Re: Testing with lossless codecs
Re: Testing with lossless codecs
- Subject: Re: Testing with lossless codecs
- From: Piers Goodhew <email@hidden>
- Date: Mon, 3 Aug 2009 16:01:03 +1000
There's also "None" and a quite a few with "Uncompressed" in their
name as well (if you regard 4:2:2 as not lossy). Gets complicated by
your initial colourspace: Animation and None are 8-bit RGB, so any
other kind of image in will still experience some loss. I think
"Component Video" is uncompressed 4:2:2 YUV, if it's still around.
Some of the old QuickTime "Ice floe" newsletters would cover the older
codecs in some detail ...
PG
On 03/08/2009, at 1:55 PM, Darrin Cardani wrote:
On Aug 2, 2009, at 3:44 PM, Brian Gardner wrote:
I am doing a little plugin testing and realized that
I should probably be doing my tests with a lossless QT codec
on my input.
Is there a list of the (mathematically) lossless QT codecs that
ship with the pro apps (FCP, Motion, QuickTime Pro, etc) ?
I'm not sure if there's a list. Here are a few I know of:
Animation
TIFF (may depend on settings)
TGA
Lossless
There may be others. Most people use Animation for an actual
lossless codec. I'm not sure what you're specifically testing, but
I've found that lossy codecs today are much less lossy than they
used to be. It may or may not make a difference for you. Some
testing still requires actual lossless encoding.
Darrin
--
Darrin Cardani
email@hidden
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