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  • Adding some kind of subtitle to an mp4 with ffmpeg

    23 juin 2017, par Steven Van Ingelgem

    I have a subtitle (it certainly looks like it), but I don’t know how to add it into an MP4 I’m creating.
    First a hexdump of the subtitle :

    00000000  00 00 00 18 66 74 79 70  69 73 6f 36 00 00 00 00  |....ftypiso6....|
    
00000010  69 73 6f 36 64 61 73 68  00 00 00 28 66 72 65 65  |iso6dash...(free|
    
00000020  55 53 50 20 62 79 20 43  6f 64 65 53 68 6f 70 11  |USP by CodeShop.|
    
00000030  11 11 11 11 11 11 11 11  11 11 11 11 11 11 11 11  |................|
    
00000040  00 00 02 1d 6d 6f 6f 76  00 00 00 6c 6d 76 68 64  |....moov...lmvhd|
    
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 01  |................|
    
00000060  00 00 00 00 00 01 00 00  01 00 00 00 00 00 00 00  |................|
    
00000070  00 00 00 00 00 01 00 00  00 00 00 00 00 00 00 00  |................|
    
*
    
00000090  00 00 00 00 40 00 00 00  00 00 00 00 00 00 00 00  |....@...........|
    
000000a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    
000000b0  00 00 00 02 00 00 01 81  74 72 61 6b 00 00 00 5c  |........trak...\|
    
000000c0  74 6b 68 64 00 00 00 07  00 00 00 00 00 00 00 00  |tkhd............|
    
000000d0  00 00 00 01 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    
000000e0  00 00 00 00 00 00 00 00  00 00 00 00 00 01 00 00  |................|
    
*
    
00000100  00 00 00 00 00 00 00 00  00 00 00 00 40 00 00 00  |............@...|
    
00000110  00 00 00 00 00 00 00 00  00 00 01 1d 6d 64 69 61  |............mdia|
    
00000120  00 00 00 20 6d 64 68 64  00 00 00 00 00 00 00 00  |... mdhd........|
    
00000130  00 00 00 00 00 00 03 e8  00 00 00 00 39 84 00 00  |............9...|
    
00000140  00 00 00 35 68 64 6c 72  00 00 00 00 00 00 00 00  |...5hdlr........|
    
00000150  73 75 62 74 00 00 00 00  00 00 00 00 00 00 00 00  |subt............|
    
00000160  55 53 50 20 53 75 62 74  69 74 6c 65 20 48 61 6e  |USP Subtitle Han|
    
00000170  64 6c 65 72 00 00 00 00  c0 6d 69 6e 66 00 00 00  |dler.....minf...|
    
00000180  0c 73 74 68 64 00 00 00  00 00 00 00 24 64 69 6e  |.sthd.......$din|
    
00000190  66 00 00 00 1c 64 72 65  66 00 00 00 00 00 00 00  |f....dref.......|
    
000001a0  01 00 00 00 0c 75 72 6c  20 00 00 00 01 00 00 00  |.....url .......|
    
000001b0  88 73 74 62 6c 00 00 00  3c 73 74 73 64 00 00 00  |.stbl.../www.|
    
000001e0  77 33 2e 6f 72 67 2f 6e  73 2f 74 74 6d 6c 00 00  |w3.org/ns/ttml..|
    
000001f0  00 00 00 00 10 73 74 74  73 00 00 00 00 00 00 00  |.....stts.......|
    
00000200  00 00 00 00 10 73 74 73  63 00 00 00 00 00 00 00  |.....stsc.......|
    
00000210  00 00 00 00 14 73 74 73  7a 00 00 00 00 00 00 00  |.....stsz.......|
    
00000220  00 00 00 00 00 00 00 00  10 73 74 63 6f 00 00 00  |.........stco...|
    
00000230  00 00 00 00 00 00 00 00  28 6d 76 65 78 00 00 00  |........(mvex...|
    
00000240  20 74 72 65 78 00 00 00  00 00 00 00 01 00 00 00  | trex...........|
    
00000250  01 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    
00000260  18 73 74 79 70 69 73 6f  36 00 00 00 00 69 73 6f  |.stypiso6....iso|
    
