#7202: mjpeg compression creates laggy video
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Reporter: jsteinkamp | Owner:
Type: defect | Status: closed
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: | Resolution:
Blocking: | needs_more_info
Analyzed by developer: 0 | Blocked By:
| Reproduced by developer: 0
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Comment (by jsteinkamp):
HI I have figured out the issue: ffmpeg compresses Photo JPEG with
yuvj444p 24 bit by default. This compression does not play well on any
computers since it uses software to decode. yuvj420p plays much better
since it is 16 bit. Older Adobe After Effects compresses yuvj420p when you
select medium compression, of course they do not explain any of this. I
realize Photo JPEG is an older file format, but i really need it because
the blacks are blacker and it searches well for realtime looping. I still
believe there is a bit of a lag, when I sync 3 projections using photoJPG
files, the files created in After Effects run better than files made in
ffmpeg. The main draw back for using After Effects is it takes much longer
to make the movie and they stopped supporting this format.
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Ticket URL: <https://trac.ffmpeg.org/ticket/7202#comment:12>
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