[FFmpeg-user] Overlay a video with a image at multiple offsets and of varying duration?

[Ryan Williams]

I suspect you have a syntax error in your filter_complex with use of double quotes.
Also your input/output pad mapping is incomplete.

give this a try -filter_complex "[0][1]overlay=enable='between(t,1,5)'[tmp]; [tmp][1]overlay=enable='between(t,10,20)'"

-----Original Message-----
From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of Garside, Vic
Sent: Thursday, 7 January 2016 11:39
To: ffmpeg-user at ffmpeg.org
Subject: [FFmpeg-user] Overlay a video with a image at multiple offsets and of varying duration?

Hi,

I'm trying to overlay an image on different parts of a video.  If I use a single overlay command it will overlay the image for the time period I pass in.

However, when I create a command line for FFMPEG that should overlay the image on the frames from 1-5 seconds and 10-20 seconds the command below fails with the error "Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_overlay_1".    I thought that filter chains take as input the previous filter's output but obviously not how I have constructed it.

How can I overlay the video with a  image at multiple offsets and varying duration?

Thanks,


ffmpeg -i adpod.mkv -i output.bmp -filter_complex "overlay=enable='between(t,1,5)'","overlay=enable='between(t,10,20)'" output.mp4

ffmpeg version N-67091-ge397edb Copyright (c) 2000-2014 the FFmpeg developers
  built on Oct 21 2014 22:01:56 with gcc 4.9.1 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil      54. 10.100 / 54. 10.100
  libavcodec     56.  8.102 / 56.  8.102
  libavformat    56.  9.101 / 56.  9.101
  libavdevice    56.  1.100 / 56.  1.100
  libavfilter     5.  2.100 /  5.  2.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Input #0, matroska,webm, from 'adpod.mkv':
  Metadata:
    ENCODER         : Lavf54.63.104
  Duration: 00:01:00.23, start: 0.200000, bitrate: 1163 kb/s
    Stream #0:0: Video: h264 (High), yuv420p, 768x432 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc
    Stream #0:1(eng): Audio: aac, 48000 Hz, stereo, fltp (default) Input #1, bmp_pipe, from 'output.bmp':
  Duration: N/A, bitrate: N/A
    Stream #1:0: Video: bmp, bgr24, 768x432, 25 tbr, 25 tbn, 25 tbc Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_overlay_1

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