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• fluent ffmpeg size output option not working

  19 janvier 2017, par Ashbury

  Summary : I’m trying to limit output to 3mb, .outputOptions('-fs 3000000') isn’t working for me, the file is coming back with a size of 119260428 or 119mb.

  Here is the code to try for yourself, all you need is a test.mp3 large enough that the resulting testoutput.ogg is > 3mb :

  var ffmpeg = require("fluent-ffmpeg");
  
  var command = ffmpeg();
  
  
  
  var convertToOGG = function(){
  
    var fileName = 'test.mp3'
  
  
  
    ffmpeg.ffprobe(fileName, function(err, metadata) {
  
      command
  
        .input(fileName)
  
        .inputFormat("mp3")
  
        .audioChannels(1)
  
        .outputOptions('-fs', 3000000)
  
        .output('testoutput.ogg')
  
        .on("progress", function(progress) {
  
          console.log("Processing: " + progress.timemark);
  
        })
  
        .on("error", function(err, stdout, stderr) {
  
          console.log("Cannot process video: " + err.message);
  
        })
  
        .on("end", function(stdout, stderr) {
  
          ffmpeg.ffprobe('testoutput.ogg', function(err,metadata){
  
            if(metadata.format.size >= 3000000){
  
  
  
              console.log("didn't work")
  
            } 
  
          })
  
        })
  
      .run();
  
    });
  
  };
  
  
  
  convertToOGG();

  Per the fluent-ffmpeg documentation you should be able to use a ffmpeg command in an output option : outputOption()

  This method allows passing any output-related option to ffmpeg. You can call it with a single argument to pass a single option, optionnaly
  with a space-separated parameter :

  /* Single option */
  
  ffmpeg('/path/to/file.avi').outputOptions('-someOption');

  and in FFMPEG’s documentation :

  -fs limit_size (output) Set the file size limit, expressed in bytes. No further chunk of bytes is written after the limit is exceeded. The
  size of the output file is slightly more than the requested file size.

  It’s giving me no errors, just seemingly ignoring the file size limit of 99mb and outputting a 119.3mb file.

  Edit - Looks like -fs 3000000 is working for mp3 to wav, but still wont do mp3 to ogg. This is the output from running the command in terminal :

  ✗ ffmpeg -i test.mp3 -fs 3000000 testoutput.ogg
  
  ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
  
    libavutil      55. 34.100 / 55. 34.100
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.100 / 57. 56.100
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  [mp3 @ 0x7fc6a4000000] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from 'test.mp3':
  
    Metadata:
  
      lyrics-eng      : xxx
  
      title           : xxx
  
      artist          : xxx
  
      album_artist    : xxx
  
      album           : xxx
  
      genre           : xxx
  
    Duration: 03:27:28.74, start: 0.000000, bitrate: 128 kb/s
  
      Stream #0:0: Audio: mp3, 44100 Hz, mono, s16p, 128 kb/s
  
      Stream #0:1: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 540x360, 90k tbr, 90k tbn, 90k tbc
  
      Metadata:
  
        title           : Array
  
        comment         : Cover (front)
  
  [swscaler @ 0x7fc6a4808800] deprecated pixel format used, make sure you did set range correctly
  
  [ogg @ 0x7fc6a3815800] Frame rate very high for a muxer not efficiently supporting it.
  
  Please consider specifying a lower framerate, a different muxer or -vsync 2
  
  Output #0, ogg, to 'testoutput.ogg':
  
    Metadata:
  
      lyrics-eng      : xxx
  
      title           : xxx
  
      artist          : xxx
  
      album_artist    : xxx
  
      album           : xxx
  
      genre           : xxx
  
      encoder         : Lavf57.56.100
  
      Stream #0:0: Video: theora (libtheora), yuv444p, 540x360, q=2-31, 200 kb/s, 90k fps, 90k tbn, 90k tbc
  
      Metadata:
  
        title           : Array
  
        DESCRIPTION     : Cover (front)
  
        encoder         : Lavc57.64.101 libtheora
  
        lyrics-eng      : xxx
  
        artist          : xxx
  
        ALBUMARTIST     : xxx
  
        album           : xxx
  
        genre           : xxx
  
      Stream #0:1: Audio: vorbis (libvorbis), 44100 Hz, mono, fltp
  
      Metadata:
  
        encoder         : Lavc57.64.101 libvorbis
  
        lyrics-eng      : xxx
  
        title           : xxx
  
        artist          : xxx
  
        ALBUMARTIST     : xxx
  
        album           : xxx
  
        genre           : xxx
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (mjpeg (native) -> theora (libtheora))
  
    Stream #0:0 -> #0:1 (mp3 (native) -> vorbis (libvorbis))
  
  Press [q] to stop, [?] for help
  
  frame=    1 fps=0.0 q=-0.0 Lsize=  116465kB time=03:27:28.71 bitrate=  76.6kbits/s speed=61.2x
  
  video:9kB audio:114907kB subtitle:0kB other streams:0kB global headers:6kB muxing overhead: 1.347787%

