#11548: Extra keyframe when encoding with x264
-------------------------------------+-------------------------------------
Reporter: David | Type: defect
Johansen |
Status: new | Priority: normal
Component: avformat | Version: 7.1
Keywords: | Blocked By:
force_key_frames |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
How to reproduce:
{{{
./ffmpeg -i repeated_keyframe.mp4 -c:v libx264 -force_key_frames source -f
hls index.m3u8
}}}
It appears that the problem is that in `X264_frame` of `libx264.c` on
`ctx->frame_num` of 318 the value `pic_out.b_keyframe` is `1` and it
already was on 316. I tried adding `no-scenecut=1` and `min-keyint` but
neither of those changed the output, and you can see that the second entry
in `index.m3u8` is a very short duration (`#EXTINF:0.040000`) and this is
an extra segments since there should only be two in `index.m3u8`
I tried outputting to a `.mp4` which I assumed would reproduce the same
issue, but it does not, so something is behaving different with the
specific use of the `hls` output.
Using this video as an example:
https://drive.google.com/file/d/1oaK-
G7jMdOk2Qt3yOXPvF8E7W8NuhtGv/view?usp=sharing
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11548>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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