[FFmpeg-trac] #11381(undetermined:new): ffmpeg has started outputting yuvj420p not yuv420p

[FFmpeg]

#11381: ffmpeg has started outputting yuvj420p not yuv420p
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             Reporter:  ghjk987      |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by ghjk987):

 This option is mentioned in the ffmpeg documentation here:
 https://trac.ffmpeg.org/wiki/Encode/H.264#Encodingfordumbplayers

 It's been in use for this purpose since at least 2012, so people may have
 become accustomed to the old behaviour, as I was. It's not about quality,
 just multi platform compatibility, and using the recommended video format
 to achieve that. I was always perfectly happy with not specifying any
 pix_fmt and leaving it at yuvj422p but various people would complain they
 couldn't play my videos when I emailed them to illustrate something!
 yuv420p solved it, but I don't know what hw/sw they were using. But
 perhaps the documentation needs updating instead, I shall leave that to
 the ffmpeg developers to decide, your additional flag solves my problem,
 thank you.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11381#comment:2>
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