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• Converting series of images with ffmpeg results in black video [migrated]

  27 avril 2013, par Marco Gagliardi

  I've just downloaded ffmpeg since it seems to perfectly match my needs (make a video from a set of pictures). I'm currently playing around with some examples just to get started and there's something weird happening that I can't explain.
  I'm trying this command (provided in the official documentation) :

  ffmpeg -f image2 -pattern_type glob -i 'foo-*.jpeg' -r 12 -s WxH foo.avi

  on a data set of 10 jpg pictures (of course I changed the pattern with '*.jpg'). The video seems to be encoded correctly but it's simply too fast to be sure about that (anyway it stops on the last frame that corresponds to the last picture). In order to get a longer video i thought to low the frame rate from 12 to 1 (one sec each picture) or 0.5 (2 sec each one) and so on.. no way ! with low rate values even if the video is played the pictures are simply not displayed. The player (VLC in my case) just shows a blank/empty video for a few seconds.

  Am I making something wrong or have I misunderstood the -r parameter ? Is it something related to codecs involved ? Finally.. How can i get each picture displayed for 1 or 2 seconds ?

  Here's the output :

  MacBook-Pro$ ffmpeg -f image2 -pattern_type glob -i '*.jpg' -r 1 -s 200x300 foo.avi
  
  ffmpeg version N-52517-g1e4f75d Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Apr 27 2013 19:41:11 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
  
    configuration: --disable-yasm
  
    libavutil      52. 27.101 / 52. 27.101
  
    libavcodec     55.  6.100 / 55.  6.100
  
    libavformat    55.  3.100 / 55.  3.100
  
    libavdevice    55.  0.100 / 55.  0.100
  
    libavfilter     3. 61.100 /  3. 61.100
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
  Input #0, image2, from '*.jpg':
  
    Duration: 00:00:00.40, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj422p, 2560x1920 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  File 'foo.avi' already exists. Overwrite ? [y/N] y
  
  Output #0, avi, to 'foo.avi':
  
    Metadata:
  
      ISFT            : Lavf55.3.100
  
      Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 200x300 [SAR 2:1 DAR 4:3], q=2-31, 200 kb/s, 1 tbn, 1 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg -> mpeg4)
  
  Press [q] to stop, [?] for help
  
  frame=    2 fps=0.0 q=2.0 Lsize=      43kB time=00:00:02.00 bitrate= 177.1kbits/s dup=0 drop=8    
  
  video:38kB audio:0kB subtitle:0 global headers:0kB muxing overhead 15.099197%
  
  MacBook-Pro$ 

• Add .mts and .mov support to node-webkit

  11 septembre 2014, par J4G

  I’m trying to create a basic video editor using node-webkit. Obviously, the video format support in Chrome is a huge limiting factor. I know that adding ffmpegsumo.dll adds support for .mp3 and h264. As far as I can tell, there are two options for me. Either I convert every video clip, live, using an ffmpeg stream, OR, I modify ffmpegsumo.dll to add support for the other video file types.

  So far I have been unsuccessful in accomplishing either. Using fluent-ffmpeg I recieve an error

  An error occurred : ffmpeg exited with code 1

  whenever I try to use .writeToStream(). Can anyone advice me in how to proceed ?

• ffmpeg HLS creation and segmentation results in "cannot decode" on iPad

  5 mai 2014, par jt_dylan

  I have the following code that plays on Mac Safari :

      
  
         
  
         
  
         
  
  
  
      <video controls="controls" width="480" height="270">
  
      
  
      <source src="http://d1ckv7o9k6o3x9.cloudfront.net/d54cfa01-eff2-4e86-946e-dc8b2ee4a7e8/media/  hls/MVI_5927.m3u8">
  
      </source></video>

  The url can be cut/pasted into the browser and works also but neither this code nor the url works in Windows Safari or iPad. Specifically on iPad I receive a cannot decode error. On Mac I have Quicktime installed so I tried that on Windows with no luck. The link that can be play on Mac is below.

  http://d1ckv7o9k6o3x9.cloudfront.net/d54cfa01-eff2-4e86-946e-dc8b2ee4a7e8/media/hls/MVI_5927.m3u8

  Browser Versions of software :
  Mac Safari : Version 7.0.3 (9537.75.14) (works)
  Windows Safari : Version 5.1.7 (7534.7.2) (doesn’t work - blank screen)
  iPad Safari : ios Version 7.1.1 (doesn’t work - cannot decode)

  Here is how I’m creating my mp4 (lgpl)
  I’m creating an mp4 with this command :
  ffmpeg -i input.mov c:v mpeg4 q:v 1 test.mp4

  I’m creating the hls using ffmpeg lpgl with this command :

  ffmpegcmd -re -y -i test.mp4 -map 0 -f segment -segment_list test.m3u8 -segment_list_flags +live -segment_time 1 -segment_list_type m3u8 test%05d.ts 2>&1

  Now this works in Mac Safari with Quicktime installed but results in "cannot decode" if I try the url from ipad Safari.

