Opened 22 months ago
Last modified 22 months ago
#10098 new defect
ffmpeg ignores -hls_time if -hls_init_time is set
Reported by: | brunoais | Owned by: | |
---|---|---|---|
Priority: | normal | Component: | avformat |
Version: | git-master | Keywords: | hls |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
If you try to remux an mp4 file and you provide both -hls_time
and -hls_init_time
with different values, apparently -hls_time
is ignored.
How to reproduce:
% ffmpeg -i "video.mp4" -f hls -start_number 0 -hls_list_size 0 -hls_playlist 1 -hls_init_time 10 -hls_time 60 -strftime 1 -hls_flags second_level_segment_index -hls_segment_filename '%%03d.ts' -c copy -copyts -hls_playlist_type vod out.m3u8 ffmpeg version 5.1.1-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2022 the FFmpeg developers built with gcc 8 (Debian 8.3.0-6) configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
With my ~2:11:10 file:
If I use -hls_init_time 60
and -hls_time 60
, it produces up to Opening '153.ts' for writing
If I use -hls_init_time 10
and -hls_time 60
, it produces up to Opening '981.ts' for writing
I'd expect the first one to produce 153 files and the 2nd to produce 154 or 155 files.
Change History (5)
follow-up: 3 comment:2 by , 22 months ago
Replying to Steven Liu:
hls_init_time should be used in -hls_list_size > 0
https://patchwork.ffmpeg.org/project/ffmpeg/patch/20221209043736.29531-1-lq@chinaffmpeg.org/
Try this patch please.
Thank you very much for such fast reply!
If I don't change any options, with this, hls_init_time is being ignored.
Should documentation be changed to clarify for non-native english speakers? If so I just don't use this option and take the performance optimization loss.
OR
Would it be feasible to change ffmpeg to support this option when -hls_list_size
is 0?
follow-up: 4 comment:3 by , 22 months ago
Replying to brunoais:
Replying to Steven Liu:
hls_init_time should be used in -hls_list_size > 0
https://patchwork.ffmpeg.org/project/ffmpeg/patch/20221209043736.29531-1-lq@chinaffmpeg.org/
Try this patch please.
Thank you very much for such fast reply!
If I don't change any options, with this, hls_init_time is being ignored.
Should documentation be changed to clarify for non-native english speakers? If so I just don't use this option and take the performance optimization loss.
OR
Would it be feasible to change ffmpeg to support this option when
-hls_list_size
is 0?
The above patch is used for fix the problem.
comment:4 by , 22 months ago
Replying to Steven Liu:
The above patch is used for fix the problem.
Your answer is ambiguous to me. So I need clarification.
Do you mean:
- The above patch is to provide support for a different length for the first file using
hls_init_time
, even when running with-hls_list_size 0
and-hls_playlist_type vod
? - Don't let
hls_init_time
overridehls_time
?
It achieved the 2nd one, not the first one.
comment:5 by , 22 months ago
Component: | undetermined → avformat |
---|---|
Keywords: | hls added |
Version: | unspecified → git-master |
hls_init_time should be used in -hls_list_size > 0
https://patchwork.ffmpeg.org/project/ffmpeg/patch/20221209043736.29531-1-lq@chinaffmpeg.org/
Try this patch please.