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youtube-dl wrapper script to download DASH Video and Audio and combine it with ffmpeg with automatic best format detection and fallback to default youtube-dl behaviour for videos without DASH
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#!/usr/bin/env bash | |
set -e | |
YOUTUBE_FORMATS=$(youtube-dl -F "$1") | |
if [[ "$YOUTUBE_FORMATS" == *"(DASH Video)"* ]]; then | |
VIDEO_NAME=$(youtube-dl --get-filename "$1") | |
VIDEO_NAME_TMP="$VIDEO_NAME.tmp" | |
echo "Filename: $VIDEO_NAME" | |
if [ -e "$VIDEO_NAME" ]; then | |
echo "File already exists, aborting..." | |
exit | |
fi | |
# Strip dashes from the beginning of the ID to avoid command line errors | |
VIDEO_ID=`youtube-dl --get-id "$1" | sed "s/^-/_/"` | |
VIDEO_FORMAT=`echo "$YOUTUBE_FORMATS" | fgrep "DASH video" | grep "137\|136" | head -n 1` | |
VIDEO_FORMAT_ID=`echo "$VIDEO_FORMAT" | cut -d ' ' -f 1` | |
VIDEO_FORMAT_NAME=`echo "$VIDEO_FORMAT" | cut -f 4,5` | |
AUDIO_FORMAT=`echo "$YOUTUBE_FORMATS" | fgrep "audio only" | sort -r | head -n 1` | |
AUDIO_FORMAT_ID=`echo "$AUDIO_FORMAT" | cut -f 1` | |
AUDIO_FORMAT_NAME=`echo "$AUDIO_FORMAT" | cut -f 4,5` | |
echo "Using formats: $VIDEO_FORMAT_NAME, $AUDIO_FORMAT_NAME" | |
youtube-dl -f $VIDEO_FORMAT_ID -o "${VIDEO_ID}.vid" "$1" | |
youtube-dl -f $AUDIO_FORMAT_ID -o "${VIDEO_ID}.aud" "$1" | |
echo -n "Combining files..." | |
ffmpeg -i "$VIDEO_ID.vid" -i "$VIDEO_ID.aud" -c copy -f mp4 -v warning \ | |
"$VIDEO_NAME_TMP" | |
rm "$VIDEO_ID".* | |
mv "$VIDEO_NAME_TMP" "$VIDEO_NAME" | |
echo " done!" | |
else | |
youtube-dl "$1" | |
fi |
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