Node-fluent-ffmpeg: some xfade transitions fail with `Undefined constant or missing '(' in ...`

[alexandr2110pro]

Version information

• fluent-ffmpeg version: 2.1.2
• ffmpeg version: 4.3.1
• OS: OSX 10.15.6

Code to reproduce

const ffmpeg = require('fluent-ffmpeg');

const command = ffmpeg();

command
  .input('1.mp4')
  .input('2.mp4')
  .input('3.mp4')
  .input('4.mp4')
  .input('5.mp4')
  .input('6.mp4')
  .filterGraph([
    '[0][1]xfade=transition=hblur:duration=0.5:offset=9.25[V1]',
    '[V1][2]xfade=transition=hblur:duration=0.5:offset=13.75[V2]',
    '[V2][3]xfade=transition=hblur:duration=0.5:offset=38.25[V3]',
    '[V3][4]xfade=transition=hblur:duration=0.5:offset=67.75[V4]',
    '[V4][5]xfade=transition=hblur:duration=0.5:offset=107.25,format=yuv420p[video]',
    '[0:a][1:a]acrossfade=duration=0.5:c1=tri:c2=tri[A1]',
    '[A1][2:a]acrossfade=duration=0.5:c1=tri:c2=tri[A2]',
    '[A2][3:a]acrossfade=duration=0.5:c1=tri:c2=tri[A3]',
    '[A3][4:a]acrossfade=duration=0.5:c1=tri:c2=tri[A4]',
    '[A4][5:a]acrossfade=duration=0.5:c1=tri:c2=tri[audio]'
  ])
  .outputOptions(['-map [video]', '-map [audio]'])
  .on('error', (error, stdout, stderr) => {
    console.error('concatenateCommand failed');
    console.error(error);
    console.error(stderr);
  })
  .on('end', () => {
    console.info('concatenateCommand done');
  })
  .saveToFile('out.mp4');

Expected results

Should work with all transition options

Observed results

Works for all except following:

• hblur
• wipetl
• wipebl
• wipetr
• wipebr

Errors are the same. Here is the output for one of them:

  console.log
    [ FFMPEG_SERVICE ] 14:57:22.838 WARN  ffmpeg exited with code 1: Error initializing complex filters.
    Invalid argument

    {}
    Error: ffmpeg exited with code 1: Error initializing complex filters.
    Invalid argument

        at ChildProcess.<anonymous> (/Users/acherednichenko/projects/doodlemaker/doodlemaker.renderer/node_modules/fluent-ffmpeg/lib/processor.js:182:22)
        at ChildProcess.emit (events.js:315:20)
        at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)

      at ConsoleAppender.write (node_modules/simple-node-logger/lib/ConsoleAppender.js:45:13)
          at Array.forEach (<anonymous>)

  console.log
    [ FFMPEG_SERVICE ] 14:57:22.838 WARN  ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
      built with Apple clang version 11.0.3 (clang-1103.0.32.62)
      configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
      libavutil      56. 51.100 / 56. 51.100
      libavcodec     58. 91.100 / 58. 91.100
      libavformat    58. 45.100 / 58. 45.100
      libavdevice    58. 10.100 / 58. 10.100
      libavfilter     7. 85.100 /  7. 85.100
      libavresample   4.  0.  0 /  4.  0.  0
      libswscale      5.  7.100 /  5.  7.100
      libswresample   3.  7.100 /  3.  7.100
      libpostproc    55.  7.100 / 55.  7.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/acherednichenko/projects/doodlemaker/doodlemaker.renderer/lib/capture/__tests__/2.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2avc1mp41
        encoder         : Lavf58.29.100
      Duration: 00:00:09.54, start: 0.000000, bitrate: 609 kb/s
        Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 52 kb/s (default)
        Metadata:
          handler_name    : SoundHandler
        Stream #0:1(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 545 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
        Metadata:
          handler_name    : VideoHandler
    Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/acherednichenko/projects/doodlemaker/doodlemaker.renderer/lib/capture/__tests__/3.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2avc1mp41
        encoder         : Lavf58.29.100
      Duration: 00:00:11.80, start: 0.000000, bitrate: 484 kb/s
        Stream #1:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 66 kb/s (default)
        Metadata:
          handler_name    : SoundHandler
        Stream #1:1(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 405 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
        Metadata:
          handler_name    : VideoHandler
    [xfade @ 0x7fbc3f437780] [Eval @ 0x7ffeeef1eb90] Undefined constant or missing '(' in 'hblur'
    [xfade @ 0x7fbc3f437780] Unable to parse option value "hblur"
    [xfade @ 0x7fbc3f437780] [Eval @ 0x7ffeeef1ebe0] Undefined constant or missing '(' in 'hblur'
    [xfade @ 0x7fbc3f437780] Unable to parse option value "hblur"
    [xfade @ 0x7fbc3f437780] Error setting option transition to value hblur.
    [Parsed_xfade_0 @ 0x7fbc3f4376c0] Error applying options to the filter.
    [AVFilterGraph @ 0x7fbc3f42ec40] Error initializing filter 'xfade' with args 'transition=hblur:duration=0.5:offset=8.786'
    Error initializing complex filters.
    Invalid argument

      at ConsoleAppender.write (node_modules/simple-node-logger/lib/ConsoleAppender.js:45:13)
          at Array.forEach (<anonymous>)

Note: The output above is produced from the integration test which uses some logger lib and etc, but the command setup is the same as in "code to reproduce"

Checklist

• [x] I have read the FAQ
• [ ] I tried the same with command line ffmpeg and it works correctly (hint: if the problem also happens this way, this is an ffmpeg problem and you're not reporting it to the right place)
• [x] I have included full stderr/stdout output from ffmpeg

---

Sorry if I'm posting it here, I'll reference this issue in ffmpeg too.
Even if it is not your problem, I think it is good to know about that for your team too.

[alexandr2110pro]

The FFmpeg CLI tool also fails but I can't submit a bug on their tracker because I can't register.
Their bug tracker doesn't send a confirmation email.
So I'd be super thankful if somebody in your community can help

[alexandr2110pro]

Here is the ffmpeg issue tracker card I eventually managed to post:

https://trac.ffmpeg.org/ticket/8934

Please upvote it.