FFMPEG 字幕绘制文本错误，‘between(t)’ 中的参数太多

Question

我正在尝试使用 drawtext 在视频上添加多个类似字幕的文本。当我有 1 或 2 个 drawtext 参数时它会起作用，如下所示：

在职的：

  ffmpeg -i outa.mp4 -vf "[in]drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=60: fontcolor=white:x=20: y=500:text='My real fear is that':enable='between(t,5,10)',drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=60: fontcolor=white:x=0: y=500:text='the truth of the matter is people':enable='between(t,11,20)'[out]"  output.mp4

但是当我尝试添加多个 drawtext 选项时，出现错误并且转换失败。

请参阅下面的尝试，然后查看失败转换的输出。任何朝着正确方向迈出的举措都将不胜感激。

**仅供参考：我也尝试直接刻录 SRT 文件，但样式选项有限，因此我避免这样做，而是使用 drawtext。

试图：

ffmpeg -i outa.mp4 -vf "[in]drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='My real fear is that they\\\'re going to invent a ':enable='between(t,0,4)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='better eye for blind people . And when they do ':enable='between(t,4,9)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text=', like Look how amazing this is . We\\\'ve given ':enable='between(t,8,11)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='blind people the ability to see again , too possum ':enable='between(t,11,13)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='. But now they also have all these other features ':enable='between(t,13,16)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='that you don\\\'t have with your regular eyes . Let ':enable='between(t,16,17)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='us scooped those bad boys . ':enable='between(t,17,18)'[out]" aoutput.mp4

转换失败后我在终端上得到的输出：

ffmpeg -i outa.mp4 -vf "[in]drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='My real fear is that they\\\'re going to invent a ':enable='between(t,0,4)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='better eye for blind people . And when they do ':enable='between(t,4,9)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text=', like Look how amazing this is . We\\\'ve given ':enable='between(t,8,11)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='blind people the ability to see again , too possum ':enable='between(t,11,13)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='. But now they also have all these other features ':enable='between(t,13,16)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='that you don\\\'t have with your regular eyes . Let ':enable='between(t,16,17)';drawtext=fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text='us scooped those bad boys . ':enable='between(t,17,18)'[out]"  aoutput.mp4
ffmpeg version N-48288-g3b23eb283a-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  libavutil      56. 26.100 / 56. 26.100
  libavcodec     58. 47.102 / 58. 47.102
  libavformat    58. 26.101 / 58. 26.101
  libavdevice    58.  6.101 / 58.  6.101
  libavfilter     7. 48.100 /  7. 48.100
  libswscale      5.  4.100 /  5.  4.100
  libswresample   3.  4.100 /  3.  4.100
  libpostproc    55.  4.100 / 55.  4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'outa.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.26.101
  Duration: 00:03:25.92, start: 0.000000, bitrate: 147 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 810x660, 12 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[drawtext @ 0x650edc0] [Eval @ 0x7fffcb9196b0] Missing ')' or too many args in 'between(t'
[drawtext @ 0x650edc0] Error when evaluating the expression 'between(t' for enable
[AVFilterGraph @ 0x650b9c0] Error initializing filter 'drawtext' with args 'fontfile=fonts/BebasNeue-Regular.otf:fontsize=40: fontcolor=white:x=20: y=500:text=My real fear is that they\\re going to invent a :enable=between(t'
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
[aac @ 0x5e11e40] Qavg: 11771.192
[aac @ 0x5e11e40] 2 frames left in the queue on closing

我该如何避免这个错误？提前致谢！任何步骤都将不胜感激。