2018-01-24 1:14 GMT+01:00 Chris Hiszpanski <[email protected]>: > Hello, > > I am using the HLS plugin, which is generating a .m3u8 playlist and its > corresponding MPEG-2 transport stream segments: > > I'm noticing that if I leave this running for multiple days, the datetime in > `EXT-X-PROGRAM-DATE-TIME` drifts from the actual clock time of the system, > readily apparent because the segments are named in `YYYY_mm_DD__HH_MM_SS.ts` > format (the .ts names match the system `date`). Here is how I am running > ffmpeg (`ffmpeg version 3.4.1-static https://johnvansickle.com/ffmpeg/`): > > ffmpeg -re -r 36 -f h264 -i /var/run/my_named_pipe.h264 -vcodec copy -an > -r 36 -use_localtime 1 -f hls -flags +cgop -g 25 -hls_time 6 -hls_list_size 5 > -hls_start_number_source datetime -hls_allow_cache 1 -hls_flags > program_date_time -hls_segment_filename > http://localhost/%Y_%m_%d__%H_%M_%S.ts -method PUT > http://localhost/myfeed.m3u8 > > My hardware generates a 36 frames-per-second h.264 byte stream (baseline > profile, with 25 frame group-of-pictures) and writes it to a named pipe, from > which ffmpeg reads. Here is the m3u8 that shows the issue: > > ```m3u8 > #EXT-X-VERSION:3 > #EXT-X-MEDIA-SEQUENCE:0 > #EXT-X-TARGETDURATION:7 > #EXT-X-PROGRAM-DATE-TIME:2018-01-23T15:03:35-08:00 > #EXTINF:6.250, > 2018_01_23__15_04_33.ts > #EXT-X-PROGRAM-DATE-TIME:2018-01-23T15:03:41.25-08:00 > #EXTINF:6.250, > 2018_01_23__15_04_39.ts > #EXT-X-PROGRAM-DATE-TIME:2018-01-23T15:03:47.5-08:00 > ... > ``` > > Notice how the datetimes differ by almost a minute. These were the same value > some 24 hours ago. > > Is this a bug, or am I missing something?
Complete, uncut console output missing but since you are overwriting input timestamps, I don't think the report is valid. (How likely is it that your hardware provides *exactly* 36fps?) Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
