25 lines
813 B
Bash
25 lines
813 B
Bash
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#!/bin/bash
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VIDEO="$1"
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START="$2"
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DURATION="$3"
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ffmpeg -ss $START -i $VIDEO -t $DURATION -vf scale=640:-1 -vcodec h264 -an -strict -2 $VIDEO.mp4
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# encodage video vp9
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ffmpeg -ss $START -i $VIDEO -t $DURATION -vf scale=640:-1 -vcodec libvpx-vp9 -b:v 1M -an $VIDEO.webm
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# commande conseillé par Google
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#ffmpeg -i <source> -c:v libvpx-vp9 -pass 1 -b:v 1000K -threads 1 -speed 4 \
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# -tile-columns 0 -frame-parallel 0 -auto-alt-ref 1 -lag-in-frames 25 \
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# -g 9999 -aq-mode 0 -an -f webm /dev/null
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#ffmpeg -i <source> -c:v libvpx-vp9 -pass 2 -b:v 1000K -threads 1 -speed 0 \
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# -tile-columns 0 -frame-parallel 0 -auto-alt-ref 1 -lag-in-frames 25 \
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# -g 9999 -aq-mode 0 -c:a libopus -b:a 64k -f webm out.webm
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# créer une image à un temps t
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ffmpeg -i $VIDEO -ss $START -vf scale=640:-1 -vframes 1 $VIDEO.png
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