./ffmpeg -txt_format bitmap -txt_chop_top 0 -txt_duration 5000 -txt_page 881,882,883,884,885,886 -i Star\ Trek.m2t -map 0:0 -t 30 -y -v verbose -vcodec bmp ./bitmaps/tb%03d.bmp
ffmpeg version N-50824-gd73f062706-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-libgme --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-libsrt --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. 36.100 / 56. 36.100
  libavcodec     58. 62.100 / 58. 62.100
  libavformat    58. 35.100 / 58. 35.100
  libavdevice    58.  9.101 / 58.  9.101
  libavfilter     7. 66.100 /  7. 66.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[mpegts @ 0x73f1d00] parser not found for codec dvb_teletext, packets or times may be invalid.
[libzvbi_teletextdec @ 0x73f7b00] page filter: 881,882,883,884,885,886
[mpegts @ 0x73f1d00] parser not found for codec dvb_teletext, packets or times may be invalid.
[libzvbi_teletextdec @ 0x73f7b00] page filter: *
[mpeg2video @ 0x73f8e40] Invalid frame dimensions 0x0.
    Last message repeated 10 times
[mpegts @ 0x73f1d00] max_analyze_duration 5000000 reached at 5000011 microseconds st:0
[mpegts @ 0x73f1d00] PES packet size mismatch
    Last message repeated 2 times
Input #0, mpegts, from '/home/shadow/DVB/aufheben_für_Logos_usw/Star Trek.m2t':
  Duration: 02:39:34.88, start: 35931.138033, bitrate: 3742 kb/s
  Program 17501
    Stream #0:0[0x21](deu,deu): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006), 492x250
    Stream #0:1[0x1ff]: Video: mpeg2video (Main), 1 reference frame ([2][0][0][0] / 0x0002), yuv420p(tv, top first, left), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:2[0x200](deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 192 kb/s (clean effects)
    Stream #0:3[0x203](deu): Audio: ac3 ([6][0][0][0] / 0x0006), 48000 Hz, 5.1(side), fltp, 384 kb/s (clean effects)
Automatic encoder selection failed for output stream #0:0. Default encoder for format image2 (codec none) is probably disabled. Please choose an encoder manually.
Error selecting an encoder for stream 0:0
[AVIOContext @ 0x73fa8c0] Statistics: 1757328 bytes read, 2 seeks