sfahadshahzad

FFmpeg streaming

These are some ffmpeg command lines used when developing VHS dubbing controller.

HLS Stream (on Linux)

#!/bin/bash

# Stream a PAL 50i capture, cropped and de-interlaced using ffmpeg

FFmpeg build for NVIDIA & Intel hardware on Ubuntu 18.04LTS+:

Build platform: Ubuntu 18.04LTS

Goals: Generate an FFmpeg build that can utilize NVENC hardware acceleration on NVIDIA-based systems on Ubuntu 18.04LTS+.

First steps:

Purge all NVIDIA drivers first:

Gstreamer Pipeline Samples
Media File

Send RTMP - bitmovin sample:

ffmpeg -re -f lavfi -i color=black:640x480:rate=ntsc,format=yuv420p -g 6 -r ntsc \
-b:v 5M -minrate:v 5M -maxrate:v 5M -bufsize:v 1M -preset ultrafast \
-vcodec libx264  -r ntsc -tune zerolatency  -muxrate 8M  \
-pcr_period 40 -f flv rtmp://live-input.bitmovin.com/streams/a1142cd9-69b0-45d2-a655-a6c980b806c5

Grabar multicast:

Gstreamer Pipeline Samples

Table of Contents:

Gstreamer Pipeline Samples
- Tips for Debug
- Video
  - display test video
  - record to file
record and display at the same time(queue)

	# To extract the sound from a video and save it as MP3:
	ffmpeg -i <video.mp4> -vn <sound>.mp3

	# To convert frames from a video or GIF into individual numbered images:
	ffmpeg -i <video.mpg\|video.gif> <frame_%d.png>

	# To combine numbered images (frame_1.jpg, frame_2.jpg, etc) into a video or GIF:
	ffmpeg -i <frame_%d.jpg> -f image2 <video.mpg\|video.gif>

	# To quickly extract a single frame from a video at time mm:ss and save it as a 128x128 resolution image:

	@echo off

	:: Configuration Variables
	set "ifName=Ethernet 2"
	set "ipAddress=10.88.167.35"
	set "subnetMask=255.255.255.240"
	set "vlanID=702"

	:: set "defaultGateway=x.x.x.x"
	:: set "primaryDNS=x.x.x.x"

	@echo off

	:: Set duration in seconds
	set duration=20
	:: Temporary loop TS file to create
	set loopfile=svc%1.ts
	set "overlaytext=ABC-%2 / LTN"

	:: Create the loop file
	ffmpeg.exe ^

	@echo off

	:: Set duration in seconds
	set duration=10
	:: Temporary loop TS file to create
	set loopfile=loop.mkv
	:: Target mpegts URL (ESCAPE &s with ^!!! and add double quotes)
	:: see https://www.ffmpeg.org/ffmpeg-protocols.html#udp for full syntax
	set "target=udp://239.0.0.1:1234?ttl=13^&pkt_size=1316"

	#!/bin/bash


	ffmpeg -re -analyzeduration 100M -probesize 100M -stream_loop -1 -i <input_file.ts> \
	-vf setdar=16/9 -f decklink -pix_fmt uyvy422 -format_code pal "DeckLink Mini Monitor"