00000270  36 6d 73 64 68 00 00 00  28 66 72 65 65 55 53 50  |6msdh...(freeUSP|
    
00000280  20 62 79 20 43 6f 64 65  53 68 6f 70 11 11 11 11  | by CodeShop....|
    
00000290  11 11 11 11 11 11 11 11  11 11 11 11 11 00 00 00  |................|
    
000002a0  2c 73 69 64 78 00 00 00  00 00 00 00 01 00 00 03  |,sidx...........|
    
000002b0  e8 00 00 00 00 00 00 00  00 00 00 00 01 00 00 0f  |................|
    
000002c0  09 00 00 ea 60 90 00 00  00 00 00 00 68 6d 6f 6f  |....`.......hmoo|
    
000002d0  66 00 00 00 10 6d 66 68  64 00 00 00 00 00 00 00  |f....mfhd.......|
    
000002e0  01 00 00 00 50 74 72 61  66 00 00 00 14 74 66 68  |....Ptraf....tfh|
    
000002f0  64 00 02 00 02 00 00 00  01 00 00 00 01 00 00 00  |d...............|
    
00000300  14 74 66 64 74 01 00 00  00 00 00 00 00 00 00 00  |.tfdt...........|
    
00000310  00 00 00 00 20 74 72 75  6e 00 00 07 01 00 00 00  |.... trun.......|
    
00000320  01 00 00 00 70 00 00 ea  60 00 00 0e 99 02 80 00  |....p...`.......|
    
00000330  40 00 00 0e a1 6d 64 61  74 3c 3f 78 6d 6c 20 76  |@....mdat<?xml v|
    
00000340  65 72 73 69 6f 6e 3d 22  31 2e 30 22 20 65 6e 63  |ersion="1.0" enc|
    
00000350  6f 64 69 6e 67 3d 22 75  74 66 2d 38 22 3f 3e 3c  |oding="utf-8"?><|
    
00000360  74 74 20 78 6d 6c 6e 73  3d 22 68 74 74 70 3a 2f  |tt xmlns="http:/|
    
00000370  2f 77 77 77 2e 77 33 2e  6f 72 67 2f 6e 73 2f 74  |/www.w3.org/ns/t|
    
00000380  74 6d 6c 22 20 78 6d 6c  6e 73 3a 73 6d 70 74 65  |tml" xmlns:smpte|
    
00000390  3d 22 68 74 74 70 3a 2f  2f 77 77 77 2e 73 6d 70  |="http://www.smp|
    
000003a0  74 65 2d 72 61 2e 6f 72  67 2f 73 63 68 65 6d 61  |te-ra.org/schema|
    
000003b0  73 2f 32 30 35 32 2d 31  2f 32 30 31 30 2f 73 6d  |s/2052-1/2010/sm|

    I honestly have never seen anything like this before...

    So the command I’m running now is this :

    ffmpeg -y -i ’audionld#24000.mp4’ -i ’audionld#48000.mp4’ -i
    ’textnld.mp4’ -i ’video.mp4’ -map 0:a -map 1:a -map 2:d -map 3:v
    -metadata:s:a:0 language=nld -metadata:s:a:1 language=nld -acodec copy -bsf:a aac_adtstoasc -vcodec copy -c:d copy -movflags faststart "test.mp4" 2>&1

    Which results in this output :

    ffmpeg version 3.2.5-1~bpo8+1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 4.9.2 (Debian 4.9.2-10)
    
  configuration: --prefix=/usr --extra-version='1~bpo8+1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --disable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  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
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'audionld#24000.mp4':
    
  Metadata:
    
    major_brand     : iso6
    
    minor_version   : 0
    
    compatible_brands: iso6dash
    
  Duration: 00:03:06.07, start: 0.000000, bitrate: 64 kb/s
    
    Stream #0:0(nld): Audio: aac (HE-AAC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 62 kb/s (default)
    
    Metadata:
    
      handler_name    : USP Sound Handler
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'audionld#48000.mp4':
    
  Metadata:
    
    major_brand     : iso6
    
    minor_version   : 0
    
    compatible_brands: iso6dash
    
  Duration: 00:03:06.07, start: 0.000000, bitrate: 95 kb/s
    
    Stream #1:0(nld): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 93 kb/s (default)
    
    Metadata:
    
      handler_name    : USP Sound Handler
    
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'textnld.mp4':
    
  Metadata:
    
    major_brand     : iso6
    
    minor_version   : 0
    
    compatible_brands: iso6dash
    
  Duration: 00:03:05.76, bitrate: 0 kb/s
    
    Stream #2:0(nld): Data: none (stpp / 0x70707473), 0 kb/s (default)
    
    Metadata:
    
      handler_name    : USP Subtitle Handler
    
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
    
  Metadata:
    
    major_brand     : iso6
    
    minor_version   : 0
    
    compatible_brands: iso6dash
    
  Duration: 00:03:06.08, start: 0.000000, bitrate: 152 kb/s
    
    Stream #3:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 416x234 [SAR 1:1 DAR 16:9], 144 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : USP Video Handler
    
      encoder         : Elemental H.264
    
[mp4 @ 0x7f15299c4520] Could not find tag for codec none in stream #2, codec not currently supported in container
    
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argumentStream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #1:0 -> #0:1 (copy)
    
  Stream #2:0 -> #0:2 (copy)
    
  Stream #3:0 -> #0:3 (copy)
    
    Last message repeated 1 times

    This gives the error :
    Could not find tag for codec none in stream #2, codec not currently supported in container
    Could not write header for output file #0 (incorrect codec parameters ?) : Invalid argument

    So I tried playing with the map like this :

    -map 2:s
    ==> Gives me :
    Stream map ’2:s’ matches no streams.
    To ignore this, add a trailing ’ ?’ to the map.

