[FFmpeg-trac] #4441(avfilter:closed): support HDCD

FFmpeg trac at avcodec.org
Sun Jul 10 19:53:45 CEST 2016

#4441: support HDCD
             Reporter:  calestyo     |                    Owner:
                 Type:  enhancement  |                   Status:  closed
             Priority:  wish         |                Component:  avfilter
              Version:  git-master   |               Resolution:  fixed
             Keywords:  hdcd         |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |

Comment (by bp0):

 There may be other filters in the chain, one would have to step through
 the input and output format of each filter and encoder that comes after
 the HDCD filter to see if it will be truncated. I'd guess that is

 While it certainly would be nice to automatically detect HDCD in the input
 stream, in ffprobe for example, I'm not sure it would be a good idea to
 automatically add the filter. All the information that is known about HDCD
 is from reverse engineering, and there seem to be some yet-unknown extra
 features of HDCD that are not implemented. IMO, it would better to tell
 the user that HDCD is detected and let them enable the filter when they

Ticket URL: <https://trac.ffmpeg.org/ticket/4441#comment:31>
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