[FFmpeg-user] Combining xfade and drawtext

[Paul B Mahol]

On 9/12/22, Cecil Westerhof via ffmpeg-user <ffmpeg-user at ffmpeg.org> wrote:
> I am using xfade and drawtext without problems. But now I want to use
> both. But combining the two goes wrong.
>
> I use:
> ffmpeg -ss 308 -t 4 -i 00011-00016.MTS -ss 329 -to 374 -i 00011-00016.MTS
> -pix_fmt yuv420p -vcodec libx264 -crf 26 -acodec libmp3lame -qscale:a 9
> -preset veryfast -filter_complex
> 'xfade=transition=hlslice:duration=4:offset=0;acrossfade=d=4,drawtext=
>                          box        = 1:                         boxborderw
> = 6:                         boxcolor   = black at 0.2:
> fontcolor  = white at 0.4:                 fontfile   = FreeSerifBold.ttf:
>    fontsize   = 32:                        text       = © 2022 Cecil
> Westerhof - Cecil at Decebal.nl:             x          = ((main_w - text_w) /
> 2):   y          = main_h - (text_h * 2)    '
> xfadeMusicalTestTemp/accordeonmuziek.ts
>
> But this gives:
> ffmpeg version 4.3.4-0+deb11u1 Copyright (c) 2000-2021 the FFmpeg developers
>   built with gcc 10 (Debian 10.2.1-6)
>   configuration: --prefix=/usr --extra-version=0+deb11u1
> --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
> --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl
> --disable-stripping --enable-avresample --disable-filter=resample
> --enable-gnutls --enable-ladspa --enable-libaom --enable-libass
> --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio
> --enable-libcodec2 --enable-libdav1d --enable-libflite
> --enable-libfontconfig --enable-libfreetype --enable-libfribidi
> --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame
> --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus
> --enable-libpulse --enable-librabbitmq --enable-librsvg
> --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr
> --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora
> --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx
> --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2
> --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx
> --enable-openal --enable-opencl --enable-opengl --enable-sdl2
> --enable-pocketsphinx --enable-libmfx --enable-libdc1394 --enable-libdrm
> --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264
> --enable-shared
>   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, mpegts, from '00011-00016.MTS':
>   Duration: 01:31:13.52, start: 1.440000, bitrate: 16005 kb/s
>   Program 1
>     Metadata:
>       service_name    : Service01
>       service_provider: FFmpeg
>     Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B),
> yuv420p(top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50 tbr, 90k tbn,
> 50 tbc
>     Stream #0:1[0x101]: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz,
> stereo, fltp, 256 kb/s
> Input #1, mpegts, from '00011-00016.MTS':
>   Duration: 01:31:13.52, start: 1.440000, bitrate: 16005 kb/s
>   Program 1
>     Metadata:
>       service_name    : Service01
>       service_provider: FFmpeg
>     Stream #1:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B),
> yuv420p(top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50 tbr, 90k tbn,
> 50 tbc
>     Stream #1:1[0x101]: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz,
> stereo, fltp, 256 kb/s
> [Parsed_drawtext_2 @ 0x56143c223540] Using
> "/usr/share/fonts/truetype/ttf-bitstream-vera/Vera.ttf"
> [Parsed_acrossfade_1 @ 0x56143c5f9880] Media type mismatch between the
> 'Parsed_acrossfade_1' filter output pad 0 (audio) and the
> 'Parsed_drawtext_2' filter input pad 0 (video)

This above is pretty clear, drawtext is video filter and acrossfade is
audio filter.
It is not allowed to pass audio frames from audio only filter to video
input of video only filter.

> [AVFilterGraph @ 0x56143c54a500] Cannot create the link acrossfade:0 ->
> drawtext:0
> Error initializing complex filters.
> Invalid argument
> Command exited with non-zero status 1
>
>
> What am I doing wrong?
>
> --
> Cecil Westerhof
> Senior Software Engineer
> LinkedIn: http://www.linkedin.com/in/cecilwesterhof
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
>