[FFmpeg-user] With mxg/MxPEG, keyframes only are seen?

[Roger Pack]

>
> I would be grateful if a couple of you who are using 32 bit Linux might be
> so kind as to run the following test:
>
> wget http://bookcracker.com/M00001.**jpg<http://bookcracker.com/M00001.jpg>
>
> ffmpeg -vsync 0 -f mxg -i M00001.jpg foo-%03d.jpeg
>
> and let me know what you get. You should get 56 jpeg files, totaling
> around 8 megs.
> What I get is (with today's git) is the first 4 jpeg files, and then
> ffmpeg hangs.
>


With 32 bit and 64 bit mingw, I get 4 files and a hang.  Though oddly, the
64-bit ones seems to "get farther" (the last line is absent in 32 bit).

ffmpeg version N-45163-gd7a4739 Copyright (c) 2000-2012 the FFmpeg
developers
  built on Oct 29 2012 16:58:45 with gcc 4.7.1 (GCC)
  configuration: --enable-memalign-hack --arch=x86_64 --enable-gpl
--enable-libx264 --enable-avisynth --enable-libxvid --target-os=mingw32
--cross-prefix=/home/rogerdpack/dev/ffmpeg-windows-build-helpers/sandbox/mingw-w64-x86_64/bin/x86_64-w64-mingw32-
--pkg-config=pkg-config --enable-libmp3lame --enable-version3
--enable-libvpx --extra-libs=-lws2_32 --extra-libs=-lpthread --enable-zlib
--extra-libs=-lwinmm --extra-libs=-lgdi32 --enable-librtmp
--enable-libvorbis --enable-libtheora --enable-libspeex
--enable-libopenjpeg --enable-gnutls --enable-libgsm --enable-libfreetype
--disable-optimizations --enable-mmx --disable-postproc --enable-fontconfig
--enable-libass --enable-libutvideo --enable-libopus --disable-w32threads
--extra-cflags=-DPTW32_STATIC_LIB --enable-frei0r --enable-filter=frei0r
--enable-libvo-aacenc --enable-runtime-cpudetect
  libavutil      51. 73.102 / 51. 73.102
  libavcodec     54. 65.100 / 54. 65.100
  libavformat    54. 30.100 / 54. 30.100
  libavdevice    54.  3.100 / 54.  3.100
  libavfilter     3. 19.102 /  3. 19.102
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 16.100 /  0. 16.100
[mxg @ 0000000001D26820] Estimating duration from bitrate, this may be
inaccurate
Guessed Channel Layout for  Input Stream #0.1 : mono
Input #0, mxg, from 'M00001.jpg':
  Duration: 00:02:56.85, start: 1351625054.845054, bitrate: 63 kb/s
    Stream #0:0: Video: mxpeg, yuvj420p, 1280x960, 1.75 tbr, 1000k tbn,
1000k tbc
    Stream #0:1: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
Output #0, image2, to 'foo-%03d.jpeg':
  Metadata:
    encoder         : Lavf54.30.100
    Stream #0:0: Video: mjpeg, yuvj420p, 1280x960, q=2-31, 200 kb/s, 90k
tbn, 1.75 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mxpeg -> mjpeg)
Press [q] to stop, [?] for help
[mjpeg @ 0000000001DE0000] Error, Invalid timestamp=1, last=1
[image2 @ 0000000001D20560] st:0 PTS: 51429 DTS: 51429 < 51430 invalid,
clipping