Unix for Artists: Fun with FFMPEG is a workshop hosted by the Echo Park Film Center.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

74 lines
1.6 KiB

#!/bin/bash -e
#####################################################
#
# Youtube: https://trac.ffmpeg.org/wiki/Encode/YouTube
# Vimeo: https://vimeo.zendesk.com/hc/en-us/articles/360056550451-Video-and-audio-compression-guidelines
#
# Usage: bash ffmpeg/basic/social.sh <input video>
#
#####################################################
INPUT=`realpath "${1}"`
FILENAME=`basename "${INPUT}"`
FILE="${FILENAME%.*}"
INPUTDIR=`dirname "${INPUT}"`
if [ "${INPUT}" == "" ]; then
echo "Please provide an input video as your first argument"
exit 1
fi
YOUTUBE="${INPUTDIR}/${FILE}-youtube.mkv"
VIMEO="${INPUTDIR}/${FILE}-vimeo.mkv"
TWITTER="${INPUTDIR}/${FILE}-twitter.mp4"
INSTAGRAM="${INPUTDIR}/${FILE}-instagram.mp4"
# Encode a video for YouTube
ffmpeg -i "${INPUT}" \
-vcodec libx264 \
-preset slow \
-vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" \
-pix_fmt yuv420p \
-crf 12 \
-c:a aac \
-b:a 192k \
"${YOUTUBE}"
# Encode a video for Vimeo using the
# recommended settings for 720p video
ffmpeg -i "${INPUT}" \
-vcodec libx264 \
-preset slow \
-pix_fmt yuv420p \
-profile:v main \
-b:v 7500k \
-minrate 5000k \
-maxrate 10000k \
-c:a aac \
-ar 48000 \
"${VIMEO}"
# Encode video for Twitter
ffmpeg -i "${INPUT}" \
-pix_fmt yuv420p \
-vcodec libx264 \
-acodec aac \
-vb 2048k\
-minrate 1024k \
-maxrate 4096k \
-bufsize 1024k \
-ar 44100 \
-ac 2 \
-strict experimental \
"${TWITTER}"
# Crop and encode for Instagram
ffmpeg -i "${INPUT}" \
-vf "crop=w='min(iw\,ih)':h='min(iw\,ih)',setsar=1" \
-framerate 30 \
-vcodec mpeg4 \
-vb 8000k \
-strict experimental \
-q:v 0 \
"${INSTAGRAM}"