    -map 2:s ?
    ==> Gives me no error, but the subtitle stream isn’t added into the final file.

    Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #1:0 -> #0:1 (copy)
    
  Stream #3:0 -> #0:2 (copy)

    Maybe I first have to convert the subtitle into srt or such, but for that I don’t find on google what type of file this is.

    Any help would be greatly appreciated !

    Thanks

    ---EDIT---

    Hereby the code that I am using to convert this in PHP :

      private function convert_TTML_subtitle_file($orig) {
    
    if ( $orig == '' || !file_exists($orig) ) {
    
      return false;
    
    }
    

    
    $f = file_get_contents($orig);
    
    $pos = stripos($f, '<tt xmlns="http://www.w3.org/ns/ttml" if="if" false="false" return="return" while="while">body->div->p as $p ) {
    
          $txt .= "{$counter}\r\n";
    
          $counter++;
    
          $txt .= $p['begin'] . ' --> ' . $p['end'] . "\r\n";
    
          $txt .= $p->span . "\r\n\r\n";
    
        }
    
      }
    
      $cur += $curSize;
    
    }
    

    
    $fname = tempnam(getcwd(), 'sub');
    
    file_put_contents($fname, $txt);
    
    return $fname;
    
  }
    
</tt>

  • Using ffmpeg and ffserver to create a 2x1 live stream fails with unconnected output error

    31 janvier 2021, par weevilknievel

    I want to combine 2 RTSP streams (CCTV cameras) into a horizontal 2x1 strip and convert to webm for use in a HTML5 webpage.

    &#xA;&#xA;

    I am able to convert the streams into an mpeg or avi file easily, but as soon as I try to post it to ffserver ffm feed, I hit a wall.

    &#xA;&#xA;

    Here is my working ffmpeg command which writes out to a file :

    &#xA;&#xA;

    ffmpeg -rtsp_transport tcp -thread_queue_size 12 -i "rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=1&amp;stream=1.sdp" -i "rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=2&amp;stream=1.sdp" -filter_complex "[0:v][1:v] hstack=inputs=2 [v]" -map "[v]" -r 30 output.mpg&#xA;

    &#xA;&#xA;

    It seems the ffmpeg process is outputting two streams and one of them is MPEG ? In the above command I had to put a frame rate "-r 30" into the command otherwise I got an error which said that MPEG 1/2 did not support a framerate of 5/1 ??

    &#xA;&#xA;

    As soon as I try and stream to ffserver, I get an error :

    &#xA;&#xA;

    ffmpeg -rtsp_transport tcp -thread_queue_size 12 -i "rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=1&amp;stream=1.sdp" -i "rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=2&amp;stream=1.sdp" -filter_complex "[0:v][1:v] hstack=inputs=2 [v]" -map "[v]" -r 30 http://localhost:8090/feed5.ffm&#xA;

    &#xA;&#xA;

    The error I get is "Filter hstack has an unconnected output" :

    &#xA;&#xA;

    ffmpeg version N-86111-ga441aa90e8-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers&#xA;  built with gcc 5.4.1 (Debian 5.4.1-8) 20170304&#xA;  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-5 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg&#xA;  libavutil      55. 63.100 / 55. 63.100&#xA;  libavcodec     57. 96.101 / 57. 96.101&#xA;  libavformat    57. 72.101 / 57. 72.101&#xA;  libavdevice    57.  7.100 / 57.  7.100&#xA;  libavfilter     6. 89.101 /  6. 89.101&#xA;  libswscale      4.  7.101 /  4.  7.101&#xA;  libswresample   2.  8.100 /  2.  8.100&#xA;  libpostproc    54.  6.100 / 54.  6.100&#xA;Input #0, rtsp, from &#x27;rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=1&amp;stream=1.sdp&#x27;:&#xA;  Duration: N/A, start: 0.166667, bitrate: N/A&#xA;    Stream #0:0: Video: h264 (High), yuv420p(progressive), 352x288, 6 fps, 6 tbr, 90k tbn, 180k tbc&#xA;Input #1, rtsp, from &#x27;rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=2&amp;stream=1.sdp&#x27;:&#xA;  Duration: N/A, start: 0.166667, bitrate: N/A&#xA;    Stream #1:0: Video: h264 (High), yuv420p(progressive), 352x288, 6 fps, 6 tbr, 90k tbn, 180k tbc&#xA;Filter hstack has an unconnected output&#xA;

