[FFmpeg-trac] #9474(avformat:new): Incorrect value of #EXT-X-PROGRAM-DATE-TIME added in absence of the flag

FFmpeg trac at avcodec.org
Mon Oct 25 15:59:07 EEST 2021


#9474: Incorrect value of #EXT-X-PROGRAM-DATE-TIME added in absence of the flag
----------------------------------+--------------------------------------
             Reporter:  Yash      |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  git-master
             Keywords:  HLS       |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+--------------------------------------
 Summary of the bug:
 #EXT-X-PROGRAM-DATE-TIME tag gets added in parsing child playlist even if
 the child playlist is not created with program_date_time flag while using
 append_list HLS flag.

 How to reproduce:
 First command
 {{{
 % ffmpeg -loglevel debug -i BigBuckBunny.mp4 -ss 0 -t 30 -hls_list_size 0
 -hls_playlist_type event -hls_flags independent_segments -hls_segment_type
 fmp4 -hls_time 2 -master_pl_name master.m3u8 -map 0:v:0 -map 0:a:0 -c:v
 copy -c:a copy -var_stream_map "v:0,a:0,name:1080p" -f hls %v.m3u8
 ffmpeg version 4.4.git
 built on ...
 Ubuntu 20.04 5.11.0-38-generic
 }}}
 Second command
 {{{
 % ffmpeg -loglevel debug -i BigBuckBunny.mp4 -ss 0 -t 30 -hls_list_size 0
 -hls_playlist_type event -hls_flags independent_segments+append_list
 -hls_segment_type fmp4 -hls_time 2 -master_pl_name master.m3u8 -map 0:v:0
 -map 0:a:0 -c:v copy -c:a copy -var_stream_map "v:0,a:0,name:1080p" -f hls
 %v.m3u8
 ffmpeg version 4.4.git
 built on ...
 Ubuntu 20.04 5.11.0-38-generic
 }}}

 Output child playlist after the first command
 {{{
 #EXTM3U
 #EXT-X-VERSION:7
 #EXT-X-TARGETDURATION:2
 #EXT-X-MEDIA-SEQUENCE:0
 #EXT-X-PLAYLIST-TYPE:EVENT
 #EXT-X-INDEPENDENT-SEGMENTS
 #EXT-X-MAP:URI="init.mp4"
 #EXTINF:2.500000,
 1080p0.m4s
 #EXTINF:2.500000,
 1080p1.m4s
 #EXTINF:2.500000,
 1080p2.m4s
 #EXTINF:2.500000,
 1080p3.m4s
 #EXTINF:1.916667,
 1080p4.m4s
 #EXTINF:2.500000,
 1080p5.m4s
 #EXTINF:1.375000,
 1080p6.m4s
 #EXTINF:2.500000,
 1080p7.m4s
 #EXTINF:2.500000,
 1080p8.m4s
 #EXTINF:2.291667,
 1080p9.m4s
 #EXTINF:2.500000,
 1080p10.m4s
 #EXTINF:2.500000,
 1080p11.m4s
 #EXTINF:1.916667,
 1080p12.m4s
 #EXT-X-ENDLIST
 }}}

 Output child playlist after the second command
 {{{
 #EXTM3U
 #EXT-X-VERSION:7
 #EXT-X-TARGETDURATION:2
 #EXT-X-MEDIA-SEQUENCE:0
 #EXT-X-PLAYLIST-TYPE:EVENT
 #EXT-X-INDEPENDENT-SEGMENTS
 #EXT-X-MAP:URI="init.mp4"
 #EXTINF:2.500000,
 1080p0.m4s
 #EXTINF:2.500000,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:02.500+0530
 1080p1.m4s
 #EXTINF:2.500000,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:05.000+0530
 1080p2.m4s
 #EXTINF:2.500000,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:07.500+0530
 1080p3.m4s
 #EXTINF:1.916667,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:10.000+0530
 1080p4.m4s
 #EXTINF:2.500000,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:11.917+0530
 1080p5.m4s
 #EXTINF:1.375000,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:14.417+0530
 1080p6.m4s
 #EXTINF:2.500000,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:15.792+0530
 1080p7.m4s
 #EXTINF:2.500000,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:18.292+0530
 1080p8.m4s
 #EXTINF:2.291667,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:20.792+0530
 1080p9.m4s
 #EXTINF:2.500000,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:23.083+0530
 1080p10.m4s
 #EXTINF:2.500000,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:25.583+0530
 1080p11.m4s
 #EXTINF:1.916667,
 #EXT-X-PROGRAM-DATE-TIME:1970-01-01T05:30:28.083+0530
 1080p12.m4s
 #EXT-X-DISCONTINUITY
 #EXTINF:2.500000,
 1080p13.m4s
 #EXTINF:2.500000,
 1080p14.m4s
 #EXTINF:2.500000,
 1080p15.m4s
 #EXTINF:2.500000,
 1080p16.m4s
 #EXTINF:1.916667,
 1080p17.m4s
 #EXTINF:2.500000,
 1080p18.m4s
 #EXTINF:1.375000,
 1080p19.m4s
 #EXTINF:2.500000,
 1080p20.m4s
 #EXTINF:2.500000,
 1080p21.m4s
 #EXTINF:2.291667,
 1080p22.m4s
 #EXTINF:2.500000,
 1080p23.m4s
 #EXTINF:2.500000,
 1080p24.m4s
 #EXTINF:1.916667,
 1080p25.m4s
 #EXT-X-ENDLIST
 }}}

 Video:[http://commondatastorage.googleapis.com/gtv-videos-
 bucket/sample/BigBuckBunny.mp4]
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9474>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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