[libav-tools] pngenc compression level
lu_zero at gentoo.org
Wed May 4 04:41:07 CEST 2011
On 5/3/11 8:55 PM, Uri Okrent wrote:
> Hey guys, based on this:
> 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
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