    &#xA;&#xA;

    My ffserver conf is very basic :

    &#xA;&#xA;

    HTTPPort 8090&#xA;HTTPBindAddress 0.0.0.0&#xA;MaxHTTPConnections 2000&#xA;MaxClients 1000&#xA;MaxBandwidth 100000&#xA;CustomLog -&#xA;&#xA;<feed>&#xA;File /mnt/ramdisk/feed5.ffm&#xA;Truncate&#xA;FileMaxSize 5M&#xA;ACL allow 127.0.0.1&#xA;</feed>&#xA;&#xA;<stream>&#xA;     Format webm&#xA;     Feed feed5.ffm&#xA;     VideoCodec libvpx&#xA;     VideoSize 640x360&#xA;     NoAudio&#xA;   AVOptionVideo quality realtime&#xA;   StartSendOnKey&#xA;   VideoBitRate 140&#xA;</stream>&#xA;&#xA;<stream>&#xA;Format status&#xA;ACL allow localhost&#xA;ACL allow 192.168.0.0 192.168.255.255&#xA;</stream>&#xA;<redirect>&#xA;URL http://www.ffmpeg.org/&#xA;</redirect>&#xA;

    &#xA;&#xA;

    Edit :

    &#xA;&#xA;

    Here is the debug output from the ffmpeg command above :

    &#xA;&#xA;

