Not able to play the flv files cut by ffmpeg and generated by gStreamer

[rishi]

Hi,
  I am generating the flv files using gstreamer which are working fine and i
am able to play it using ffmpeg and vlc player. but when i cut the flv file
using ffmpeg the cut files are not played in ffmpeg and vlc player.

The vlc player messages say "avcodec warning: cannot decode one frame (6030
bytes)" and 
ffmpeg messages say 
[h264 @ 0x19f2e4a0] non-existing PPS 0 referenced
[h264 @ 0x19f2e4a0] decode_slice_header error
[h264 @ 0x19f2e4a0] no frame!
[h264 @ 0x1a102000] non-existing PPS 0 referenced
[h264 @ 0x1a102000] decode_slice_header error

I have downloaded the sample flv file from internet and it plays fine in vlc
and ffmpeg after cutting.

File details:-
ffmpeg -i 11_0_140414231500225.flv
ffmpeg version 2.0.2 Copyright (c) 2000-2013 the FFmpeg developers
  built on Feb 21 2014 11:25:12 with gcc 4.1.2 (GCC) 20080704 (Red Hat
4.1.2-54)
  configuration: --enable-gpl --enable-shared --disable-yasm
--enable-libx264
  libavutil      52. 38.100 / 52. 38.100
  libavcodec     55. 18.102 / 55. 18.102
  libavformat    55. 12.100 / 55. 12.100
  libavdevice    55.  3.100 / 55.  3.100
  libavfilter     3. 79.101 /  3. 79.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
Input #0, flv, from '11_0_140414231500225.flv':
  Metadata:
    metadatacreator : GStreamer FLV muxer
    creationdate    : Mon Apr 14 23:15:0 2014
  Duration: 00:09:59.12, start: 0.000000, bitrate: 1407 kb/s
    Stream #0:0: Video: h264 (Baseline), yuv420p, 720x576, 25 tbr, 1k tbn,
2k tbc
    Stream #0:1: Audio: aac, 48000 Hz, stereo, fltp



ffmpeg command used to cut the file

ffmpeg -i input.flv -ss 00:00:10 -ar 44100 -bsf:a aac_adtstoasc -acodec copy
-vcodec copy output.flv

What am i missing please help

Regards
Rishi



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