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• Convert mp3 -> Video with static image ( ffmpeg/libav & BASH )

  19 août 2014, par Max

  Some years ago I used the following bash script to get a video out of mp3’s and one image (so the image in the video was freezed over the length of the mp3), which worked out fine.

  i=0;
  
  for file in *.mp3; 
  
  do 
  
  i=$((i+1));
  
  ffmpeg -loop 1 -shortest -y -i image.jpg -i $file -acodec copy -vcodec libx264 $file.flv;
  
  done

  Now I wanted to use this again for doing the same.

  Problem :

  It does not stop converting at the end of the mp3. Means the current mp3 file eg. has a length of 3 minutes and the script converts until forever or I stop it, so the length of the flv is much bigger than 3 minutes.

  (ffmpeg is installed, but with libav the same happens)

  Output :

  ffmpeg version 1.2.6-7:1.2.6-1~trusty1 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Apr 26 2014 18:52:58 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --arch=amd64 --disable-stripping --enable-avresample --enable-pthreads --enable-runtime-cpudetect --extra-version='7:1.2.6-1~trusty1' --libdir=/usr/lib/x86_64-linux-gnu --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libfreetype --enable-frei0r --enable-gnutls --enable-libgsm --enable-libmp3lame --enable-librtmp --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-vaapi --enable-vdpau --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-postproc --enable-libcdio --enable-x11grab --enable-libx264 --shlibdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static
  
    libavutil      52. 18.100 / 52. 18.100
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.104 / 54. 63.104
  
    libavdevice    53.  5.103 / 53.  5.103
  
    libavfilter     3. 42.103 /  3. 42.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  [image2 @ 0x6d0740] max_analyze_duration 5000000 reached at 5000000 microseconds
  
  Input #0, image2, from 'Bild2.png':
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgba, 382x417, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  [mp3 @ 0x6c4ac0] max_analyze_duration 5000000 reached at 5015510 microseconds
  
  [mp3 @ 0x6c4ac0] Estimating duration from bitrate, this may be inaccurate
  
  Input #1, mp3, from 'sons.mp3':
  
    Duration: 00:00:35.11, start: 0.000000, bitrate: 127 kb/s
  
      Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
  
  [libx264 @ 0x6da700] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x6da700] profile High 4:4:4 Predictive, level 2.1, 4:4:4 8-bit
  
  [libx264 @ 0x6da700] 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, flv, to 'sons.mp3.flv':
  
    Metadata:
  
      encoder         : Lavf54.63.104
  
      Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv444p, 382x417, q=-1--1, 1k tbn, 25 tbc
  
      Stream #0:1: Audio: mp3 ([2][0][0][0] / 0x0002), 44100 Hz, stereo, 128 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png -> libx264)
  
    Stream #1:0 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help

• capture DV video and audio with ffmpeg and dshow

  18 novembre 2016, par andrixnet

  Trying to capture video and audio from a DV camera, using ffmpeg, I got into a problem.
  Before anything, I first tried to see (and hear) with ffplay.

  ffmpeg version :

  ffplay version 3.0 Copyright (c) 2003-2016 the FFmpeg developers
  
    built with gcc 5.3.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55. 17.103 / 55. 17.103
  
    libavcodec     57. 24.102 / 57. 24.102
  
    libavformat    57. 25.100 / 57. 25.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 31.100 /  6. 31.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100

  Getting list of DirectShow devices :
  ffplay -hide_banner -f dshow -list_devices true -i dummy

  [dshow @ 035c4240] DirectShow video devices (some may be both video and audio devices)
  
  [dshow @ 035c4240]  "Microsoft DV Camera and VCR" sq=    0B f=0/0
  
  [dshow @ 035c4240]     Alternative name "@device_pnp_\\?\avc#canon&mvx3i&camcorder&dv#5126800000850000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
  
  [dshow @ 035c4240] DirectShow audio devices
  
  [dshow @ 035c4240]  "1-ESI MAYA44 Ch12"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\1-ESI MAYA44 Ch12"
  
  [dshow @ 035c4240]  "2-ESI MAYA44 Ch34"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\2-ESI MAYA44 Ch34"
  
  [dshow @ 035c4240]  "3-ESI MAYA44 Ch1234"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\3-ESI MAYA44 Ch1234"
  
  [dshow @ 035c4240]  "Realtek HD Audio Input"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Realtek HD Audio Input"
  
  [dshow @ 035c4240]  "Realtek HD Digital input"
  
  [dshow @ 035c4240]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Realtek HD Digital input"
  
  dummy: Immediate exit requested

  I can use VLC with "Capture device" as input, selecting "Microsoft DV Camera and VCR" as video device and leaving "Default" as audio device and I get both video and audio.

