[FFmpeg-trac] #4586(ffmpeg:new): ffmpeg cannot re-stream yuvj420 h264 format video from ip camera

[FFmpeg]

#4586: ffmpeg cannot re-stream yuvj420 h264 format video from ip camera
-------------------------------------+-------------------------------------
             Reporter:  tapas        |                     Type:  defect
               Status:  new          |                 Priority:  critical
            Component:  ffmpeg       |                  Version:  git-
             Keywords:  yuvj420p     |  master
  rtsp streaming  fails              |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 I can save camera video to hard disk by running following command :


 {{{
 /home/broadcaster/bin/ffmpeg -use_wallclock_as_timestamps 1 -r 25
 -thread_queue_size 51200 -threads 4 -i
 "rtsp://admin:admin@$1:8557/PSIA/Streaming/channels/2?videoCodecType=H.264"
 -use_wallclock_as_timestamps 1 -r 25 -b:v 2048k -bufsize 20480 -c:v copy
 -f avi cam.avi
 }}}


 But I cannot re-stream video from above ip camera to any FMS server.

 here is the command which I am using for re-streaming:


 {{{
 /home/broadcaster/bin/ffmpeg -use_wallclock_as_timestamps 1 -r 25
 -thread_queue_size 51200 -threads 4 -i
 "rtsp://admin:admin@$1:8557/PSIA/Streaming/channels/2?videoCodecType=H.264"
 -use_wallclock_as_timestamps 1 -r 25 -b:v 2048k -bufsize 20480 -c:v copy
 -f flv rtmp://ip_url
 }}}

 Further debugging showed me that it happens only when ip camera generates
 yuvj420p stream.
 But above command works if I use a different ip camera which outputs video
 format as yuv420p.

 here is the bug report generated with "-report" arguments for affected ip
 camera using above command.

 http://pastebin.com/V7AGrkCQ


 But if I try to record video to hard disk in avi container then ffmpeg
 does it successfully. here is the command which I used to save camera h264
 stream into avi file:


 {{{
 /home/broadcaster/bin/ffmpeg -use_wallclock_as_timestamps 1 -r 25
 -thread_queue_size 51200 -threads 4 -i
 "rtsp://admin:admin@$1:8557/PSIA/Streaming/channels/2?videoCodecType=H.264"
 -use_wallclock_as_timestamps 1 -r 25 -b:v 2048k -bufsize 20480 -c:v copy
 -f avi cam.avi
 }}}


 saved Avi file from above command :
 [1] http://www.datafilehost.com/d/4c6e8f04

 This issue can be easily reproduced if we run following command on above
 [1] avi file:


 {{{
 ffmpeg -v 9 -loglevel 99 -i cam.avi -codec copy -f flv cam.flv -report
 }}}


 ffmpeg does not give any error but it can generate correct flv file too.


 Issue is present on latest ffmpeg as of today (1st June, 2015) found in
 http://johnvansickle.com/ffmpeg/

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4586>
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