[FFmpeg-devel] error while decoding- "Too many slices"

Hardik Sharma hardik.sharma22 at yahoo.com
Sat Jun 18 23:32:19 CEST 2011


Hi guys,

While doing decoding I am getting this error of "too many slices". Even after increasing MAX_SLICE defined value in h264.h file in libavcodec of FFMPEG to 4096, it's giving the same error. I tried slice-max-size from 100 to 1000 but it is giving me same error for all. Please suggest me for what I should do. I used the following command- 


 ffmpeg -i out1.264 -vcodec rawvideo -f yuv4mpegpipe -y out.y4m
ffmpeg version git-N-30805-g7a02527, Copyright (c) 2000-2011 the FFmpeg developers
  built on Jun 16 2011 10:06:03 with gcc 4.4.5
  configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab
  libavutil    51.  8. 0 / 51.  8. 0
  libavcodec   53.  7. 0 / 53.  7. 0
  libavformat  53.  3. 1 / 53.  3. 1
  libavdevice  53.  1. 1 / 53.  1. 1
  libavfilter   2. 18. 0 /  2. 18. 0
  libswscale    0. 14. 1 /  0. 14. 1
  libpostproc  51.  2. 0 / 51.  2. 0
[h264 @ 0xa72f1e0] Too many slices, increase MAX_SLICES and recompile
    Last message repeated 44 times
[h264 @ 0xa72d360] max_analyze_duration 5000000 reached at 5000000
[h264 @ 0xa72d360] Estimating duration from bitrate, this may be inaccurate

Seems stream 0 codec frame rate differs from container frame rate: 60.00 (60/1) -> 30.00 (60/2)
Input #0, h264, from 'out1.264':
  Duration: N/A, bitrate: N/A
    Stream #0.0: Video: h264 (High), yuv420p, 720x480, 30 fps, 30 tbr, 1200k tbn, 60 tbc
[buffer @ 0xa7358a0] w:720 h:480 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
Output #0, yuv4mpegpipe, to 'out.y4m':
  Metadata:
    encoder         : Lavf53.3.1
    Stream #0.0: Video: rawvideo, yuv420p, 720x480, q=2-31, 200 kb/s, 90k tbn, 30 tbc
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop, [?] for help
[h264 @ 0xa72f1e0] Too many slices, increase MAX_SLICES and recompile
frame=  103 fps=  0 q=0.0 size=   52144kB time=00:00:03.43 bitrate=124417.6kbitsframe=  203 fps=199 q=0.0 size=  102770kB time=00:00:06.76 bitrate=124417.5kbits    Last message repeated 95 times
frame=  299 fps=197 q=0.0 Lsize=  151371kB time=00:00:09.96 bitrate=124417.5kbits/s dup=0 drop=1    
video:0kB audio:0kB global headers:0kB muxing overhead inf%

Will appreciate any suggestion or help. Thanks.

Regards,
Hardik Sharma 


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