[FFmpeg-user] Overlay images to frames in video

[Rainer M Krug]

Hi

First poster, o apologies for any forgotten info.


I have a video with the following metadata:

```
$ ffprobe ./1.pre-processed.data/bemovi/20210208_00097.avi
ffprobe version 4.3.2 Copyright (c) 2007-2021 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.2_4 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
  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, avi, from './1.pre-processed.data/bemovi/20210208_00097.avi':
  Metadata:
    encoder         : Lavf58.45.100
  Duration: 00:00:12.50, start: 0.000000, bitrate: 91831 kb/s
    Stream #0:0: Video: png (PNG  / 0x20474E50), pal8(pc), 2048x2048, 92565 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc
    Metadata:
      title           : FileAVI write  
```

In addition, I have 125 images (jpg, but I can as easily create them as png) which contain some labelling of the individual frames. The particles are moving, the images are different.

Now I want to overlay the images over the corresponding frames.

What is the easiest to do this? I could convert them to a move, then overlay these two, but I have the feeling I could do this in one step?

Any suggestions?

Thanks,

Rainer



--
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

Orcid ID: 0000-0002-7490-0066

Department of Evolutionary Biology and Environmental Studies
University of Zürich
Office Y34-J-74
Winterthurerstrasse 190
8075 Zürich
Switzerland

Office:	+41 (0)44 635 47 64
Cell:       	+41 (0)78 630 66 57
email:      Rainer.Krug at uzh.ch
		Rainer at krugs.de
Skype:     RMkrug

PGP: 0x0F52F982



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