This is a very interesting emboss and sepia effect for FFmpeg.
ffmpeg -i NOLm_Ambowide2_1207.mp4 -vf "curves=vintage,convolution=-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2" ambo.mp4 |
And this is a less noticeable version. But it still has a faint emboss effect.
ffmpeg -i NOLm_Ambowide2_1207.mp4 -vf "curves=vintage,convolution=-2 -1 0 -1 1 1 0 1 6:-2 -1 0 -1 1 1 0 1 6:-2 -1 0 -1 1 1 0 1 6:-2 -1 0 -1 1 1 0 1 9" ambo2.mp4 |
This version is negatively embossed, it looks quite good, this is an interesting effect.
ffmpeg -i NOLm_Ambowide2_1207.mp4 -vf "curves=vintage,convolution=-2 -1 0 -1 1 1 0 1 6:-2 -1 0 -1 1 1 0 1 6:-2 -1 0 -1 1 1 0 1 6:-2 -1 0 -1 1 1 0 1 9" ambo3.mp4 |
Below is an example of the above command`s output. This is a very cool sepia and embossing effect.
This is the FFmpeg command to encode this 5-second webm file.
ffmpeg -i ambo2.mp4 -c:v libvpx -b:v 3200k -t 5 -an -sn -copyts -threads 4 ambo.webm |
Putting the two filters together in one string is easily done.
curves=vintage,convolution=-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2
Place a comma betwixt each filter and they may be combined easily.