Casting YouTube Videos from Tablet

#!/bin/bash

############################################################################################## 
#	
#	     Script:  ytplay.sh
#	     Author:  Iain Benson
#	     Desc:    Stream Youtube & other sites using omxplayer (HW acceleration)
#                 Caters for Playlists as well as single URLs.
#
#        Some Notes:
#                 *Sound*
#                 omxplayer doesn't use ALSA or Raspi config setting, but detects automagically
#                 Can force with -o flag that has options: hdmi, local, both
#
#                 *Launch from Phone (via Share manu)*
#                 Use Termux.  Create script in bin called 'termux-url-opener'
#                 Leave it to that script to kill existing ytplay instances
#
#        Dependencies:
#                 omxplayer
#                 youtube-dl
#                 jq
#                 A Raspberry Pi :)
#
############################################################################################## 

# Warning: going to use colour. Sunglasses on.
RED='\033[0;31m'
NO_COL='\033[0m'

PlayVid()
{
	# Fetch 'real' video link (-g) and title (-e) with youtube-dl
	# If specify diff audio/video streams they're not being multiplexed (ffmpeg issue?) => No sound
	# Use old youtube-dl behaviour specifying only quality results in single file - See github page.
	# Try for mp4 first (so wont get vp9).  If no mp4 then default to best that is avilable.
	clear; echo "Fetching video info"
	TITLEURL=$(youtube-dl -e  -g -f 'mp4[height <=? 720]/best[height <=? 720]' "$1")

	# Sometimes title is followed by newline which breaks sed regex
	FIXEDTITLEURL=$(echo $TITLEURL | tr '\n' ' ' | tr '\r' ' ')

	# Title followed by link.  Split on http
	LINK=$(echo $FIXEDTITLEURL | sed 's/.*http/http/')
	TITLE=$(echo $FIXEDTITLEURL | sed 's/http.*//')

	# Output Title to shell
	clear; echo -e "Playing: ${RED}$TITLE${NO_COL}"

	# omx (hidden) -b option clears sides of video for 3:4 vids as terminal was visible
	omxplayer -b "$LINK"
}


# Determine if playing single video or playlist
if [[ $1 = *"list="* ]]; then

	echo "Reading Youtube Playlist."

	# Issue with url containing watch not working.  fix it
	FIXED=$(echo "$1"|sed 's/watch.\+list=/playlist?list=/g')

	# If playlist download with youtube-dl it as json
	PLAYLIST_JSON=$(youtube-dl -j --flat-playlist "$FIXED" )
	
	# All on same line.  Split onto separate for easy processing. Note \n doesn't work.
	PLAYLIST_JSON=$(echo $PLAYLIST_JSON | sed 's/} {/}\r{/g')

	# For loop uses whitespace.  Use Internal File Separator to use \r instead
	IFS=$'\r'
	for line in $PLAYLIST_JSON
	do
		# Get the Title and Url.  Use jq to process json
		#TITLE=$(echo $line | jq -r '.title')
		URL=$(echo $line | jq -r '.url')

		# Create Url(web url not extracted omx compatable one) from id and play using our function above
		PlayVid "https://www.youtube.com/watch?v=$URL"

		# Once video ends, give user ability to quit out of playlist
		echo -e "${RED}"
		read -p "Press q to quit playlist " -t 2 -n 1 key <&1
		echo -e "${NO_COL}"
		if [[ $key = q ]] ; then
			break
		fi

	done

else

	# Easy, Playing Single Video
	PlayVid "$1"

fi

#!/data/data/com.termux/files/usr/bin/bash

# Kill off existing ytplay instances on the Raspberry Pi
ssh pi@raspberrypi "pgrep ytplay && killall ytplay.sh; exit"
clear

# Play video using ytplay script on the pi via ssh
# -t option is essential to force pseudo terminal - as gives keyboard control
ssh pi@raspberrypi -t "/home/pi/bin/ytplay.sh \"$1\""