4

I have downloaded a number of video clips they are in a format called .webp. How do I convert them to .gif? A chat room I use frequently only allows .gif and .jpeg files.

I've done something like this before but it was ages ago and I can't remember what to do.

andrew.46
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rhubarbdog
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2 Answers2

2

I got this to work by modifying a script by Sean Mahan that appears to have been intended for Arch Linux I simply quoted the variables (otherwise it failed under Ubuntu 18.04.5 LTS). Here's the Ubuntu script I used. This could be further modified to include checking to insure all dependencies are installed (and optionally installing them if not).

#!/bin/bash

DELAY="${DELAY:-10}"
LOOP="${LOOP:-0}"
r=realpath "$1"
d=dirname "$r"
pushd "$d" > /dev/null
f=basename "$r"
n=webpinfo -summary "$f" | grep frames | sed -e 's/.* \([0-9]*\)$/\1/'
dur=webpinfo -summary "$f" | grep Duration | head -1 | sed -e 's/.* \([0-9]*\)$/\1/'


if (( "$dur" > 0 )); then
    DELAY = "$dur"
fi


pfx=echo -n $f | sed -e 's/^\(.*\).webp$/\1/'
if [ -z "$pfx" ]; then
    pfx="$f"
fi


echo "converting "$n" frames from "$f" 
working dir "$d"
file stem "$pfx""


for i in $(seq -f "%05g" 1 "$n")
do
    webpmux -get frame "$i" "$f" -o "$pfx"."$i".webp
    dwebp "$pfx"."$i".webp -o "$pfx"."$i".png
done


convert "$pfx"..png -delay "$DELAY" -loop "$LOOP" "$pfx".gif
rm "$pfx".[0-9].png "$pfx".[0-9]*.webp
popd > /dev/null
exit

Solution dependencies:

  1. webp package 2.imagemagick package 3.and of course bash
Elder Geek
  • 36,752
1

Python batch convert utility. Based on above contribution.
Requires creating a global webp-to-gif executable with Elder Geek's Sean Mahan code...

#!/usr/bin/env python3
# -*- coding: utf8 -*-
print( "####################################################" )
print( "Uses webp-to-gif to convert multiple..." )
print( "Converts all found if no regex provided             " )
print( "args: [group regex: optional] [path: optional]      " )
print( "                                                    " )
print( "####################################################" )

import sys, os, fnmatch, itertools
import re


args = [x.replace('\', '') for x in list(sys.argv)];  args.pop(0)
if len(args) == 1: args = args[0].split(' ')


print()
print()
print( "---------------------------------" )
print( "           Begin...              " )
print( "---------------------------------" )
print()
print()


regex = r'(.*).webp'
path = '.'
if len(args):
    regex = args[0]
    if len(args)>1:
        path = args[1]


os.chdir(path)
nn = 0
for f in os.listdir('.'):
    m = re.match(regex, f)
    if m:
        fn, e = os.path.splitext(f)
        os.system('webp-to-gif %s %s' % (f, '%s.gif' % (fn))) 
        print( '- Done for "%s"' % f )
        nn += 1


print()
print()
print( '---------------------------------' )
print( "%i matched" % nn )
print() 
print()
print( "---------------------------------" )
print( "             Done                " ) 
print( "---------------------------------" )
print() 
print()
Mayou Nkensa
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