[FFmpeg-trac] #3657(swscale:new): 32 Bit per Channel sws conversion

FFmpeg trac at avcodec.org
Sat May 24 16:58:22 CEST 2014

#3657: 32 Bit per Channel sws conversion
             Reporter:  sun          |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  swscale
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |

Comment (by Cigaes):

 When people request float values for pixels (or samples), I always wonder
 if they really need the features of floats, i.e. more absolute accuracy
 for numbers near 0. It may make sense for samples, to keep the same
 relative accuracy regardless of the overall volume. For pixels, maybe
 issues with gamma will need more accuracy near 0, but I am not really

 Apart from that, I wonder if people realize that 32-bits fixed point is
 more accurate than floats on 99.21875% of the range.

Ticket URL: <https://trac.ffmpeg.org/ticket/3657#comment:5>
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