  With ffmpeg I get only video stream, no audio.

  C:\>ffplay -hide_banner -f dshow -i video="Microsoft DV Camera and VCR"
  
  Input #0, dshow, from 'video=Microsoft DV Camera and VCR':B f=0/0
  
    Duration: N/A, start: 0.010035, bitrate: N/A
  
      Stream #0:0: Video: dvvideo (dvsd / 0x64737664), yuv420p, 720x576 [SAR 16:15
  
   DAR 4:3], 25 tbr, 10000k tbn, 25 tbc
  
     0.48 M-V:  0.013 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0

  I don’t know how to tell ffmpeg the equivalent of "Default" audio device as VLC recognizes it.

  Device options show there are 2 pins for video device (DV device has both video and audio) but how can I tell ffmpeg such that it captures both video and audio ?

  C:\>ffplay -hide_banner -f dshow -list_options true -i video="Microsoft DV Camera and VCR"
  
  [dshow @ 035c3260] DirectShow video device options (from video devices)
  
  [dshow @ 035c3260]  Pin "DV Vid Out" (alternative pin name "0")
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x480 fps=29.97 max s=720x480 fps=2
  
  9.97
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x576 fps=25 max s=720x576 fps=25
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x480 fps=29.97 max s=720x480 fps=2
  
  9.97
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x576 fps=25 max s=720x576 fps=25
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x480 fps=29.97 max s=720x480 fps=2
  
  9.97
  
  [dshow @ 035c3260]   vcodec=dvvideo  min s=720x576 fps=25 max s=720x576 fps=25
  
  [dshow @ 035c3260]  Pin "DV A/V Out" (alternative pin name "1")
  
  video=Microsoft DV Camera and VCR: Immediate exit requested f=0/0

  Thank you.

• ffmpeg/ffplay stream error using Windows 10

  23 juin 2018, par Alan

  I’m using Android’s screenrecord to stream the device screen via adb and pipe the
  output to ffplay 3.4. It works great using OS X via the command :

  adb shell screenecord --bit-rate=16m --output-format=h264 --size 800x600 -   | c:\bin\ffplay.exe -framerate 30 -framedrop -bufsize 60M -

  Windows 10 is a different story. I get a blurred out screen and the following stream of errors :

          ffplay version 3.4 Copyright (c) 2003-2017 the FFmpeg developers
  
          built with gcc 7.2.0 (GCC)
  
          configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
  
          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
  
          libswscale      4.  8.100 /  4.  8.100
  
          libswresample   2.  9.100 /  2.  9.100
  
          libpostproc    54.  7.100 / 54.  7.100
  
          [h264 @ 000002a5f08320c0] negative number of zero coeffs at 9 6/0
  
         [h264 @ 000002a5f08320c0] error while decoding MB 9 6
  
         [h264 @ 000002a5f08320c0] concealing 1640 DC, 1640 AC, 1640 MV errors in I frame
  
         [h264 @ 000002a5f08320c0] negative number of zero coeffs at 44 7
  
         [h264 @ 000002a5f08320c0] error while decoding MB 44 7
  
         [h264 @ 000002a5f08320c0] concealing 1555 DC, 1555 AC, 1555 MV errors in P frame
  
         [h264 @ 000002a5f08320c0] out of range intra chroma pred mode
  
         [h264 @ 000002a5f08320c0] error while decoding MB 12 7
  
         [h264 @ 000002a5f08320c0] concealing 1587 DC, 1587 AC, 1587 MV errors in P frame
  
         [h264 @ 000002a5f08320c0] out of range intra chroma pred mode
  
         [h264 @ 000002a5f08320c0] error while decoding MB 49 6
  
         [h264 @ 000002a5f08320c0] concealing 1600 DC, 1600 AC, 1600 MV errors in P frame
  
         [h264 @ 000002a5f08320c0] mb_type 260 in P slice too large at 11 11
  
         [h264 @ 000002a5f08320c0] error while decoding MB 11 11
  
         [h264 @ 000002a5f08320c0] concealing 1388 DC, 1388 AC, 1388 MV errors in P frame
  
         [h264 @ 000002a5f08320c0] out of range intra chroma pred mode
  
         [h264 @ 000002a5f08320c0] error while decoding MB 24 16
  
         [h264 @ 000002a5f08320c0] concealing 1125 DC, 1125 AC, 1125 MV errors in P frame
  
         Input #0, h264, from 'pipe:':q=    0KB vq=    0KB sq=    0B f=0/0
  
           Duration: N/A, bitrate: N/A    nan    :  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0
  
            Stream #0:0: Video: h264 (Baseline), yuv420p(tv, bt470bg/bt470bg/smpte170m, progressive), 800x600, 30 fps, 30 tbr, 1200k tbn, 60 tbc
  
         [h264 @ 000002a5f144e4c0] negative number of zero coeffs at 9 6
  
         [h264 @ 000002a5f144e4c0] error while decoding MB 9 6
  
         [h264 @ 000002a5f144e4c0] concealing 1640 DC, 1640 AC, 1640 MV errors in I frame
  
         [h264 @ 000002a5f10500a0] negative number of zero coeffs at 44 7
  
         [h264 @ 000002a5f10500a0] error while decoding MB 44 7
  
         [h264 @ 000002a5f10500a0] concealing 1555 DC, 1555 AC, 1555 MV errors in P frame
  
         [h264 @ 000002a5f1050840] out of range intra chroma pred mode
  
         [h264 @ 000002a5f1050840] error while decoding MB 12 7
  
         [h264 @ 000002a5f1050840] concealing 1587 DC, 1587 AC, 1587 MV errors in P frame
  
         [h264 @ 000002a5f0e500a0] out of range intra chroma pred mode
  
         [h264 @ 000001f5df14e5e0] cbp too large (51) at 43 7=    0B f=0/0
  
         [h264 @ 000001f5df14e5e0] error while decoding MB 43 7
  
         [h264 @ 000001f5df14e5e0] concealing 1556 DC, 1556 AC, 1556 MV errors in P frame
  
         [h264 @ 000001f5de6c9980] cbp too large (51) at 43 7=    0B f=0/0
  
         [h264 @ 000001f5de6c9980] error while decoding MB 43 7
  
         [h264 @ 000001f5de6c9980] concealing 1556 DC, 1556 AC, 1556 MV errors in P frame
  
         [ h264 @ 000001f5df338b20] cbp too large (51) at 18 7=    0B f=0/0
  
         [h264 @ 000001f5df338b20] error while decoding MB 18 7
  
         [h264 @ 000001f5df338b20] concealing 1581 DC, 1581 AC, 1581 MV errors in P frame
  
         [h264 @ 000001f5de618f20] cbp too large (60) at 30 8=    0B f=0/0
  
         [h264 @ 000001f5de618f20] error while decoding MB 30 8
  
         [h264 @ 000001f5de618f20] concealing 1519 DC, 1519 AC, 1519 MV errors in P frame
  
         [h264 @ 000001f5de5f9120] cbp too large (151) at 15 11   0B f=0/0
  
         [h264 @ 000001f5de5f9120] error while decoding MB 15 11
  
         [h264 @ 000001f5de5f9120] concealing 1384 DC, 1384 AC, 1384 MV errors in P frame
  
         [h264 @ 000001f5df14e5e0] cbp too large (51) at 17 8=    0B f=0/0
  
         [h264 @ 000001f5df14e5e0] error while decoding MB 17 8
  
         [h264 @ 000001f5df14e5e0] concealing 1532 DC, 1532 AC, 1532 MV errors in P frame

  How can I fix this ?