diff options
Diffstat (limited to 'DOCS/tech/snow.txt')
| -rw-r--r-- | DOCS/tech/snow.txt | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/DOCS/tech/snow.txt b/DOCS/tech/snow.txt index 33fbb8996e..eb9a90592a 100644 --- a/DOCS/tech/snow.txt +++ b/DOCS/tech/snow.txt @@ -20,8 +20,8 @@ OPTIONS RECOGNIZED BY SNOW Note that 0 may not be specified; if you want lossless encoding, you must leave out vqscale. - * vpass=<1|2> - Activates internal two pass mode. + * vpass=<1-3> + Activates internal two (or more) pass mode. * vbitrate=<value> Specify bitrate of the 2nd pass. @@ -37,10 +37,12 @@ OPTIONS RECOGNIZED BY SNOW You can add 256 to any of the options to enable chroma motion estimation for that comparison (e.g. mbcmp=257 for SSD with chroma), but it doesn't seem to help much for the moment. + NOTE: 9/7 wavelet doesn't work with lossless mode. * pred=<0-2> Wavelet type. 0 (9/7 wavelet), 1 (5/3 wavelet), 2 (13/7 wavelet). 9/7 is probably better for for lossy coding, and 5/3 for lossless. + NOTE: 9/7 wavelet doesn't work with lossless mode. * last_pred=<0-3> Tries a few extra predicted motion vectors before doing EPZS search, |