[FFmpeg-trac] #6478(undetermined:new): Intel QSV: H.264 level is ignored
FFmpeg
trac at avcodec.org
Thu Jun 22 01:14:00 EEST 2017
#6478: Intel QSV: H.264 level is ignored
-------------------------------------+-------------------------------------
Reporter: alexpigment | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: intel, qsv, | Blocked By:
level, h264_qsv, h.264 | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
For the h264_qsv encoder, specifying an H.264 level is quietly accepted
(no errors or warnings) but not honored. Instead, the level is always
automatically assigned.
Using Staxrip as a comparison, the Intel H.264 encoder does appear to
support user-specified levels.
How to reproduce:
{{{
% ffmpeg -f lavfi -i smptebars -c:v h264_qsv -s 1920x1080 -aspect 16:9
-profile:v high -r 29.97 -t 5 -look_ahead 0 -level 4.1 output.mp4
}}}
See that the resulting video is reported as Level 4 in MediaInfo rather
than Level 4.1.
ffmpeg version N-86330-gbd1179e
built on 2017-06-01
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6478>
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