title: ffmpeg: trsfer a h264 video to a series of jpg failed
body: <p>me and a partner are trying to transfer a h264 video to a series of images using ffmpeg with the following command line:</p>
  
  <pre><code>ffmpeg -i input.h264 -qscale:v 2 output_%03d.jpg
  </code></pre>
  
  <p>The input.h264 can be played perfectly on vlc, but the images generated by ffmpeg are just all black. The message in the console are below:</p>
  
  <pre><code>ffmpeg version 3.4.2-2 Copyright (c) 2000-2018 the FFmpeg developers
    built with gcc 7 (Ubuntu 7.3.0-16ubuntu2)
    configuration: --prefix=/usr --extra-version=2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    libavutil      55. 78.100 / 55. 78.100
    libavcodec     57.107.100 / 57.107.100
    libavformat    57. 83.100 / 57. 83.100
    libavdevice    57. 10.100 / 57. 10.100
    libavfilter     6.107.100 /  6.107.100
    libavresample   3.  7.  0 /  3.  7.  0
    libswscale      4.  8.100 /  4.  8.100
    libswresample   2.  9.100 /  2.  9.100
    libpostproc    54.  7.100 / 54.  7.100
  [h264 @ 0x562ab2afd9e0] error while decoding MB 54 2, bytestream -16
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2afd9e0] error while decoding MB 2 9, bytestream 6907
  [h264 @ 0x562ab2afd9e0] concealing 1275 DC, 1275 AC, 1275 MV errors in P frame
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2afd9e0] error while decoding MB 27 0, bytestream 5564
  [h264 @ 0x562ab2afd9e0] deblocking filter parameters 7 13 out of range
  [h264 @ 0x562ab2afd9e0] decode_slice_header error
  [h264 @ 0x562ab2afd9e0] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  [h264 @ 0x562ab2afd9e0] deblocking filter parameters 7 -14 out of range
  [h264 @ 0x562ab2afd9e0] decode_slice_header error
  [h264 @ 0x562ab2afd9e0] concealing 1387 DC, 1387 AC, 1387 MV errors in P frame
  [h264 @ 0x562ab2afd9e0] deblocking filter parameters -7 0 out of range
  [h264 @ 0x562ab2afd9e0] decode_slice_header error
  [h264 @ 0x562ab2afd9e0] concealing 1413 DC, 1413 AC, 1413 MV errors in P frame
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2afd9e0] error while decoding MB 9 0, bytestream 6647
  [h264 @ 0x562ab2afd9e0] concealing 1186 DC, 1186 AC, 1186 MV errors in P frame
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode
  [h264 @ 0x562ab2afd9e0] error while decoding MB 16 9, bytestream 6182
  [h264 @ 0x562ab2afd9e0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2afd9e0] error while decoding MB 6 18, bytestream 7043
  [h264 @ 0x562ab2afd9e0] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  [h264 @ 0x562ab2afc8c0] Stream #0: not enough frames to estimate rate; consider increasing probesize
  Input #0, h264, from 'temp_file.h264':
    Duration: N/A, bitrate: N/A
      Stream #0:0: Video: h264 (High), yuvj420p(pc, progressive), 1280x720, 29.97 fps, 29.97 tbr, 1200k tbn, 59.94 tbc
  Stream mapping:
    Stream #0:0 -&gt; #0:0 (h264 (native) -&gt; mjpeg (native))
  Press [q] to stop, [?] for help
  [h264 @ 0x562ab2b2f900] error while decoding MB 54 2, bytestream -16
  [h264 @ 0x562ab2b2f900] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2b2f900] error while decoding MB 2 9, bytestream 6907
  [h264 @ 0x562ab2b2f900] concealing 1275 DC, 1275 AC, 1275 MV errors in P frame
  [h264 @ 0x562ab2b01080] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2b01080] error while decoding MB 27 0, bytestream 5564
  [h264 @ 0x562ab2b01080] deblocking filter parameters 7 13 out of range
  [h264 @ 0x562ab2b01080] decode_slice_header error
  [h264 @ 0x562ab2b01080] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  [h264 @ 0x562ab2c49240] deblocking filter parameters 7 -14 out of range
  [h264 @ 0x562ab2c49240] decode_slice_header error
  [h264 @ 0x562ab2c49240] concealing 1387 DC, 1387 AC, 1387 MV errors in P frame
  Output #0, image2, to 'output_%03d.jpg':
    Metadata:
      encoder         : Lavf57.83.100
      Stream #0:0: Video: mjpeg, yuvj420p(pc), 1280x720, q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
      Metadata:
        encoder         : Lavc57.107.100 mjpeg
      Side data:
        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
  [h264 @ 0x562ab2b7fec0] deblocking filter parameters -7 0 out of range
  [h264 @ 0x562ab2b7fec0] decode_slice_header error
  [h264 @ 0x562ab2b7fec0] concealing 1413 DC, 1413 AC, 1413 MV errors in P frame
