On 5/3/11 8:55 PM, Uri Okrent wrote:
Hey guys, based on this:
http://webcache.googleusercontent.com/search?q=cache:uP_EPJI98igJ:lists.mplayerhq.hu/pipermail/ffmpeg-devel/2007-October/036474.html+ffmpeg+png+compression&cd=1&hl=en&ct=clnk&gl=us&source=www.google.com
it seems there is some way to set the compression level when using
pngenc (-vcodec png). I can't seem to figure out how to do it though. I
tried -compression_level, but that doesn't seem to be doing what I
expect. It has an effect on the result but its always far larger than
the source.
compression_level should do what you expect.
My source is 84 frames of uncompressed tiffs which are 222 MB in size
altogether. With compression level 0 my mov file is 534 MB, and with
level 9 it is 275 MB. In either case it's much larger than the
uncompressed frames! Something not right...
Maybe the tiffs aren't uncompressed and maybe our zlib settings aren't
exactly optimal. Please first make 100% sure the tiffs aren't deflated
as well.
lu
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