datavudeja

Stream.sh

stream.sh is a Bash script designed to stream multiple video sources to multiple screens using ffplay. This script ensures that each video stream is displayed on a specified monitor and restarts the stream if it fails. The script is optimized for real-time playback by using various ffplay options to reduce latency and handle frame drops effectively.

Features

Streams multiple video sources to multiple screens.
Ensures each stream is displayed on the specified monitor.
Restarts streams automatically if they fail.
Optimized for real-time playback with minimal latency.

mostly from the url here:

https://stackoverflow.com/questions/24961127/how-to-create-a-video-from-images-with-ffmpeg

-pattern_type glob

This great option makes it easier to select the images in many cases.

Normal speed video with one image per frame at 30 FPS

Send video file as clip

How to use this:

Prepare your video file by using the clip metadata snippet in the Requirement section below.
Press Ctrl+Shift+I to open DevTools and copy everything in Main Function section.

Note

If there is nothing poping up, you can:

Download the ptb client, or
Use this to enable DevTools on stable client.

Raspberry Pi Media Server Setup

How to setup Pi to serve RGB and Thermal footage from cameras.

We're using the Logitech webcam c270 and Seek Compat for RGB and Thermal respectively.

1. Setup RTSP Server

Download mediamtx binary from: https://github.com/bluenviron/mediamtx/releases Latest version is v1.8.3 as of writing, change it accordingly.

ffmpeg: pad silence to the end of an audio file

https://superuser.com/questions/579008/add-1-second-of-silence-to-audio-through-ffmpeg

ffmpeg -f lavfi -i anullsrc=sample_rate=$input_Hz -t $seconds silence.mp3

input.txt:

VideoCompressor - Quick Start Guide

GitHub Gist: https://gist.github.com/emilwojcik93/868fbc801667e65e334679fec62b6879

TLDR - Two Simple Commands

Step 1: Download script to profile directory

$profileDir = Split-Path $PROFILE -Parent; if(!(Test-Path $profileDir)){md $profileDir -Force}; iwr 'https://gist.githubusercontent.com/emilwojcik93/868fbc801667e65e334679fec62b6879/raw/VideoCompressor.ps1' -OutFile "$profileDir\VideoCompressor.ps1" -UseBasicParsing

How to Make a 24h Music Livestream

Stream video and audio file in loop for youtube, using FFmpeg. FFmpeg will get the job done with 2 vCPUs in this scenario (I tried with 1 vCPU on lightsail, and buffering was a frequent occurance there). Since this is a 24/7 program, paying hourly would be unsustainable. In order to avoid that, a 2vCPU VPS is what you are looking for.

Contabo and OneTSolutions are good providers for this specific VPS use case.

1. Buy cheapest VPS you can

Carefully choose your plans, test your stream locally before to calculate specifically your requirements. Using the -listen option in ffmpeg and ffplay command are great for testing locally.

	# Add a subtitle to a video, set the language=eng, make it the default subtitle and store it as mkv
	# $1 = video file, $2 = subtitle file
	ffmpeg -i "$1" -i "$2" -map 0 -map 1 -metadata:s:0 language=eng -c copy -disposition:s:0 default "$1.mkv"`

	# Add a subtitle to a video, copy just one audio stream, set metadata language=eng for the subtitle, make it the default one and store it as mkv
	ffmpeg -i "$1.mp4" -i "$1.srt" -map 0 -map 1 -map -0:a:0 -c copy -metadata:s:s:0 language=eng -disposition:s:0 default "$1.mkv"

	# Scale down every file to H265 720p using Intel QSV hardware encoding
	find . -type f -exec ffmpeg -i {} -c:v hevc_qsv -s 1280x720 -global_quality 20 -c:a copy -c:s copy {}.mkv \; && find . ! -name '.mkv.mkv' -exec rm {} \; && rename 's/.mkv.mkv/.mkv/'

	# Downloads the video and coverts to audio, then clips it from $start to $stop time and saves as $file
	# The time formats must be "hh:mm:ss" and are relative to the beginning of the source video.
	$youtubeUrl = "https://www.youtube.com/watch?v=T6SyM0Kw6GA"
	$start = "00:00:36"
	$stop = "00:04:55"
	$file = "clip"

	$youtube_id = [regex]::new("[^/=]+$").Match($youtubeUrl).Value
	md $youtube_id -ErrorAction SilentlyContinue
	cd $youtube_id

	import os
	import json
	import requests
	from pdf2image import convert_from_path
	from pydub import AudioSegment
	from pydub.utils import make_chunks
	import subprocess
	import time

	# Configuration