2 for your encoder) but it doesn't re-encode.

Rich Fiscus
@Vurbal on Twitter
AfterDawn Staff Writer

This message has been edited since posting. Last time this message was edited on 14. December 2005 @ 10:31

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