    ffmpeg -v debug -rtsp_transport tcp -thread_queue_size 12 -i "rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=1&amp;stream=1.sdp" -i "rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=2&amp;stream=1.sdp" -filter_complex "[0:v][1:v] hstack=inputs=2 [v]" -map "[v]" -r 30 http://localhost:8090/feed5.ffm&#xA;ffmpeg version N-86111-ga441aa90e8-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers&#xA;  built with gcc 5.4.1 (Debian 5.4.1-8) 20170304&#xA;  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-5 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg&#xA;  libavutil      55. 63.100 / 55. 63.100&#xA;  libavcodec     57. 96.101 / 57. 96.101&#xA;  libavformat    57. 72.101 / 57. 72.101&#xA;  libavdevice    57.  7.100 / 57.  7.100&#xA;  libavfilter     6. 89.101 /  6. 89.101&#xA;  libswscale      4.  7.101 /  4.  7.101&#xA;  libswresample   2.  8.100 /  2.  8.100&#xA;  libpostproc    54.  6.100 / 54.  6.100&#xA;Splitting the commandline.&#xA;Reading option &#x27;-v&#x27; ... matched as option &#x27;v&#x27; (set logging level) with argument &#x27;debug&#x27;.&#xA;Reading option &#x27;-rtsp_transport&#x27; ... matched as AVOption &#x27;rtsp_transport&#x27; with argument &#x27;tcp&#x27;.&#xA;Reading option &#x27;-thread_queue_size&#x27; ... matched as option &#x27;thread_queue_size&#x27; (set the maximum number of queued packets from the demuxer) with argument &#x27;12&#x27;.&#xA;Reading option &#x27;-i&#x27; ... matched as input url with argument &#x27;rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=1&amp;stream=1.sdp&#x27;.&#xA;Reading option &#x27;-i&#x27; ... matched as input url with argument &#x27;rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=2&amp;stream=1.sdp&#x27;.&#xA;Reading option &#x27;-filter_complex&#x27; ... matched as option &#x27;filter_complex&#x27; (create a complex filtergraph) with argument &#x27;[0:v][1:v] hstack=inputs=2 [v]&#x27;.&#xA;Reading option &#x27;-map&#x27; ... matched as option &#x27;map&#x27; (set input stream mapping) with argument &#x27;[v]&#x27;.&#xA;Reading option &#x27;-r&#x27; ... matched as option &#x27;r&#x27; (set frame rate (Hz value, fraction or abbreviation)) with argument &#x27;30&#x27;.&#xA;Reading option &#x27;http://localhost:8090/feed5.ffm&#x27; ... matched as output url.&#xA;Finished splitting the commandline.&#xA;Parsing a group of options: global .&#xA;Applying option v (set logging level) with argument debug.&#xA;Applying option filter_complex (create a complex filtergraph) with argument [0:v][1:v] hstack=inputs=2 [v].&#xA;Successfully parsed a group of options.&#xA;Parsing a group of options: input url rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=1&amp;stream=1.sdp.&#xA;Applying option thread_queue_size (set the maximum number of queued packets from the demuxer) with argument 12.&#xA;Successfully parsed a group of options.&#xA;Opening an input file: rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=1&amp;stream=1.sdp.&#xA;[tcp @ 0x58fb5e0] No default whitelist set&#xA;[rtsp @ 0x58f9700] SDP:&#xA;v=0&#xA;o=- 38990265062388 38990265062388 IN IP4 192.168.1.132&#xA;a=range:npt=0-&#xA;m=video 0 RTP/AVP 96&#xA;c=IN IP4 0.0.0.0&#xA;a=rtpmap:96 H264/90000&#xA;a=framerate:0S&#xA;a=fmtp:96 profile-level-id=640014; packetization-mode=1; sprop-parameter-sets=Z2QAFK2EAQwgCGEAQwgCGEAQwgCEK1CwSyA=,aO48sA==&#xA;a=control:trackID=3&#xA;&#xA;Failed to parse interval end specification &#x27;&#x27;&#xA;[rtsp @ 0x58f9700] video codec set to: h264&#xA;[rtsp @ 0x58f9700] RTP Profile IDC: 64 Profile IOP: 0 Level: 14&#xA;[rtsp @ 0x58f9700] RTP Packetization Mode: 1&#xA;[rtsp @ 0x58f9700] Extradata set to 0x58fb940 (size: 38)&#xA;[rtsp @ 0x58f9700] setting jitter buffer size to 0&#xA;[rtsp @ 0x58f9700] hello state=0&#xA;[h264 @ 0x58fca00] nal_unit_type: 7, nal_ref_idc: 3&#xA;[h264 @ 0x58fca00] nal_unit_type: 8, nal_ref_idc: 3&#xA;[h264 @ 0x58fca00] nal_unit_type: 7, nal_ref_idc: 3&#xA;[h264 @ 0x58fca00] nal_unit_type: 8, nal_ref_idc: 3&#xA;[h264 @ 0x58fca00] unknown SEI type 229&#xA;[h264 @ 0x58fca00] nal_unit_type: 7, nal_ref_idc: 3&#xA;[h264 @ 0x58fca00] nal_unit_type: 8, nal_ref_idc: 3&#xA;[h264 @ 0x58fca00] nal_unit_type: 6, nal_ref_idc: 0&#xA;[h264 @ 0x58fca00] nal_unit_type: 5, nal_ref_idc: 3&#xA;[h264 @ 0x58fca00] unknown SEI type 229&#xA;[h264 @ 0x58fca00] Reinit context to 352x288, pix_fmt: yuv420p&#xA;[h264 @ 0x58fca00] nal_unit_type: 1, nal_ref_idc: 3&#xA;    Last message repeated 5 times&#xA;[h264 @ 0x58fca00] unknown SEI type 229&#xA;    Last message repeated 1 times&#xA;[rtsp @ 0x58f9700] All info found&#xA;[rtsp @ 0x58f9700] Setting avg frame rate based on r frame rate&#xA;Input #0, rtsp, from &#x27;rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=1&amp;stream=1.sdp&#x27;:&#xA;  Duration: N/A, start: 0.166667, bitrate: N/A&#xA;    Stream #0:0, 28, 1/90000: Video: h264 (High), 1 reference frame, yuv420p(progressive, left), 352x288, 0/1, 6 fps, 6 tbr, 90k tbn, 180k tbc&#xA;Successfully opened the file.