• android - ffmpeg overlay videos not working properly

  2 janvier 2017, par MickSt

  What I’m trying to do : I have 2 videos (the first one is recorded in the app itself, the second was pre-recorded and it’s shorter than the first). I’m trying to overlay it with the following FFMpeg command :

  finalCommand = new String[]{"-y",
  
                  "-i", vid1,
  
                  "-i", vid2,
  
                  "-i", aud1,
  
                  "-i", aud2,
  
                  "-strict", "experimental", "-filter_complex",
  
                          "[0:a] volume=0.2 [a8];"
  
                          +"[3:a] atrim=end="+String.valueOf(newTimePause)+" [a12];"
  
                          +"[3:a] atrim=start="+String.valueOf(newTimePause)+" [a14];"
  
                          +"[a14] adelay="+String.valueOf(newDelayInt)+"|"
  
                          +String.valueOf(newDelayInt)+" [a16];"
  
                          + "[a8][a12][a16][2:a:0] amix=inputs=4 [a];"
  
                          + "movie=" + watermark + " [watermark];"
  
                          + "[0:v][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [outv0];"
  
                          + "[1] fifo, scale=iw/2.5:ih/2.5 [vid2];"
  
                          + "[vid2]fifo, trim=end=80.5 [vid5];"
  
                          + "[vid2] fifo, trim=start=80.5 [vid6];"
  
                          + "[outv0][vid5] overlay=10:10:enable=\'between(t,0,84)\' [outv6];"
  
                          + "[outv6][vid6] overlay=10:10:enable=\'between(t,84,101)\' [outv]",
  
                  "-map", "[outv]",
  
                  "-map", "[a]",
  
                  "-r", "30",
  
                  "-b",
  
                  "4000k",
  
                  "-vcodec", "mpeg4",
  
                  "-ab", "44100", "-ac", "2", "-ar", "44100",
  
                  IOUtils.getFINALdir(this)+"/finalvid.mp4"
  
          };

  So : vid1 is an mp4 video recorded in the app, watermark is a png image that should be overlayed during all vid1, and vid2 is the one pre-recorded. And the difference in length between vid1 and vid2 depends on the user. So I need to split vid2 at 80.5 seconds into 2 pieces, then overlay the first piece of vid2 from the beginning of vid1 to the time user clicked the button (here it’s hardcoded as 84 for convenience, and I know that from 80.5 to 84 the last frame will remain overlaid - it’s ok), then overlay the second piece from this "84" till the end. (it’s almost the same for aud2 - the corresponding audio for vid2 - but aud2 works fine)

  But with this piece of code it looks like it takes a lot of memory and lots of frames of overlaid vid2 just get lost - it just freezes. And the line + "[outv6][vid6] overlay=10:10:enable=\'between(t,84,101)\' [outv]", ruins everything so that from 84 till the end nothing is finally overlaid including the watermark (why so ?)

  And the other problem is this is too slow. Idk how to export a video of 720p or 1080p and that it be not too slow, not be of a big file size and not stop with OOM (now it’s about 480p and takes about 50Mb - I want a larger resolution with a smaller size).

  I think the whole command can be rewritten better, but how ? What am I doing wrong and how to fix it all ? Thanks in advance !

• Old TV : ffmpeg-converted file not working

  29 décembre 2016, par senseiwa

  I have an old Full-HD TV (Philips) that supports USB reading with some video formats. However, it just supports one audio stream (the first), so in case I have two with the first that is not english, I need to remove the first one. I am doing this via ffmpeg, but the TV cannot read the converted file, although they are identical (except for one audio track).

  The conversion command I am using is is

   ffmpeg -i filename.IN -map 0:0 -map 0:2 -acodec copy -vcodec copy  filename.OUT

  to just copy the video/audio stream, but keeping only the second audio track. The original file is this one (output of ffprobe) and it works perfectly reproducing the video with the first audio track :

  Input #0, avi, from 'ORIG.avi':
  
    Metadata:
  
      encoder         : X
  
    Duration: 01:40:57.18, start: 0.000000, bitrate: 2695 kb/s
  
      Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 656x368 [SAR 1:1 DAR 41:23], 1914 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
  
      Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), fltp, 384 kb/s
  
      Stream #0:2: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), fltp, 384 kb/s

  and the converted not working one is

  Input #0, avi, from 'CONV.avi':
  
    Metadata:
  
      encoder         : Lavf57.56.100
  
    Duration: 01:40:57.18, start: 0.000000, bitrate: 2309 kb/s
  
      Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 656x368 [SAR 1:1 DAR 41:23], 1914 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
  
      Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), fltp, 384 kb/s

  On a PC, however, they both work.

  The question is, how can I convert, keeping eventually just one audio track, in a format that my TV supports without losing quality ?

  I do not have the list of supported codecs, but I have a list of videos that the TV is able to reproduce.