[FFmpeg-trac] #9527(ffmpeg:new): process freezes rtsp remux hls (cur_dts is invalid st:0 )

[FFmpeg]

#9527: process freezes rtsp remux hls (cur_dts is invalid st:0 )
-------------------------------------+-------------------------------------
             Reporter:  Eugene       |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:  ffmpeg       |                  Version:  git-
             Keywords:  rtsp remux   |  master
  hls                                |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 I park streams from ip cameras over rtsp and remux them to hls.
 I have several cameras from which ffmpeg cannot do remux in hls or mpegts.
 It looks like the process freezes and does nothing

 I run approximately the following command
 {{{
 ffmpeg -loglevel debug  -rtsp_transport tcp -stimeout 10000000
 -use_wallclock_as_timestamps 1 -copytb 1 -i
 rtsp://admin:123456@127.0.0.1:5554/profile2 -ss 1-vsync -1 -map 0:0 -c:v
 copy -map 0:1 -c:a aac -async 1 -f hls -use_localtime 1 -hls_time 2
 -hls_list_size 5 -hls_flags delete_segments+second_level_segment_index
 -hls_segment_filename %M%S_%%03d.ts ffmpeg-index.m3u8 -report
 }}}


 there are a lot of such errors in the output
 {{{
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 cur_dts is invalid st:1 (0) [init:0 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 cur_dts is invalid st:1 (0) [init:0 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 cur_dts is invalid st:1 (0) [init:0 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)

 }}}

 mux does not start, while it is possible to send ffmpeg to the SIGTERM
 process, then it ends and at the same time muxes the last data that was in
 the buffer. ts chunks and an index file appear in the directory.

 I also recorded a minute fragment in TS format, errors are reproduced
 bug_808.ts

 {{{
 ffmpeg -re -loglevel debug   -i bug_808.ts -vsync -1 -map 0:0 -c:v copy
 -map 0:1 -c:a aac -async 1 -f hls -use_localtime 1 -hls_time 2
 -hls_list_size 5 -hls_flags delete_segments+second_level_segment_index
 -hls_segment_filename %M%S_%%03d.ts ffmpeg-index.m3u8
 }}}

 I checked on the build from here
 https://www.johnvansickle.com/ffmpeg/
 git master: built on 20211117
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9527>
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