[FFmpeg-devel] [PATCH] avformat/hlsenc: actual segment file size and duration in segment filenames

Bodecs Bela bodecsb at vivanet.hu
Mon Jan 2 20:58:11 EET 2017


Dear All,

this patch makes it possible to put actual segment file size (measured
in bytes) and/or duration (calculated in microseconds) into segment
filenames. This feature is useful when post-processing live streaming
access log files. New behaviour works only when -use_localtime option
is set and second_level_segment_size or/and
second_level_segment_duration new hls_flags are specified. %%s is the
placeholder for size and %%t for duration in hls_segment_filename
option. Fix sized trailing zeropadding also works eg. %%09s or %%023t.

A command to test new features:
./ffmpeg -loglevel info -y -f lavfi -i color=c=red:size=640x480:r=25 -f
lavfi -i sine=f=440:b=4:r=44100 -c:v mpeg2video -g 25 -acodec aac
-cutoff 20000 -ac 2 -ar 44100 -ab 192k -f hls -hls_time 3 -hls_list_size
5 -hls_flags
second_level_segment_index+second_level_segment_size+second_level_segment_duration
-use_localtime 1 -use_localtime_mkdir 1 -hls_segment_filename
"segment_%Y%m%d%H%M%S_%%04d_%%08s_%%013t.ts" stream.m3u8

this will produce segments like this:
segment_20170102194334_0003_00122200_0000003000000.ts
segment_20170102194334_0004_00120072_0000003000000.ts
etc.


thank you in advance,

Bela Bodecs
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-avformat-hlsenc-size-and-duration-in-segment-filenam.patch
Type: text/x-patch
Size: 12670 bytes
Desc: not available
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20170102/a7f7a821/attachment.bin>


More information about the ffmpeg-devel mailing list