id,summary,reporter,owner,description,type,status,priority,component,version,resolution,keywords,cc,blockedby,blocking,reproduced,analyzed
70,PPM decoding from pipe misreads frame sizes,nixscripter,michael,"I am having trouble with piping PPM files to ffmpeg.

If I pipe too many PPM files, I get an error about invalid image size, which is not correct. In fact, I have isolated a small sample of 20 files, which work once, and fail when repeated 7 times (for a total of 140 frames).

With other inputs, I get more serious problems (like a crash), but this problem may be the root cause of several others, and is the easiest to isolate.

Command output:

$ cat output02*ppm output02*ppm output02*ppm output02*ppm output02*ppm output02*ppm output02*ppm | ../../ffmpeg/ffmpeg -v 9 -loglevel 99 -y -f image2pipe -vcodec ppm -i - -sameq /tmp/output.m2v
FFmpeg version git-N-29196-ge61b83d, Copyright (c) 2000-2011 the FFmpeg developers
  built on Apr 19 2011 12:19:46 with gcc 4.4.3
  configuration: --enable-gpl
  libavutil    50. 40. 1 / 50. 40. 1
  libavcodec   52.120. 0 / 52.120. 0
  libavformat  52.108. 0 / 52.108. 0
  libavdevice  52.  4. 0 / 52.  4. 0
  libavfilter   1. 79. 1 /  1. 79. 1
  libswscale    0. 13. 0 /  0. 13. 0
[image2pipe @ 0x2bd4680] Probe buffer size limit 5000000 reached
[image2pipe @ 0x2bd4680] Estimating duration from bitrate, this may be inaccurate
Input #0, image2pipe, from 'pipe:':
  Duration: N/A, bitrate: N/A
    Stream #0.0, 87, 1/25: Video: ppm, rgb24, 160x120, 1/25, 25 fps, 25 tbr, 25 tbn, 25 tbc
Incompatible pixel format 'rgb24' for codec 'mpeg2video', auto-selecting format 'yuv420p'
[buffer @ 0x2bdf390] w:160 h:120 pixfmt:rgb24
[ffsink @ 0x30c7d70] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
[scale @ 0x30c8040] w:160 h:120 fmt:rgb24 -> w:160 h:120 fmt:yuv420p flags:0xa0000004
Output #0, mpeg2video, to '/tmp/output.m2v':
  Metadata:
    encoder         : Lavf52.108.0
    Stream #0.0, 0, 1/90000: Video: mpeg2video, yuv420p, 160x120, 1/25, q=2-31, 200 kb/s, 90k tbn, 25 tbc
Stream mapping:
  Stream #0.0 -> #0.0
[ppm @ 0x2bdf4f0] [IMGUTILS @ 0x7fff8f08bde0] Picture size 160x0 is invalid
    Last message repeated 1 times
frame=  140 fps=  0 q=0.0 Lsize=     422kB time=5.56 bitrate= 621.9kbits/s    
video:422kB audio:0kB global headers:0kB muxing overhead 0.000000%",defect,closed,normal,avcodec,git-master,fixed,ppm,,,,1,0