Lattice 0 lattice0

About YUV formats

First of all: YUV pixel formats and Recommended 8-Bit YUV Formats for Video Rendering. Chromium's source code contains good documentation about those formats too: chromium/src/media/base/video_types.h and chromium/src/media/base/video_frame.cc (search for RequiresEvenSizeAllocation(), NumPlanes() and those kinds of functions).

YUV?

You can think of an image as a superposition of several planes (or layers in a more natural language). YUV formats have three planes: Y, U, and V.

Y is the luma plane, and can be seen as the image as grayscale. U and V are reffered to as the chroma planes, which are basically the colours. All the YUV formats have these three planes, and differ by the different orderings of them.

AnnexB format:

([start code] NALU) | ( [start code] NALU) |

AVCC format:

([extradata]) | ([length] NALU) | ([length] NALU) |

OK, so today I was looking at Writer monad, a very basic Monad.

In its essence, it's just a Monad that outputs (e.g. log) something,
The "Variation three: Output" Monad from the original Monads for functional programming, 92 paper is very lean:

type M a = (Output, a)
type Output = String

Referência RTSP para Câmeras IP, DVRs e NVRs

Documento consolidado de endpoints RTSP conhecidos para câmeras IP, DVRs e NVRs.

Importante: endpoints RTSP podem variar conforme modelo, linha, OEM, firmware e região. Não assuma que um endereço funciona para todos os equipamentos de uma mesma marca.

Tabela-resumo RTSP

Homeassistant IR codes for Samsung Smart TV

IR codes came from here

code was adapted from here

run:

python3 ir_codes.py ./samsung_tv_codes.csv

	#!/bin/sh

	# Inspired by https://gist.github.com/daktak/f887352d564b54f9e529404cc0eb60d5

	ip() { qvm-ls --raw-data ip -- "$1"; }
	netvm() { qvm-prefs -g -- "$1" netvm; }

	forward() {
	local from_domain=$1
	local to_domain=$2

	/** A fragment shader to convert NV12 to RGB.
	* Input textures Y - is a block of size w*h.
	* texture UV is of size w*h/2.
	* Remember, both U and V are individually of size w/2*h/2, but they are interleaved.
	* The layout looks like this :
	* ----------
	* \| \|
	* \| Y \| size = w*h
	* \| \|
	* \|________\|

	First go here:

	https://wiki.codeaurora.org/xwiki/bin/QAEP/release

	This site gives information about all msm soc release details with tag + android version

	Search your msm here.. Check the latest one and look for correct android version and mark that tag.

	Now open one of the following links (dependent on your linux kernel version)

	#Give an IP address in the range of the camera to the eth0 interface
	sudo ip address add 192.168.1.133/24 dev eth0

	#First, scan the eth0 interface to find all the IPs connected to it
	nmap -e eth0 192.168.1.0/24

	#Now that you found the camera's IP, scan which ports are open to find the HTTP port (suupose the IP is ...189)
	nmap -e eth0 192.168.1.104 -p 0-65535

	#SSH and foward the HTTP port of the discovered camera