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Add start time and duration parameters #4

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Add start time and duration parameters #4

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8 changes: 4 additions & 4 deletions gifenc.sh
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Original file line number Diff line number Diff line change
@@ -1,12 +1,12 @@
#!/bin/sh

if test $# -lt 4; then
if test $# -lt 6; then
cat <<-EOH
$0: Script to generate animated gifs easily from command line.

Usage:

$0 input.(mp4|avi|webm|flv|...) output.gif horizontal_resolution fps
$0 input.(mp4|avi|webm|flv|...) output.gif horizontal_resolution fps start_time duration
EOH
exit 1
fi
Expand All @@ -15,7 +15,7 @@ palette="$(mktemp /tmp/ffmpeg2gifXXXXXX.png)"

filters="fps=$4,scale=$3:-1:flags=lanczos"

ffmpeg -v warning -i "$1" -vf "$filters,palettegen" -y "$palette"
ffmpeg -v warning -i "$1" -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y "$2"
ffmpeg -v warning -ss "$5" -t "$6" -i "$1" -vf "$filters,palettegen" -y "$palette"
ffmpeg -v warning -ss "$5" -t "$6" -i "$1" -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y "$2"

rm -f "$palette"