  I then tried with libx264 to create the mp4 as h.264 with aac and then copy to mpeg2 container as follows :

  ffmpeg -i test.mov  -c:v libx264 -c:a libfdk_aac -preset slower -b:a 240k test.slower.mp4
  
  ffmpeg -i test.slower.mp4 -vcodec copy -f mpegts -bsf h264_mp4toannexb test.slower.ts
  
  ffmpeg -re -y -i test.slower.ts -map 0 -f segment -segment_list test.slower.m3u8 -segment_list_flags +live -segment_time 1 -segment_list_type m3u8 test.slower.%05d.ts

  This still produces the same results. Any idea what is wrong here ?

  Any help is much appreciated.

  Regards,
  jt_dylan

  Output from libx264 commands below :

  ffmpeg -i test.mov  -c:v libx264 -c:a libfdk_aac -preset slower -b:a 240k test.slower.mp4
  
  
  
  ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on May  4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
  
    configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
  
    libavutil      52. 81.100 / 52. 81.100
  
    libavcodec     55. 60.103 / 55. 60.103
  
    libavformat    55. 37.102 / 55. 37.102
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  5.100 /  4.  5.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tst/MVI_1716.MOV':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537331968
  
      compatible_brands: qt  CAEP
  
      creation_time   : 2012-07-21 05:17:44
  
    Duration: 00:00:20.06, start: 0.000000, bitrate: 34471 kb/s
  
      Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuvj420p(pc, smpte170m), 1920x1080, 33663 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 48k tbc (default)
  
      Metadata:
  
        creation_time   : 2012-07-21 05:17:44
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16, 768 kb/s (default)
  
      Metadata:
  
        creation_time   : 2012-07-21 05:17:44
  
  No pixel format specified, yuvj420p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 0x39ae9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 0x39ae9e0] profile High, level 5.0
  
  [libx264 @ 0x39ae9e0] 264 - core 142 r2 ac76440 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=8 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=9 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=23 scenecut=40 intra_refresh=0 rc_lookahead=60 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 'tstconv/MVI_1716.slower.mp4':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537331968
  
      compatible_brands: qt  CAEP
  
      encoder         : Lavf55.37.102
  
      Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p, 1920x1080, q=-1--1, 24k tbn, 23.98 tbc (default)
  
      Metadata:
  
        creation_time   : 2012-07-21 05:17:44
  
      Stream #0:1(eng): Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 48000 Hz, mono, s16, 240 kb/s (default)
  
      Metadata:
  
        creation_time   : 2012-07-21 05:17:44
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (pcm_s16le -> libfdk_aac)
  
  Press [q] to stop, [?] for help
  
  frame=  481 fps=1.5 q=-1.0 Lsize=   18428kB time=00:00:20.07 bitrate=7519.9kbits/s    
  
  video:17827kB audio:589kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.060811%
  
  [libx264 @ 0x39ae9e0] frame I:3     Avg QP:23.31  size:113718
  
  [libx264 @ 0x39ae9e0] frame P:135   Avg QP:25.06  size: 56912
  
  [libx264 @ 0x39ae9e0] frame B:343   Avg QP:27.13  size: 29825
  
  [libx264 @ 0x39ae9e0] consecutive B-frames:  1.2%  4.2% 20.6% 74.0%
  
  [libx264 @ 0x39ae9e0] mb I  I16..4: 20.0% 53.3% 26.6%
  
  [libx264 @ 0x39ae9e0] mb P  I16..4:  9.7% 22.8%  5.4%  P16..4: 41.0%  8.6%  5.4%  0.1%  0.0%    skip: 7.0%
  
  [libx264 @ 0x39ae9e0] mb B  I16..4:  3.3%  7.2%  2.0%  B16..8: 40.7%  9.8%  1.7%  direct: 6.3%  skip:29.0%  L0:49.6% L1:44.7% BI: 5.7%
  
  [libx264 @ 0x39ae9e0] 8x8 transform intra:58.9% inter:70.2%
  
  [libx264 @ 0x39ae9e0] direct mvs  spatial:99.4% temporal:0.6%
  
  [libx264 @ 0x39ae9e0] coded y,uvDC,uvAC intra: 58.6% 46.9% 7.3% inter: 23.9% 20.2% 0.2%
  
  [libx264 @ 0x39ae9e0] i16 v,h,dc,p: 10% 64% 14% 12%
  
  [libx264 @ 0x39ae9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 50% 10%  3%  4%  3%  8%  4% 12%
  
  [libx264 @ 0x39ae9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  4% 64%  5%  2%  3%  2%  6%  2% 10%
  
