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• Bash : displaying selected output, do not print unnecessary output

  2 juillet 2014, par Guillaume

  I don’t know if it’s possible :
  I’m using ffmpeg and I would like to reduce the output of a command. I have this result :

  ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jun 17 2014 11:08:12 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --prefix=/usr/local --enable-gpl --enable-nonfree --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-libvidstab --enable-libx265
  
    libavutil      52. 89.100 / 52. 89.100
  
    libavcodec     55. 67.100 / 55. 67.100
  
    libavformat    55. 43.100 / 55. 43.100
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  8.100 /  4.  8.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, hls,applehttp, from 'http://ftvodhdsecz-f.akamaihd.net/i/streaming-adaptatif_france-dom-tom/2014/S26/J7/104904507-20140629-,398,632,934,k.mp4.csmil/index_2_av.m3u8?null=':
  
    Duration: 00:51:05.07, start: 0.100667, bitrate: 0 kb/s
  
    Program 0 
  
      Metadata:
  
        variant_bitrate : 0
  
      Stream #0:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 704x396 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:1: Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 67 kb/s
  
      Stream #0:2: Data: timed_id3 (ID3  / 0x20334449)
  
  File '/media/path/video.mkv' already exists. Overwrite ? [y/N] y
  
  [matroska @ 0x2958840] Error parsing AAC extradata, unable to determine samplerate.
  
  Output #0, matroska, to '/media/path/video.mkv':
  
    Metadata:
  
      encoder         : Lavf55.43.100
  
      Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 704x396 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 1k tbn, 90k tbc
  
      Stream #0:1: Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, 67 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  [hls,applehttp @ 0x2864c20] Failed to open segment of playlist 0ate= 844.6kbits/s    
  
  frame= 3000 fps=174 q=-1.0 Lsize=   12325kB time=00:02:00.00 bitrate= 841.4kbits/s 

  I just would like to have this 4 informations :

  1) Duration: 00:51:05.07, start: 0.100667, bitrate: 0 kb/s
  
  2)  File '/media/path/video.mkv' already exists. Overwrite ? [y/N] y
  
  3)  Output #0, matroska, to '/media/path/video.mkv':
  
  4)  frame= 3000 fps=174 q=-1.0 Lsize=   12325kB time=00:02:00.00 bitrate= 841.4kbits/s 

  I’ve tried the -v option, but the output is either -v info (this long output), or -v warning, or -v error. There’s not what I would like to have.
  I’ve seen this question but the output is totally clear. Can I put an exception for specially string ?
  Thanks all

  Edit : my line in my script is like that :

  ffmpeg -i "${M3U2}" -vcodec copy -acodec copy "${Directory}/${PROG}_${ID}.mkv"

• Extract Video Meta Data from First Few MB on S3

  22 août 2016, par David Williams

  I have a large collection of video files on S3. I also have application servers running in AWS running a Java webapp. From those application servers, I would like to be able to extract metadata from each video file such as is provided by the Quicktime movie inspector :

  Source: /home/me/foo.mov
  
  Format: H.264, 1920x1080
  
  FPS: 29.97
  
  Data Size: 16.8 MB
  
  Data Rate: 6.70 Mbit/s

  Now, I can clearly get this information from ffmpeg :

  $ ffmpeg -i /home/me/foo.mov
  
  
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/me/foo.mov':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 1
  
      compatible_brands: isomavc1mp42
  
      creation_time   : 2014-06-30 22:40:08
  
    Duration: 00:00:20.02, start: 0.000000, bitrate: 6698 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 6696 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
  
      Metadata:
  
        creation_time   : 2014-06-30 22:39:09
  
        handler_name    : GPAC ISO Video Handler

  I could easily parse out the equivalent fields to the Quicktime output ! But, this would require I have the file locally. Is it possible to do this from the first few MB (or some other mechanism) of a file hosted on S3 without downloading the whole thing locally ? The goal here is to extract the same fields as the quicktime inspector from a file on S3. Any ideas ?

• ffmpeg drops all frames after 6 seconds

  25 juin 2014, par user2099107

  New to FFMPEG, I’m trying to create a video from a set of png.

