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• How to manually reset the offset of an mp4 video created from m4s files ?

  12 août 2020, par natdev

  I'm building a service that combine .m4s files (from a dash stream) to a mp4 video.
  
I have some sample m4s files from a random point in time of a stream,
  
using ffmpeg on those file + the init file does the job.

  


  cat init.mp4 032.m4s 033.m4s 034.m4s > output.mp4


  


  I have tried concating the m4s files to the mp4 init file and I manage to play the video,
  
but there is an offset from the encoded video segments.

  


  I guess ffmpeg does reset that somehow, and I was wondering how can I reset that offset as well ?
  
Having a little bit of experience with dash, I know that there is a field name presentationTimeOffset that is responsible to set the offset.

  


• Ffmpeg in docker-compose could not be started

  27 mai 2021, par indexlin

  

  



  

  



  I have the following docker-compose file but my ffmpeg container does not seem to start for some reason. It outputs a code of 0 and does not give any other info.

  



  version: '3'

networks:
  b2c:
    driver: bridge

services:
  ffmpeg:
    container_name: b2c-ffmpeg
    image: jrottenberg/ffmpeg

  nginx:
    container_name: b2c-nginx
    image: nginx:1.17.0
    depends_on:
      - "php"
    volumes:
      - ../server/public:/server/public
      - ./config/nginx/conf.d:/etc/nginx/conf.d
      - ./config/nginx/nginx.conf:/etc/nginx/nginx.conf
      - ../data/nginx/logs:/logs
    networks:
      - b2c
    ports:
      - "20001:80"

  php:
    container_name: b2c-php
    image: indexlin/gzyx-php7.2.4:1.1
    working_dir: /server
    volumes:
      - ../server:/server
      #- ./php/docker-php-ext-xdebug.ini:/usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
    networks:
      - b2c
    ports:
      - "23001:9000"
    #user: "1000:1000"

  mysql:
    container_name: b2c-mysql
    image: mysql:5.7.21
    environment:
      MYSQL_ROOT_PASSWORD: root
    volumes:
      - ../data/mysql/lib:/var/lib/mysql
      #- ../data/mysql/log:/var/log/mysql
      - ./config/mysql/mysqld.cnf:/etc/mysql/mysql.conf.d/mysqld.cnf
    networks:
      - b2c
    ports:
      - "25001:3306"

  redis:
    container_name: b2c-redis
    image: redis:5.0.5
    volumes:
      - ../data/redis:/data
      - ./config/redis/redis.conf:/usr/local/etc/redis/redis.conf
    networks:
      - b2c
    ports:
      - "27001:6379"

  node:
    container_name: b2c-node
    volumes:
      - ../server:/server
      - ../web:/web
    image: node:10.15.3
    networks:
      - b2c
    tty: true
    working_dir: /web
    ports:
      - "29001:29000"


  


• Forwarding rtsp feed from one local port to another

  11 août 2021, par Thabet Sabha

  so let's say I have an rtsp server running on port 554, and when a certain command is received, i want the rtsp server to start forwarding the feed (using rtsp+tcp) to a service running on the same machine but on port 553 (Linux OS), is that possible via a CL command, or do I have to use something like ffmpeg ?

  


  currently this is what is being used, but I feel like this is redundant since all we're doing is just forwarding the feed to another port on the same machine.

  


  const ffmpegOptions = [
"-rtsp_transport", "tcp",
"-i", "rtsp://127.0.0.1:554",
"-codec", "copy",
"-f", "rtsp",
"-rtsp_transport", "tcp",
"rtsp://127.0.0.1:553"
]

const myProcess = spawn('ffmpeg', ffmpegOptions);


  


  Thanks.