  [libx264 @ 0x39ae9e0] i8c dc,h,v,p: 35% 53%  9%  3%
  
  [libx264 @ 0x39ae9e0] Weighted P-Frames: Y:11.1% UV:4.4%
  
  [libx264 @ 0x39ae9e0] ref P L0: 47.8% 12.2% 15.8%  6.8%  5.7%  4.2%  4.3%  2.6%  0.6%  0.0%
  
  [libx264 @ 0x39ae9e0] ref B L0: 76.8% 10.5%  5.1%  2.9%  2.2%  1.5%  0.9%
  
  [libx264 @ 0x39ae9e0] ref B L1: 94.6%  5.4%
  
  [libx264 @ 0x39ae9e0] kb/s:7279.24
  
  
  
  ffmpeg -i test.slower.mp4 -vcodec copy -f mpegts -bsf h264_mp4toannexb test.slower.ts
  
  
  
  ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on May  4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
  
    configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
  
    libavutil      52. 81.100 / 52. 81.100
  
    libavcodec     55. 60.103 / 55. 60.103
  
    libavformat    55. 37.102 / 55. 37.102
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  5.100 /  4.  5.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tstconv/MVI_1716.slower.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.37.102
  
    Duration: 00:00:20.11, start: 0.042667, bitrate: 7508 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920x1080, 7279 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 240 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  [swscaler @ 0x367c0c0] deprecated pixel format used, make sure you did set range correctly
  
  Output #0, segment, to 'MVI_1716.slower.%05d.ts':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.37.102
  
      Stream #0:0(eng): Video: mpeg2video, yuv420p, 1920x1080, q=2-31, 200 kb/s, 90k tbn, 23.98 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 384 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> mpeg2video)
  
    Stream #0:1 -> #0:1 (aac -> mp2)
  
  Press [q] to stop, [?] for help
  
  frame=  482 fps= 24 q=31.0 Lsize=N/A time=00:00:20.12 bitrate=N/A dup=1 drop=0    
  
  video:8293kB audio:944kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 195032183209984.000000%
  
  ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on May  4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
  
    configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
  
    libavutil      52. 81.100 / 52. 81.100
  
    libavcodec     55. 60.103 / 55. 60.103
  
    libavformat    55. 37.102 / 55. 37.102
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  5.100 /  4.  5.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tstconv/MVI_1716.slower.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.37.102
  
    Duration: 00:00:20.11, start: 0.042667, bitrate: 7508 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920x1080, 7279 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 240 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  File 'tstconv/MVI_1716.slower.ts' already exists. Overwrite ? [y/N] y
  
  Output #0, mpegts, to 'tstconv/MVI_1716.slower.ts':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.37.102
  
      Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuvj420p, 1920x1080, q=2-31, 7279 kb/s, 23.98 fps, 90k tbn, 23.98 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 384 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (aac -> mp2)
  
  Press [q] to stop, [?] for help
  
  frame=  481 fps=0.0 q=-1.0 Lsize=   20334kB time=00:00:20.12 bitrate=8276.6kbits/s    
  
  video:17827kB audio:944kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 8.325850%
  
  
  
  ffmpeg -re -y -i test.slower.ts -map 0 -f segment -segment_list test.slower.m3u8 -segment_list_flags +live -segment_time 1 -segment_list_type m3u8 test.slower.%05d.ts
  
  
  
  ffmpeg version git-2014-05-04-aeeb3d4 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on May  4 2014 17:01:19 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
  
    configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
  
    libavutil      52. 81.100 / 52. 81.100
  
    libavcodec     55. 60.103 / 55. 60.103
  
    libavformat    55. 37.102 / 55. 37.102
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  5.100 /  4.  5.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mpegts, from 'tstconv/MVI_1716.slower.ts':
  
    Duration: 00:00:20.11, start: 1.430733, bitrate: 8282 kb/s
  
    Program 1 
  
      Metadata:
  
        service_name    : Service01
  
        service_provider: FFmpeg
  
      Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc), 1920x1080, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
  
      Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, mono, s16p, 373 kb/s
  
  [swscaler @ 0x1fe9ae0] deprecated pixel format used, make sure you did set range correctly
  
      Output #0, segment, to 'MVI_1716.slower.%05d.ts':
  
        Metadata:
  
          encoder         : Lavf55.37.102
  
          Stream #0:0: Video: mpeg2video, yuv420p, 1920x1080, q=2-31, 200 kb/s, 90k tbn, 23.98 tbc
  
          Stream #0:1(eng): Audio: mp2, 48000 Hz, mono, s16, 384 kb/s
  
      Stream mapping:
  
        Stream #0:0 -> #0:0 (h264 -> mpeg2video)
  
        Stream #0:1 -> #0:1 (mp2 -> mp2)