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FORMAT/CODEC quicktime (animation RLE) to mpeg-2 loss of quality?

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kerrie nessa
FORMAT/CODEC quicktime (animation RLE) to mpeg-2 loss of quality?
on May 6, 2010 at 6:17:38 am

hi

i have a problem. i got some quicktime clips with animation(RLE) codec, and i have to put them together and export them as a mpeg-2(4:2:0 ITU-709) for broadcast (PAL 720x576 interlaced 16:9) in germany.

my question:

1. will i have quality loss? if i export the QT to the MPEG-2 ?
2 if yes, would it be a lot? or minimal, so it won't matter for
broadcast?
3. shull i ask for the quicktime clips as uncompressed? to then export them as MPEG-2?

hope you can help!!! :)

btw: how do i know if i should use upper or lower frame??? in this case, when i export?


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Dave LaRonde
Re: FORMAT/CODEC quicktime (animation RLE) to mpeg-2 loss of quality?
on May 6, 2010 at 3:22:18 pm

I would ask this question on the COW's Compression Techniques forum.

Many broadcasters use specialized, higher-bit-rate variants of MPEG2 -- much higher bit rates than used when producing a DVD, for example. You usually can't encode them without specialized software.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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kerrie nessa
Re: FORMAT/CODEC quicktime (animation RLE) to mpeg-2 loss of quality?
on May 6, 2010 at 3:33:48 pm

i have this software.

and it is for broadcast, not a dvd.


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Dave LaRonde
Re: FORMAT/CODEC quicktime (animation RLE) to mpeg-2 loss of quality?
on May 6, 2010 at 4:02:49 pm

Very well. In After effects, you should render either a lossless or uncompressed file. Since you didn't say, and since I work on a Mac, I would choose to render a Quicktime movie using either the Animation or PNG codecs. If you're on Windows, try a lossless AVI. If the footage in your comp contains interlaced footage, you should both interpret the footage and render as lower field first.

From that point, it's up to you and your skills using that conversion software for broadcast.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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