  [h264 @ 0x562ab2c15240] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2c15240] error while decoding MB 9 0, bytestream 6647
  [h264 @ 0x562ab2c15240] concealing 1186 DC, 1186 AC, 1186 MV errors in P frame
  [h264 @ 0x562ab2c315a0] top block unavailable for requested intra mode
  [h264 @ 0x562ab2c315a0] error while decoding MB 16 9, bytestream 6182
  [h264 @ 0x562ab2c315a0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2c315a0] error while decoding MB 6 18, bytestream 7043
  [h264 @ 0x562ab2c315a0] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  [h264 @ 0x562ab2c447a0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2c447a0] error while decoding MB 12 9, bytestream 6863
  [h264 @ 0x562ab2c447a0] concealing 1342 DC, 1342 AC, 1342 MV errors in P frame
  [h264 @ 0x562ab2bb9180] top block unavailable for requested intra mode
  [h264 @ 0x562ab2bb9180] error while decoding MB 29 18, bytestream 6611
  [h264 @ 0x562ab2bb9180] concealing 1405 DC, 1405 AC, 1405 MV errors in P frame
  [h264 @ 0x562ab2bd54e0] top block unavailable for requested intra mode
  [h264 @ 0x562ab2bd54e0] error while decoding MB 25 9, bytestream 6051
  [h264 @ 0x562ab2bd54e0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2bd54e0] error while decoding MB 70 18, bytestream 5088
  [h264 @ 0x562ab2bd54e0] concealing 1419 DC, 1419 AC, 1419 MV errors in P frame
  [h264 @ 0x562ab2bf1840] top block unavailable for requested intra mode
  [h264 @ 0x562ab2bf1840] error while decoding MB 14 9, bytestream 6071
  [h264 @ 0x562ab2bf1840] deblocking filter parameters -9 0 out of range
  [h264 @ 0x562ab2bf1840] decode_slice_header error
  [h264 @ 0x562ab2bf1840] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  [h264 @ 0x562ab318e0a0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab318e0a0] error while decoding MB 54 9, bytestream 4422
  [h264 @ 0x562ab318e0a0] concealing 1256 DC, 1256 AC, 1256 MV errors in P frame
  [h264 @ 0x562ab31aa020] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab31aa020] error while decoding MB 22 9, bytestream 5862
  [h264 @ 0x562ab31aa020] concealing 1335 DC, 1335 AC, 1335 MV errors in P frame
  [h264 @ 0x562ab2d5a8c0] deblocking filter parameters 7 -4 out of range
  [h264 @ 0x562ab2d5a8c0] decode_slice_header error
  [h264 @ 0x562ab2d5a8c0] concealing 1430 DC, 1430 AC, 1430 MV errors in P frame
  [h264 @ 0x562ab2b2f900] concealing 1319 DC, 1319 AC, 1319 MV errors in P frame
  [h264 @ 0x562ab2b01080] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2b01080] error while decoding MB 16 9, bytestream 6218
  [h264 @ 0x562ab2b01080] concealing 1416 DC, 1416 AC, 1416 MV errors in P frame
  [h264 @ 0x562ab2c49240] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2c49240] error while decoding MB 12 0, bytestream 6854
  [h264 @ 0x562ab2c49240] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2c49240] error while decoding MB 2 9, bytestream 7092
  [h264 @ 0x562ab2c49240] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  [h264 @ 0x562ab2b7fec0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2b7fec0] error while decoding MB 59 0, bytestream 4955
  [h264 @ 0x562ab2b7fec0] deblocking filter parameters 7 15 out of range
  [h264 @ 0x562ab2b7fec0] decode_slice_header error
  [h264 @ 0x562ab2b7fec0] concealing 1430 DC, 1430 AC, 1430 MV errors in P frame
  [h264 @ 0x562ab2c15240] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2c15240] error while decoding MB 34 0, bytestream 5338
  [h264 @ 0x562ab2c15240] deblocking filter parameters 7 13 out of range
  [h264 @ 0x562ab2c15240] decode_slice_header error
  [h264 @ 0x562ab2c15240] concealing 1440 DC, 1440 AC, 1440 MV errors in P frame
  [h264 @ 0x562ab2c315a0] concealing 1344 DC, 1344 AC, 1344 MV errors in P frame
  [h264 @ 0x562ab2c447a0] top block unavailable for requested intra mode -1
  [h264 @ 0x562ab2c447a0] error while decoding MB 49 9, bytestream 4992
  [h264 @ 0x562ab2c447a0] concealing 1228 DC, 1228 AC, 1228 MV errors in P frame
  frame=   21 fps=0.0 q=2.0 Lsize=N/A time=00:00:00.70 bitrate=N/A speed=1.31x    
  video:601kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  </code></pre>
  
  <p>However, this command works perfectly fine on random h264 videoes on the internet, so I guess there may be something wrong with our h264 video, but the weird thing is that it can be played by vlc player just fine...</p>
  
  <p>Any idea what the problem can be? Any help will be appreciated!</p>