ogv-togif.sh input-file.ogv [output-file.gif]
ouput.gifthe script requires ffmpeg.
on debian it can be installed using backport in source.list https://superuser.com/questions/286675/how-to-install-ffmpeg-on-debian/1082858#1082858?newreg=e97452bd68ba4059b71be5731b1eb775
| #!/bin/bash | |
| # from Dawid Drozd http://unix.stackexchange.com/a/298656/187922 | |
| inputFile=$1 | |
| [ -z $2 ] && outputFile=output.gif || outputFile=$2 | |
| FPS=15 | |
| WIDTH=640 | |
| CMD=ffmpeg | |
| PALETTE_PATH=/tmp/ogv-to-gif_palette.png | |
| #Generate palette for better quality | |
| $CMD -i $inputFile -vf fps=$FPS,scale=$WIDTH:-1:flags=lanczos,palettegen $PALETTE_PATH | |
| #Generate gif using palette | |
| $CMD -i $inputFile -i $PALETTE_PATH -loop 0 -filter_complex "fps=$FPS,scale=$WIDTH:-1:flags=lanczos[x];[x][1:v]paletteuse" $outputFile | |
| rm $PALETTE_PATH |