&#xA;Parsing a group of options: input url rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=2&amp;stream=1.sdp.&#xA;Successfully parsed a group of options.&#xA;Opening an input file: rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=2&amp;stream=1.sdp.&#xA;[tcp @ 0x59f4280] No default whitelist set&#xA;[rtsp @ 0x59f7620] SDP:&#xA;v=0&#xA;o=- 38990265062388 38990265062388 IN IP4 192.168.1.132&#xA;a=range:npt=0-&#xA;m=video 0 RTP/AVP 96&#xA;c=IN IP4 0.0.0.0&#xA;a=rtpmap:96 H264/90000&#xA;a=framerate:0S&#xA;a=fmtp:96 profile-level-id=640014; packetization-mode=1; sprop-parameter-sets=Z2QAFK2EAQwgCGEAQwgCGEAQwgCEK1CwSyA=,aO48sA==&#xA;a=control:trackID=3&#xA;&#xA;Failed to parse interval end specification &#x27;&#x27;&#xA;[rtsp @ 0x59f7620] video codec set to: h264&#xA;[rtsp @ 0x59f7620] RTP Profile IDC: 64 Profile IOP: 0 Level: 14&#xA;[rtsp @ 0x59f7620] RTP Packetization Mode: 1&#xA;[rtsp @ 0x59f7620] Extradata set to 0x59f3670 (size: 38)&#xA;[rtp @ 0x59f62a0] No default whitelist set&#xA;[udp @ 0x58fb6a0] No default whitelist set&#xA;[udp @ 0x58fb6a0] end receive buffer size reported is 131072&#xA;[udp @ 0x591b940] No default whitelist set&#xA;[udp @ 0x591b940] end receive buffer size reported is 131072&#xA;[rtsp @ 0x59f7620] setting jitter buffer size to 500&#xA;[rtsp @ 0x59f7620] hello state=0&#xA;[h264 @ 0x59e4b20] nal_unit_type: 7, nal_ref_idc: 3&#xA;[h264 @ 0x59e4b20] nal_unit_type: 8, nal_ref_idc: 3&#xA;[h264 @ 0x59e4b20] nal_unit_type: 7, nal_ref_idc: 3&#xA;[h264 @ 0x59e4b20] nal_unit_type: 8, nal_ref_idc: 3&#xA;[h264 @ 0x59e4b20] unknown SEI type 229&#xA;[h264 @ 0x59e4b20] nal_unit_type: 7, nal_ref_idc: 3&#xA;[h264 @ 0x59e4b20] nal_unit_type: 8, nal_ref_idc: 3&#xA;[h264 @ 0x59e4b20] nal_unit_type: 6, nal_ref_idc: 0&#xA;[h264 @ 0x59e4b20] nal_unit_type: 5, nal_ref_idc: 3&#xA;[h264 @ 0x59e4b20] unknown SEI type 229&#xA;[h264 @ 0x59e4b20] Reinit context to 352x288, pix_fmt: yuv420p&#xA;[h264 @ 0x59e4b20] nal_unit_type: 1, nal_ref_idc: 3&#xA;    Last message repeated 5 times&#xA;[h264 @ 0x59e4b20] unknown SEI type 229&#xA;    Last message repeated 1 times&#xA;[rtsp @ 0x59f7620] All info found&#xA;[rtsp @ 0x59f7620] Setting avg frame rate based on r frame rate&#xA;Input #1, rtsp, from &#x27;rtsp://192.168.1.132:554/user=admin&amp;password=mypassword&amp;channel=2&amp;stream=1.sdp&#x27;:&#xA;  Duration: N/A, start: 0.166667, bitrate: N/A&#xA;    Stream #1:0, 28, 1/90000: Video: h264 (High), 1 reference frame, yuv420p(progressive, left), 352x288, 0/1, 6 fps, 6 tbr, 90k tbn, 180k tbc&#xA;Successfully opened the file.&#xA;detected 2 logical cores&#xA;[Parsed_hstack_0 @ 0x59f7cc0] Setting &#x27;inputs&#x27; to value &#x27;2&#x27;&#xA;Parsing a group of options: output url http://localhost:8090/feed5.ffm.&#xA;Applying option map (set input stream mapping) with argument [v].&#xA;Applying option r (set frame rate (Hz value, fraction or abbreviation)) with argument 30.&#xA;Successfully parsed a group of options.&#xA;Opening an output file: http://localhost:8090/feed5.ffm.&#xA;[http @ 0x59aa700] Setting default whitelist &#x27;http,https,tls,rtp,tcp,udp,crypto,httpproxy&#x27;&#xA;[http @ 0x59aa700] request: GET /feed5.ffm HTTP/1.1&#xA;User-Agent: Lavf/57.72.101&#xA;Accept: */*&#xA;Range: bytes=0-&#xA;Connection: close&#xA;Host: localhost:8090&#xA;Icy-MetaData: 1&#xA;&#xA;&#xA;[ffm @ 0x5917d00] Format ffm probed with size=2048 and score=101&#xA;[NULL @ 0x5bce3e0] Setting entry with key &#x27;video_size&#x27; to value &#x27;640x360&#x27;&#xA;[NULL @ 0x5bce3e0] Setting entry with key &#x27;b&#x27; to value &#x27;140000&#x27;&#xA;[NULL @ 0x5bce3e0] Setting entry with key &#x27;time_base&#x27; to value &#x27;1/5&#x27;&#xA;[NULL @ 0x5bce3e0] Setting entry with key &#x27;bt&#x27; to value &#x27;35000&#x27;&#xA;[NULL @ 0x5bce3e0] Setting entry with key &#x27;rc_eq&#x27; to value &#x27;tex^qComp&#x27;&#xA;[NULL @ 0x5bce3e0] Setting entry with key &#x27;maxrate&#x27; to value &#x27;280000&#x27;&#xA;[NULL @ 0x5bce3e0] Setting entry with key &#x27;bufsize&#x27; to value &#x27;280000&#x27;&#xA;[AVIOContext @ 0x5915b80] Statistics: 4096 bytes read, 0 seeks&#xA;[http @ 0x5915f00] Setting default whitelist &#x27;http,https,tls,rtp,tcp,udp,crypto,httpproxy&#x27;&#xA;[http @ 0x5915f00] request: POST /feed5.ffm HTTP/1.1&#xA;Transfer-Encoding: chunked&#xA;User-Agent: Lavf/57.72.101&#xA;Accept: */*&#xA;Connection: close&#xA;Host: localhost:8090&#xA;Icy-MetaData: 1&#xA;&#xA;&#xA;Successfully opened the file.&#xA;Filter hstack has an unconnected output&#xA;[AVIOContext @ 0x59ab080] Statistics: 0 seeks, 0 writeouts&#xA;

    &#xA;&#xA;

    I am stumped - any clues ?

    &#xA;&#xA;

    Thanks in advance.

    &#xA;

  • FFmpeg fontcolor_expr to dynamically change fontcolor over time

    26 juin 2017, par Matthew

    I’m using Fluent-FFmpeg with Node.JS to create videos with text overlaid on them and I’m wanting to change the color of the text as the video progresses.

    My filters follow this pattern :

    drawtext=enable='between(t,18.93,20.28)':fontfile=fonts/cousine-bold.ttf:fontsize=144:fontcolor_expr=%{expr\\\: if(between(t\\, 0\\, 20)\\, 888888\\, 111111)}:x=82:y=288:text='PROGRAMMING'

    And it prints out this stuff :

    ffmpeg version 3.3.2 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with Apple LLVM version 8.1.0 (clang-802.0.42)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libfreetype --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
    
  libavutil      55. 58.100 / 55. 58.100
    
  libavcodec     57. 89.100 / 57. 89.100
    
  libavformat    57. 71.100 / 57. 71.100
    
  libavdevice    57.  6.100 / 57.  6.100
    
  libavfilter     6. 82.100 /  6. 82.100
    
  libavresample   3.  5.  0 /  3.  5.  0
    
  libswscale      4.  6.100 /  4.  6.100
    
  libswresample   2.  7.100 /  2.  7.100
    
  libpostproc    54.  5.100 / 54.  5.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'uploads/0c719e39820366bc62c8fd66a6327828':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 0
    
    compatible_brands: qt  
    
    creation_time   : 2017-06-23T00:19:46.000000Z
    
    com.apple.quicktime.make: Apple
    
    com.apple.quicktime.model: MacBookPro9,2
    
    com.apple.quicktime.software: Mac OS X 10.12.5 (16F73)
    
    com.apple.quicktime.creationdate: 2017-06-22T17:18:42-0700
    
  Duration: 00:00:22.00, start: 0.000000, bitrate: 3408 kb/s
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 3091 kb/s, 15 fps, 15 tbr, 30k tbn, 50 tbc (default)
    
    Metadata:
    
      creation_time   : 2017-06-23T00:19:46.000000Z
    
      handler_name    : Core Media Data Handler
    
      encoder         : H.264
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 316 kb/s (default)
    
    Metadata:
    
      creation_time   : 2017-06-23T00:19:46.000000Z
    
      handler_name    : Core Media Data Handler
    
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
    
[libx264 @ 0x7ff72e810a00] using SAR=1/1
    
[libx264 @ 0x7ff72e810a00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0x7ff72e810a00] profile High, level 3.1
    
[libx264 @ 0x7ff72e810a00] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=6 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=1 b_bias=0     direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 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 './outputFile.mp4':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 0
    
    compatible_brands: qt  
    
    com.apple.quicktime.creationdate: 2017-06-22T17:18:42-0700
    
    com.apple.quicktime.make: Apple
    
    com.apple.quicktime.model: MacBookPro9,2
    
    com.apple.quicktime.software: Mac OS X 10.12.5 (16F73)
    
    encoder         : Lavf57.71.100
    
    Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 15 fps, 15360 tbn, 15 tbc (default)
    
    Metadata:
    
      creation_time   : 2017-06-23T00:19:46.000000Z
    
      handler_name    : Core Media Data Handler
    
      encoder         : Lavc57.89.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      creation_time   : 2017-06-23T00:19:46.000000Z
    
      handler_name    : Core Media Data Handler
    
      encoder         : Lavc57.89.100 aac
    
frame=   52 fps=0.0 q=27.0 size=      37kB time=00:00:04.66 bitrate=  65.7kbits/s speed=8.74x    
    
frame=   72 fps= 70 q=27.0 size=     187kB time=00:00:06.03 bitrate= 253.4kbits/s speed=5.83x    
    
frame=   95 fps= 61 q=27.0 size=     358kB time=00:00:07.52 bitrate= 390.4kbits/s speed=4.82x    
    
frame=  117 fps= 57 q=27.0 size=     569kB time=00:00:08.98 bitrate= 518.9kbits/s speed=4.35x    
    
frame=  137 fps= 53 q=27.0 size=     732kB time=00:00:10.32 bitrate= 580.2kbits/s speed=4.03x    
    
frame=  159 fps= 52 q=27.0 size=     942kB time=00:00:11.79 bitrate= 654.7kbits/s speed=3.84x    
    
