Recherche avancée

Sur d’autres sites (7521)

• ffmpeg : trsfer a h264 video to a series of jpg failed

  21 juin 2018, par 徐立派

  me and a partner are trying to transfer a h264 video to a series of images using ffmpeg with the following command line :

  ffmpeg -i input.h264 -qscale:v 2 output_%03d.jpg

  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 :

  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 -> #0:0 (h264 (native) -> 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

  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...

  Any idea what the problem can be ? Any help will be appreciated !

• Add transparancy while creating GIFimages from PNG series using ffmpeg [on hold]

  4 avril 2018, par arun

  I have created a gif image from a transparent series of PNG.
  The output gif image did not have transparancy.

     ffmpeg "-i" ,new File(Environment.getExternalStorageDirectory() + "/folder/" + "file_%4d.png").getPath(), new File(Environment.getExternalStorageDirectory() +"/out.gif").getPath()

  Any other parameter to add ?

• Writing a series of images into a video file using libavcodec (ffmpeg)

  19 novembre 2013, par user2978372

  Requirements :

  I have a bunch of images (to be more specific they are 1024x768, 24bpp RGB PNG files) that I want to encode into a video files.

  And I need to use 'libavcodec' library, not 'ffmpeg' tool. (well I know they are basically same in the origin, I am emphasizing because someone may answer to use 'ffmpeg' tool, but that's not a solution what I am looking for)

  I am using h264 encoder.

  Target :
  A high quality video with equal resolution (1024 x 768), YUV420P
  each image has a duration of 1 second.
  24 fps

  Problems :
  i've tried with many different (but same resolution and bits) png images, and all have failed to output a good video.

  For some series of images, only the frames of first second was shown in a good shape, but the remaining frames was distorted and color changed (lighter).

  For some series of images, it seemed the images were zoomed-in and distorted again.

  and etc.

  Question :
  I am a total AV newbie and I need someone to verify my steps for encoding. I am total AV newbie.

  1) av_register_all()

  2) avcodec_register_all()

  3) avcodec_find_encoder()

  4) avcodec_alloc_context3()

  5) sets codec configuraton to context.

  6) avcodec_open2()

  7) opens a output file using fopen_s()

  8)

  for(int second=1; second<=10; ++seconds)
  
  {
  
  
  
    Read a image from local using Gdiplus
  
  
  
    Create a gdiplus bitmap and draw the image onto this bitmap
  
  
  
    Get the raw byte data using LockBits
  
  
  
    Transfer this RGB raw byte into YUV420 frame using 'swscontext', 'sws_scale'
  
  
  
    for(int f=0; f<24; ++f)
  
    {
  
      av_init_packet(&pkt);
  
      pkt.data = NULL;
  
      pkt.size = 0;
  
  
  
      pFrame->pts = f;
  
      ret = avcodec_encode_video2(pContext, &pkt, pFrame, &got_output);
  
  
  
      if(got_output)
  
      {
  
          fwrite(pkt.data, 1, pkt.size, outputFile);
  
          av_free_packet(&pkt);
  
      }
  
    }
  
  }
  
  
  
  /* get the delayed frames */
  
  for (got_output = 1; got_output; i++) {
  
      fflush(stdout);
  
  
  
      ret = avcodec_encode_video2(c, &pkt, NULL, &got_output);
  
      if (ret < 0) {
  
          fprintf(stderr, "Error encoding frame\n");
  
          exit(1);
  
      }
  
  
  
      if (got_output) {
  
          printf("Write frame %3d (size=%5d)\n", i, pkt.size);
  
          fwrite(pkt.data, 1, pkt.size, f);
  
          av_free_packet(&pkt);
  
      }
  
  }
  
  
  
  close everything required

  I am sure that I misunderstood some steps using ffmpeg api. The above pseudo codes are based on the 'encoding' example of ffmpeg. which part am I doing wrong ? please can someone help me ?

  p.s sorry about broken english. english is not my natvie language. I tried my best =P