  I have 96 png and I’m looking to 4 FPS (24 seconds of video)

  I use the following command :

  /Applications/ffmpeg -y -r 4 -pattern_type glob -i './images/*.png' -c:v libx264 -pix_fmt yuv420p out.mp4 

  my out.mp4 always commes out as roughly 6 seconds with 24 frames, the last 70 frames being dropped.

  here is the full output :

      ffmpeg version 2.2.3-tessus Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jun  4 2014 21:31:51 with clang version 3.3 (tags/RELEASE_33/final)
  
    configuration: --cc=/opt/local/bin/clang-mp-3.3 --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-libmodplug --enable-fontconfig --enable-libfreetype --enable-libass --enable-libbluray --enable-filters --disable-indev=qtkit --enable-runtime-cpudetect
  
    libavutil      52. 66.100 / 52. 66.100
  
    libavcodec     55. 52.102 / 55. 52.102
  
    libavformat    55. 33.100 / 55. 33.100
  
    libavdevice    55. 10.100 / 55. 10.100
  
    libavfilter     4.  2.100 /  4.  2.100
  
    libswscale      2.  5.102 /  2.  5.102
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, image2, from './images/*.png':
  
    Duration: 00:00:03.84, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgba, 1280x1024, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  [libx264 @ 0x103000600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x103000600] profile High, level 3.2
  
  [libx264 @ 0x103000600] 264 - core 142 - 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=-2 threads=12 lookahead_threads=2 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=4 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, mp4, to '/Users/adrien/code/encoding/out.mp4':
  
    Metadata:
  
      encoder         : Lavf55.33.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x1024, q=-1--1, 16384 tbn, 4 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png -> libx264)
  
  Press [q] to stop, [?] for help
  
  Input stream #0:0 frame changed from size:1280x1024 fmt:rgba to size:1280x1024 fmt:rgb24
  
  Input stream #0:0 frame changed from size:1280x1024 fmt:rgb24 to size:1280x1024 fmt:rgba
  
  Input stream #0:0 frame changed from size:1280x1024 fmt:rgba to size:1280x1024 fmt:rgb24
  
  Input stream #0:0 frame changed from size:1280x1024 fmt:rgb24 to size:1280x1024 fmt:rgba
  
  Input stream #0:0 frame changed from size:1280x1024 fmt:rgba to size:1280x1024 fmt:rgb24
  
  Input stream #0:0 frame changed from size:1280x1024 fmt:rgb24 to size:1280x1024 fmt:rgba
  
  Input stream #0:0 frame changed from size:1280x1024 fmt:rgba to size:1280x1024 fmt:rgb24
  
  frame=   26 fps= 21 q=-1.0 Lsize=     165kB time=00:00:06.00 bitrate= 224.9kbits/s dup=0 drop=70    
  
  video:164kB audio:0kB subtitle:0 data:0 global headers:0kB muxing overhead 0.661924%
  
  [libx264 @ 0x103000600] frame I:1     Avg QP: 9.66  size:100467
  
  [libx264 @ 0x103000600] frame P:8     Avg QP:14.08  size:  7610
  
  [libx264 @ 0x103000600] frame B:17    Avg QP:18.26  size:   322
  
  [libx264 @ 0x103000600] consecutive B-frames: 11.5%  0.0% 11.5% 76.9%
  
  [libx264 @ 0x103000600] mb I  I16..4: 23.4% 49.5% 27.1%
  
  [libx264 @ 0x103000600] mb P  I16..4:  3.6%  3.7%  1.3%  P16..4:  1.0%  0.1%  0.2%  0.0%  0.0%    skip:90.1%
  
  [libx264 @ 0x103000600] mb B  I16..4:  0.1%  0.0%  0.1%  B16..8:  1.3%  0.0%  0.0%  direct: 0.0%  skip:98.4%  L0:46.1% L1:53.9% BI: 0.0%
  
  [libx264 @ 0x103000600] 8x8 transform intra:45.8% inter:25.7%
  
  [libx264 @ 0x103000600] coded y,uvDC,uvAC intra: 46.0% 62.8% 42.9% inter: 0.1% 0.2% 0.1%
  
  [libx264 @ 0x103000600] i16 v,h,dc,p: 58% 25% 15%  2%
  
  [libx264 @ 0x103000600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 44% 22% 24%  3%  1%  1%  3%  1%  1%
  
  [libx264 @ 0x103000600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 48% 20% 12%  3%  3%  4%  3%  3%  3%
  
  [libx264 @ 0x103000600] i8c dc,h,v,p: 49% 20% 28%  3%
  
  [libx264 @ 0x103000600] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x103000600] ref P L0: 86.0%  5.3%  7.2%  1.5%
  
  [libx264 @ 0x103000600] ref B L0: 61.7% 35.8%  2.5%
  
  [libx264 @ 0x103000600] ref B L1: 95.8%  4.2%
  
  [libx264 @ 0x103000600] kb/s:205.33