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Force mencoder to use mod 16 resolution

sumpm1 posted 2008 Aug 25 04:43

Hi. I am using mencoder in linux to batch encode a bunch of videos to a lower resolution with the command line. I am using the command -vf scale -zoom -xy 512 (for example) to set the width of every encoded video to 512 (which is a multiple of 16 or mod 16). This command will automatically determine the correct vertical resolution for the video, but will not result in a mod 16 resolution. So far, these commands have been very handy so that I don't have to set the values for EVERY video, and the batch does the work for me. But I want the output to have a mod 16 vertical resolution. Is there any command that I can use in mencoder that will FORCE a mod 16 resolution? Thanks

disturbed1 posted 2008 Sep 13 17:00

I digging up some late replies today :D From man mencoder : scale[=w:h[:ilaced[:chr_drop[:par[:par2[:presize[:noup[:arnd]]]]]]]]               Scales the image with the software scaler (slow) and performs a YUV<->RGB  colorspace  conversion               (also see -sws).                  <w>,<h>                       scaled width/height (default: original width/height)                       NOTE:  If  -zoom is used, and underlying filters (including libvo) are incapable of scal-                       ing, it defaults to d_width/d_height!                           0:   scaled d_width/d_height                          -1:   original width/height                          -2:   Calculate w/h using the other dimension and the prescaled aspect ratio.                          -3:   Calculate w/h using the other dimension and the original aspect ratio.                          -(n+8): Like -n above, but rounding the dimension to the closest multiple of 16. --------------------------snipped for length------------------- read it yourself :D SO.... If you wanted to auto size to 512x$MOD16, try -vf scale=512:-11

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