#4000: mpeg4: Magenta color shift in first GOP
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Reporter: | Owner:
ErikCJohansson | Status: closed
Type: defect | Component:
Priority: normal | undetermined
Version: unspecified | Resolution: invalid
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
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Changes (by michael):
* status: new => closed
* resolution: => invalid
* reproduced: 0 => 1
Comment:
MPEG* is lossy compression, the magenta is the result of that in this
case.
you can use a higher bitrate like with -b 10M -rc_init_cplx 1000 or force
a lower quantizer to avoid this. There are also probably a few other
options. It affects just the first frames because the rate control code
lacks information at the begin and thus makes different decissions
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Ticket URL: <https://trac.ffmpeg.org/ticket/4000#comment:8>
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