[FFmpeg-trac] #6646(ffmpeg:new): Problem with ismv

[FFmpeg]

#6646: Problem with ismv
---------------------------------+---------------------------------------
             Reporter:  fliston  |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  ffmpeg   |                  Version:  unspecified
             Keywords:  ffmpeg   |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+---------------------------------------
 Summary of the bug:
 Hello!
 I'm using ffmpeg to encode some live channels which will be delivered
 after by Unified Streaming.
 My player is a STB that is having issues reproducing this output, but on
 iOS works like charm.
 When having an http output, it requires:

 {{{
 -moveflag isml -f ismv
 }}}

 If the output is an ismv file, I eliminate those flags and create the
 manifest with mp4split and my STB reproduces it.

 I believe is something with the length of the stream.

 This doesn't work on my STB:
 {{{
 ffmpeg -nostdin -loglevel info -y -re -i
 udp://XXX.XXX.XXX.XXX:XXXX?pkt_size=1316\&buffer_size=409600\&fifo_size=1000000\&overrun_nonfatal=1
 -c:v libx264 -preset medium -profile:v baseline -g 50 -keyint_min 50
 -sc_threshold 0 -c:a libfdk_aac -ac 2 -b:a 64k -map 0:v -b:v:0 1200k
 -minrate 1200k -maxrate 1200k -bufsize 2400k -muxrate 2400k -s:v:0
 1280x720 -x264opts pic-struct:no-scenecut -movflags isml+frag_keyframe -f
 ismv -threads 0 -map 0:a
 http://XXX.XXX.XXX.XXX/Teledoce_HD/Teledoce_HD.isml/Streams(video)
 }}}

 After creating the manifest with mp4split, this work on my STB:
 {{{
 ffmpeg -nostdin -loglevel info -y -re -i
 udp://XXX.XXX.XXX.XXX:XXXX?pkt_size=1316\&buffer_size=409600\&fifo_size=1000000\&overrun_nonfatal=1
 -c:v libx264 -preset medium -profile:v baseline -g 50 -keyint_min 50
 -sc_threshold 0 -c:a libfdk_aac -ac 2 -b:a 64k -map 0:v -b:v:0 1200k
 -minrate 1200k -maxrate 1200k -bufsize 2400k -muxrate 2400k -s:v:0
 1280x720 -x264opts pic-struct:no-scenecut -movflags frag_keyframe -threads
 0 -map 0:a test.ismv
 }}}

 Any idea?

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6646>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker