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• Combining Video and Audio of different length in bulk

  27 avril 2017, par user2981223

  I am going through a tv series right now and editing the files to be to my liking. I have one set which has the video I want and one set that has the audio. I have a batch file that I can run that takes the video from every file in folder "A" and the audio from every file in folder "B" and outputs it to a folder named "output." But with this particular series, that is only half of what I need done.

  At the end of every episode of the files in the "B" folder there are some extra things. What I would like to do is take the audio and video from "A" and the audio from "B", combine it all into one file and also take the "A" and "B" files, compare the time stamps, and add the extra video from "B" to the output file.

  Let me put it another way. Let’s say "A" is 1080p with Japanese audio and is 20 minutes long. Let’s say "B" is 720p with English audio and is 23 minutes long. I want the whole 1080p video with both audio tracks, plus the 720p video spliced onto the end. Both files start at the same spot so syncing isn’t an issue. The issue is that the difference in time is different for every episode. So some episodes are 3 minutes longer, some only 30 seconds. Is there a way to make ffmpeg or another tool look at the difference in times and just add the excess to the output file ?

  Sorry for being long winded. Thanks for any help and guidance.

• avformat/gifdec : switch to using gif parser

  20 mai 2023, par Paul B Mahol

  avformat/gifdec : switch to using gif parser
  Update fate test, more correct as last packet is not truncated.
  

  • [DH] libavcodec/gifdec.c
  • [DH] libavformat/gifdec.c
  • [DH] tests/ref/fate/gif-demux

• Nginx RTMP module not creating .m3u8 in correct format

  24 juin 2024, par Moiz Hassan

  I am creating a rtmp server using nginx-rtmp-module inside a docker container. Using OBS I can connect with the server to start a live stream. M3U8 and .ts files are being created successfully but the .m3u8 file isn't in format I want. The generated .m3u8 file is like :

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-MEDIA-SEQUENCE:5
#EXT-X-TARGETDURATION:10


  


  but I want to generate .m3u8 file so it is simialr to this :

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-PLAYLIST-TYPE:VOD
#EXTINF:10.000000,
0.ts
#EXTINF:10.000000,
1.ts
#EXTINF:10.000000,
2.ts
#EXTINF:10.000000,
3.ts
#EXTINF:10.000000,
4.ts
#EXTINF:10.000000,
5.ts



  


  . The following is the nginx config that I am using :

  


  user root;
worker_processes  auto;
#error_log  logs/error.log;

events {
    worker_connections  1024;
}

# RTMP configuration
rtmp {
    server {
        listen 1935; # Listen on standard RTMP port
        chunk_size 4000; 
        # ping 30s;
        # notify_method get;

        # This application is to accept incoming stream
        application live {
            live on; # Allows live input

            
            push rtmp://localhost:1935/show;    
            drop_idle_publisher 10s; 
        }

        # This is the HLS application
        application show {
            live on; # Allows live input from above application
            deny play all; # disable consuming the stream from nginx as rtmp

            
            hls on; # Enable HTTP Live Streaming
            hls_fragment 10;
            hls_playlist_length 0;
            hls_path /mnt/hls/;  # hls fragments path
            hls_nested on;

            hls_fragment_naming sequential;
            
            hls_cleanup off;
                    
        }


    }
}


http {
    sendfile off;
    tcp_nopush on;
    directio 512;
    # aio on;
    
    # HTTP server required to serve the player and HLS fragments
    server {
        listen 8080;
        
        # Serve HLS fragments
        location /hls {
            types {
                application/vnd.apple.mpegurl m3u8;
                video/mp2t ts;
            }
            
            root /mnt;

            add_header Cache-Control no-cache; # Disable cache
            
            # CORS setup
            add_header 'Access-Control-Allow-Origin' '*' always;
            add_header 'Access-Control-Expose-Headers' 'Content-Length';
            
            # allow CORS preflight requests
            if ($request_method = 'OPTIONS') {
                add_header 'Access-Control-Allow-Origin' '*';
                add_header 'Access-Control-Max-Age' 1728000;
                add_header 'Content-Type' 'text/plain charset=UTF-8';
                add_header 'Content-Length' 0;
                return 204;
            }
        }
        
        # Serve DASH fragments
        location /dash {
            types {
                application/dash+xml mpd;
                video/mp4 mp4;
            }

            root /mnt;
            
            add_header Cache-Control no-cache; # Disable cache


            # CORS setup
            add_header 'Access-Control-Allow-Origin' '*' always;
            add_header 'Access-Control-Expose-Headers' 'Content-Length';

            # Allow CORS preflight requests
            if ($request_method = 'OPTIONS') {
                add_header 'Access-Control-Allow-Origin' '*';
                add_header 'Access-Control-Max-Age' 1728000;
                add_header 'Content-Type' 'text/plain charset=UTF-8';
                add_header 'Content-Length' 0;
                return 204;
            }
        }       
        
        # This URL provides RTMP statistics in XML
        location /stat {
            rtmp_stat all;
            rtmp_stat_stylesheet stat.xsl; # Use stat.xsl stylesheet 
        }

        location /stat.xsl {
            # XML stylesheet to view RTMP stats.
            root /usr/local/nginx/html;
        }

    }
}