Streaming from a Pi

shuffle.py

import os
import random

path="music/"
files = [f for f in os.listdir(path) if os.path.isfile(os.path.join(path, f))]
print("Nombre de musiques: {}".format(len(files)))
random.shuffle(files)
data="\n".join(["file '{}{}'".format(path,file) for file in files])

with open("list.txt","w") as concat_file:
    concat_file.write(data)

twitch.sh

#!/bin/bash

# =================================================================
# Stream configuration file for Raspberry Pi Camera
#
# @author Russell Feldhausen (russfeldh@gmail.com)
# @version 2019-06-05
# Modified by RedBlaze42
# This set of commands should allow you to stream video from your 
# Raspberry Pi Camera to Twitch and Youtube (and possibly other
# RTMP endpoints) with decent quality and performance.
#
# You may need to install raspivid and/or ffmpeg to use this script.
# 
# This was tested and built on Raspbian 9 installed using Noobs
# =================================================================


# Set width and height of output video
WIDTH=1296
HEIGHT=972

# Set output framerate
FRAMERATE=30

# Set keyframe spacing (must be double the framerate)
KEYFRAME=60

# Set bitrate (Twitch recommends 3500000)
BITRATE=3000000

# Set stream URL
URL=GOOGLE "TWITCH STREAM SERVER URL"

# Set stream key
KEY=YOUR KEY

# Command
while :
do
python3 shuffle.py
raspivid -n -t 0 --sharpness 0 -a 8 -ae 32,0xff,0x808000 -a "Bird Cam twitch.tv/redblaze %d/%m %X" -w $WIDTH -h $HEIGHT -fps $FRAMERATE -b $BITRATE -g $KEYFRAME -o - | ffmpeg  -f lavfi -i anullsrc -f concat -i list.txt -c:a aac -r $FRAMERATE -i - -g $KEYFRAME -strict experimental -threads 4 -vcodec copy -t 24:00:00 -filter:a "volume=-19dB" -map 1:a -map 2:v -b:v $BITRATE -preset fast -r $FRAMERATE -f flv "${URL}/${KEY}"
sleep 60
done
#sudo shutdown -r +2

# =================================================================
# Full Documentation of Command Options
# 
# +++ raspivid +++
# -n = no preview window
# -t = time to capture (0 to disable, which allows streaming)
# -w = video width
# -h = video height
# -fps = output framerate (max 30 for 1080p, 60 for 720p)
# -b = bitrate
# -g = keyframe rate (refresh period)
# -o - = output to stdout (allows piping to ffmpeg)
#
# +++ ffmpeg +++
# -f lavfi = use lavfi filter (see note below)
# -i anullsrc = grab blank input (see note below)
# -c:a aac = set audio codec to aac
# -r = output framerate (should match raspivid framerate)
# -i - = read input from stdin (piped from ffmpeg)
# -g = keyframe rate (refresh period)
# -strict experimental = allow nonstandard things
# -threads 4 = set number of encoding threads to 4 (# of cores)
# -vcodec copy = use video as-is (do not re-encode video)
# -map 0:a = use the audio from input 0 (see note below)
# -map 1:v = use the video from input 1 (raspivid)
# -b:v = bitrate
# -preset ultrafast = use the ultrafast encoding preset
# -f flv = set output format to flv for streaming
# "${URL}/{KEY}" = specify RTMP URL as output for stream
#
# ** NOTE **
# According to some information online, YouTube will reject a live
# stream without an audio channel. So, in the ffmpeg command above
# a blank audio channel is included. It was not required for Twitch
# in my testing. 
# =================================================================