frame=  180 fps= 50 q=27.0 size=    1110kB time=00:00:13.18 bitrate= 689.5kbits/s speed=3.67x    
    
frame=  204 fps= 50 q=27.0 size=    1331kB time=00:00:14.78 bitrate= 737.2kbits/s speed= 3.6x    
    
frame=  223 fps= 48 q=27.0 size=    1486kB time=00:00:16.06 bitrate= 757.9kbits/s speed=3.49x    
    
frame=  248 fps= 48 q=27.0 size=    1708kB time=00:00:17.71 bitrate= 789.7kbits/s speed=3.46x    
    
frame=  266 fps= 47 q=27.0 size=    1859kB time=00:00:18.92 bitrate= 805.0kbits/s speed=3.35x    
    
frame=  285 fps= 46 q=27.0 size=    2013kB time=00:00:20.19 bitrate= 816.4kbits/s speed=3.28x    
    
[drawtext @ 0x7ff72d84bc00] Cannot find color '888888.000000'
    
    Last message repeated 9 times
    
frame=  308 fps= 46 q=27.0 size=    2224kB time=00:00:21.75 bitrate= 837.5kbits/s speed=3.27x    
    
frame=  330 fps= 46 q=27.0 size=    2401kB time=00:00:21.96 bitrate= 895.5kbits/s speed=3.06x    
    
frame=  330 fps= 41 q=-1.0 Lsize=    2834kB time=00:00:22.00 bitrate=1055.0kbits/s speed=2.73x    
    
video:2484kB audio:338kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.441003%
    
[libx264 @ 0x7ff72e810a00] frame I:22    Avg QP:13.64  size: 47604
    
[libx264 @ 0x7ff72e810a00] frame P:154   Avg QP:16.76  size:  8574
    
[libx264 @ 0x7ff72e810a00] frame B:154   Avg QP:19.42  size:  1138
    
[libx264 @ 0x7ff72e810a00] consecutive B-frames:  6.7% 93.3%  0.0%  0.0%
    
[libx264 @ 0x7ff72e810a00] mb I  I16..4: 85.1% 13.3%  1.6%
    
[libx264 @ 0x7ff72e810a00] mb P  I16..4:  5.5%  3.1%  0.0%  P16..4: 41.5%  4.0%  5.5%  0.0%  0.0%    skip:40.4%
    
[libx264 @ 0x7ff72e810a00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8: 14.7%  0.1%  0.0%  direct: 4.7%  skip:80.4%  L0:28.0% L1:71.4% BI: 0.7%
    
[libx264 @ 0x7ff72e810a00] 8x8 transform intra:21.7% inter:84.8%
    
[libx264 @ 0x7ff72e810a00] coded y,uvDC,uvAC intra: 60.5% 98.6% 92.9% inter: 6.0% 24.3% 3.1%
    
[libx264 @ 0x7ff72e810a00] i16 v,h,dc,p: 35% 19% 43%  3%
    
[libx264 @ 0x7ff72e810a00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10%  7% 80%  1%  1%  1%  1%  0%  0%
    
[libx264 @ 0x7ff72e810a00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 20% 45%  0%  0%  0%  0%  0%  0%
    
[libx264 @ 0x7ff72e810a00] i8c dc,h,v,p: 77%  9% 10%  4%
    
[libx264 @ 0x7ff72e810a00] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x7ff72e810a00] ref P L0: 75.3%  0.3% 17.1%  7.3%
    
[libx264 @ 0x7ff72e810a00] ref B L0: 80.0% 20.0%
    
[libx264 @ 0x7ff72e810a00] kb/s:924.66
    
[aac @ 0x7ff72e812200] Qavg: 2159.960

    In particular this annoying bit :

    [drawtext @ 0x7ff72d84bc00] Cannot find color '888888.000000'

    However, it would be really nice to do something like this :

    fontcolor_expr=%{expr\\\\: if(between(t\\, 0\\, 20)\\, pink\\, white)}

    Which prints out this error :

    [Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid
    
frame=  287 fps= 46 q=27.0 size=    2023kB time=00:00:20.31 bitrate= 815.9kbits/s speed=3.27x    
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Undefined constant or missing '(' in 'pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] [Eval @ 0x7fff5f7760c0] Missing ')' or too many args in 'if(between(t,0,20),pink,white)'
    
[Parsed_drawtext_0 @ 0x7ff3cf523300] Expression 'if(between(t, 0, 20), pink, white)' for the expr text expansion function is not valid

    There aren’t a lot of examples of fontcolor_expr, so I wanted to see if anyone had experience with this. Any tips on changing fonrcolors dynamically without creating multiple filters ?

    Please note that fontcolor_expr=white and fontcolor_expr=888888 are valid and create videos with a fixed font color.

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