leandromoreira

# command to generate dhparams.pen
# openssl dhparam -out /etc/nginx/conf.d/dhparams.pem 2048

limit_conn_zone $binary_remote_addr zone=conn_limit_per_ip:10m;
limit_req_zone $binary_remote_addr zone=req_limit_per_ip:10m rate=5r/s;
limit_req_status 444;
limit_conn_status 503;

proxy_cache_path /var/lib/nginx/proxy levels=1:2 keys_zone=backcache:8m max_size=50m;
proxy_cache_key "$scheme$request_method$host$request_uri$is_args$args";

leandromoreira

ffmpeg -f lavfi -i 'testsrc2=size=1280x720:rate=60,format=yuv420p' \
  -f lavfi -i 'sine=frequency=440:sample_rate=48000:beep_factor=4' \
  -c:v libx264 -preset ultrafast -tune zerolatency -profile:v high \
  -b:v 1400k -bufsize 2800k -x264opts keyint=120:min-keyint=120:scenecut=-1 \
  -c:a aac -b:a 32k -f flv rtmp://transcoder/encoder/colorbar

leandromoreira

struct Codec
{
	*int (*encode)(*int);
	*int (*decode)(*int);
};


*int h264_encode(int *bytes)
{
// ...

leandromoreira

function [ref_ii, ref_jj, blk_residual] = block_match(blk, frame)

% frame and block dimensions
[H, W] = size(frame);
blk_size = size(blk, 1);

ref_ii = 1;
ref_jj = 1;
err = (255 ^ 2) * (blk_size ^ 2);
blk_residual = 255 * ones(blk_size, blk_size);

leandromoreira

% it creates a simple gray image (4x4)
I = [255, 255, 30, 100 
    255, 50, 90, 20 
    70, 70, 20, 10 
    100, 20, 10, 0];
% it converts it to grayscale
I = mat2gray(I);
% shows it 
imshow(I);

leandromoreira

package main

import (
	"crypto/hmac"
	"crypto/sha256"
	"encoding/hex"
	"fmt"
)

func main() {

leandromoreira

val = "a0192faa0"

function string.pack(str)
    local packed_string = ""    for i=1, #str, 2 do
        local hex_number = tonumber("0x" .. str:sub(i,i) .. str:sub(i+1,i+1))
        packed_string = packed_string .. string.char(hex_number)
    end    return packed_string
end

leandromoreira

if ngx.var.remote_addr == "192.168.0.253" then
  return ngx.exit(ngx.HTTP_FORBIDDEN)
end

leandromoreira

ffmpeg -y -hide_banner -re  -t 00:00:10 \
  -f lavfi -i 'testsrc2=size=1280x720:rate=60,format=yuv420p' \
  -filter_complex "[0:v]fps=1,split=2[out1][out2]" \
  -map "[out1]" \
    -vcodec libwebp \
    -lossless 1 \
    -preset photo \
    -threads 1 \
    pixx/thumb%9d.webp \
  -map "[out2]" \

leandromoreira

ffmpeg -i small_bunny_1080p_60fps.mp4 -i 2s.mkv  -filter_complex signature=detectmode=full:nb_inputs=2 -f null -