ffmpeg cannot re-stream yuvj420 h264 format video from ip camera

[tapas]

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/

[tapas]

rtsp streaming failed for yuvj420p h264 video format

[tapas]

ffmpeg cannot convert avi to flv format

[Michael Niedermayer]

How can this issue be reproduced ?