Opened 4 years ago
Last modified 4 years ago
#8912 new defect
libx264: profiles "main"/"high" ignored when "-preset ultrafast" is specified
| Reported by: | XXLuigiMario | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | undetermined |
| Version: | 4.2 | Keywords: | |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description
When using -preset ultrafast, the profile of the encoded file will always become "constrained baseline" even if "-profile:v main" or "-profile:v high" are specified. This does not apply to "-profile:v high444".
How to reproduce?
ffmpeg -i test.mkv -c:v libx264 -preset ultrafast -profile:v high -pix_fmt yuv420p out.mkv
Attachments (1)
Change History (2)
by , 4 years ago
| Attachment: | ffmpeg-20200929-050702.log added |
|---|
comment:1 by , 4 years ago
This very well can be intentional. Main/High profile needs more computing power than baseline, so if you want ultrafast encoding, it makes sense to use a constrainted profile.
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