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• FFMPEG Stream via UDpxy and HDMI Grabber

  4 mars 2020, par Fabian Schäfer

  We use a HDMI Grabber and the manual from here : https://blog.danman.eu/reverse-engineering-lenkeng-hdmi-over-ip-extender/
  You can find the Script here : https://gist.github.com/danielkucera/0a2f36bc53959e4879cb567149aafb78

  Now we want to grab the Stream via FFMPEG and UDPxy to TVHeadEnd. But FFMPEG produces some Error as you can see below.

  FFMPEG Configuration :

  sudo ./recvlkv373.py 226.2.2.2 2068 /dev/stdout | ffmpeg -re -i pipe: -c:v h264 -c:a copy -f mpegts udp://239.0.0.1:1234

  [mjpeg @ 0x5578d5a232e0] error count: 73e1c90ea5aa3699
  
  [mjpeg @ 0x5578d5a232e0] error y=80 x=15
  
  frame=  746 fps= 25 q=28.0 size=     229kB time=00:00:27.48 bitrate=  68.2kbits/s speed=0.922frame=  758 fps= 25 q=28.0 size=     231kB time=00:00:27.96 bitrate=  67.7kbits/s speed=0.923frame=  771 fps= 25 q=28.0 size=     234kB time=00:00:28.48 bitrate=  67.2kbits/s speed=0.924frame=  783 fps= 25 q=28.0 size=     236kB time=00:00:28.96 bitrate=  66.7kbits/s speed=0.925frame=  796 fps= 25 q=25.0 size=     242kB time=00:00:29.48 bitrate=  67.2kbits/s speed=0.926frame=  809 fps= 25 q=28.0 size=     291kB time=00:00:30.00 bitrate=  79.5kbits/s speed=0.928frame=  821 fps= 25 q=28.0 size=     294kB time=00:00:30.48 bitrate=  79.1kbits/s speed=0.928frame=  834 fps= 25 q=28.0 size=     298kB time=00:00:31.00 bitrate=  78.8kbits/s speed=0.93xframe=  847 fps= 25 q=28.0 size=     301kB time=00:00:31.52 bitrate=  78.1kbits/s speed=0.931[mjpeg @ 0x5578d5a232e0] error count: 65b697ff00611d13
  
  [mjpeg @ 0x5578d5a232e0] error y=0 x=45
  
  frame=  859 fps= 25 q=28.0 size=     303kB time=00:00:32.00 bitrate=  77.5kbits/s speed=0.932frame=  872 fps= 25 q=28.0 size=     309kB time=00:00:32.52 bitrate=  77.8kbits/s speed=0.933[mjpeg @ 0x5578d5a232e0] error count: 6464e73ce47d9ba1e
  
  [mjpeg @ 0x5578d5a232e0] error y=73 x=10
  
  [mjpeg @ 0x5578d5a232e0] mjpeg_decode_dc: bad vlc: 0:0 (0x5578d5a2a328)
  
  [mjpeg @ 0x5578d5a232e0] error dc
  
  [mjpeg @ 0x5578d5a232e0] error y=74 x=38
  
  [mjpeg @ 0x5578d5a232e0] error count: 64cd4eab52d7b5de8

  When I do it Step by Step (Save the File via the Script and then transcode with FFMPEG) everything works fine.
  When I use a Pipe the Video Quality is bad with flicker.
  It only runs rudimentary good when I use a buffer, a crf higher than 35 and Youtube with Speed 0.25.

  First, it runs on a Raspberry Pi 3, now it is on a dedicated server. Is it possible that the Server still has not enough Power for it or is FFmpeg just limited ?
  OS : Ubuntu
  CPU : i7-3770k
  RAM : 8GB DDR3
  Graphic : Quadro M4000
  

  Have you some suggestions about what to change, that the stream would run better ?

• Connect FFServer multiple instances

  3 mars 2020, par absentio

  I am trying to deploy FFServer on Kubernetes and try to use the power of distributed systems.
  It’s the first time I am using both and so I am a bit confused.
  Got my Kubernetes setup working on my bare metal server, LoadBalancer and CNI are working flawlessly. I then created an FFServer deployment and a FFServer service. Then I made an NFS storage to share ffserver.conf and feed files, but there is something strange happening.

  All my ffserver k8s pods load the ffserver.conf file with not problem, then when I start to stream using ffmpeg the loadbalancer gives my stream to one of my server(i’ll call it pod1). The problem is that I can get the stream played if connecting directly to pod1 but will not work if i try to get it from pod2 although pod2 could read the feed.ffm written from pod1.

  NFS storage is setup with ReadWriteMany. How could I get it to work ? Is there any way to use multiple ffserver without having to ffmpeg to all of them one by one ?

• Invalid data found when processing input on ffmpeg m4s to mp4 transfer

  1er mars 2020, par keith scott

  The result of the power shell window

  I saw a post on here about converting m4s to mp4 and I have followed the steps of concatenating all the files into another m4s file that I called all.m4s and when I use the command ffmpeg -i allm4s.m4s -c copy video.mp4. I made the combined m4s file by coding an exe to add all the m4s files that have the word video in them to the m4s file. Here is the source code written in c# if you compile the code then that is the code I have used to make the m4s

  using System;
  
  using System.Collections.Generic;
  
  using System.Linq;
  
  using System.Text;
  
  using System.Threading.Tasks;
  
  using System.IO;
  
  
  
  namespace files
  
  {
  
      class Program
  
      {
  
          static void Main(string[] args)
  
          {
  
              string dir = Directory.GetCurrentDirectory();
  
              string[] info = Directory.GetFiles(dir);
  
              Console.WriteLine(dir + "\\allm4s.m4s");
  
              Console.ReadKey();
  
              foreach (string name in info)
  
              {
  
                  if (Path.GetFileName(name).Contains(".m4s") && Path.GetFileName(name).Contains("video"))
  
                  {
  
                      using (Stream srcStream = File.OpenRead(name))
  
                      {
  
                          using (Stream destStream = File.OpenWrite(dir+"\\allm4s.m4s"))
  
                          {
  
                              srcStream.CopyTo(destStream);
  
                              Console.WriteLine(destStream+name);
  
                          }
  
                      }
  
                  }
  
              }
  
              Console.ReadKey();
  
          }
  
      }
  
  }

  I think if there is to be an issue it is to do with this allm4s.m4s file as the file size is about 1.5mb even though each segment m4s is about 750kb each and there are quite a lot.If anyone has a way of adding concatenating lots of files together through a program/application that would be useful.