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• Troubleshooting ffmpeg slideshow output corruption

  7 novembre 2020, par Hugh Walxet

  I'd been making single-image slideshows with ffmpegs for a long while without issue. Suddenly, sans any alteration to my previous install, the output from simple inputs like

  


  


  ffmpeg -r 1 -ss 00:00:17 -i "D :\x\y\z\a.flac" -i "C :\b\c\d\e.jpg" -b:v 1M -t 30 -map 0:a:0 -map 1:v:0 C :\f\g.mp4

  


  


  began giving me files that cannot be sent on any platform and which are unable to be played in VLC. I'm not really sure what's happening here. What diagnostics can I perform on the videos to pinpoint the issue ? This occurs with all image files, tested on jpg's, png's, etc. It has also not been solved by reinstalling ffmpeg, in a different location (and changing the environment variable path).

  


• Issue with openh264enc gstreamer plugin and tcp connections

  20 septembre 2016, par agaldos

  I am trying to stream over TCP encoded video into a EC2 Instance. Using "x264enc" encoder, all works correctly. I get the frames and generate the video correctly.

  The issue comes when I try to use the "openh264enc" encoder.

  If I put in the server "nc -l -p 5555" I can check that data is arriving into the port but when I put the pipeline goes to PREROLLING state and nothing more happens. If I cut the process in the sender, this message appears in the server :

  ubuntu@ip-172-31-87-56:~$ gst-launch-1.0 -e -v tcpserversrc host=ec2-52-29-128-23.eu-central-1.compute.amazonaws.com port=5555 ! h264parse ! mpegtsmux ! filesink location=file.ts
  
  Setting pipeline to PAUSED ...
  
  /GstPipeline:pipeline0/GstTCPServerSrc:tcpserversrc0: current-port = 5555
  
  Pipeline is PREROLLING ...
  
  ERROR: from element /GstPipeline:pipeline0/GstH264Parse:h264parse0: No valid frames found before end of stream
  
  Additional debug info:
  
  gstbaseparse.c(1281): gst_base_parse_sink_event_default (): /GstPipeline:pipeline0/GstH264Parse:h264parse0  
  
  ERROR: pipeline doesn't want to preroll.
  
  Setting pipeline to NULL ...
  
  /GstPipeline:pipeline0/GstTCPServerSrc:tcpserversrc0: current-port = 0
  
  Freeing pipeline ...

  Pipeline used in the EC2 Instance, the server :

  gst-launch-1.0 -e -v tcpserversrc host=ec2-52-29-128-23.eu-central-1.compute.amazonaws.com port=5555 ! h264parse ! mpegtsmux ! filesink location=file.ts

  Sender pipeline with x264enc :

  gst-launch-1.0 -e videotestsrc horizontal-speed=5 ! x264enc ! tcpclientsink port=5555 host=52.29.128.23

  Sender pipeline with openh264enc :

  gst-launch-1.0 -e videotestsrc horizontal-speed=5 ! openh264enc ! tcpclientsink port=5555 host=52.29.128.23

• nginx ffmpeg hls streaming filling up my hard drive

  19 avril 2020, par stefki

  I am using nginx and ffmpeg on my windows 10 machine. Everything works ok, but my hard drive keep filling up .
These are my command lines

  



  ffmpeg -i "http://192.168.1.2:9566/history/" -copytb 1 -filter_complex "[0:v][0:s:1]overlay[v];[v]pp=fd,scale=720:-1[y]" -map [y] -map 0:1 -s 720x576 -pix_fmt yuv420p -b:v 1800k -maxrate 2000k -bufsize 3000k -c:v libx264 -strict 2 -profile:v "main" -preset superfast  -acodec aac -ac 2 -ar 44100 -ab 128k -vsync 1 -async 1 -f hls -hls_time 5 -hls_list_size 6 -segment_wrap 10 -hls_flags delete_segments "D:\media\hls\history.m3u"


  



  The HLS segments goes to D :\media\hls
This drive D : is ok, it's not filling up.

  



  But the C :\ partition is filling up all the time.

  



  the ffmpeg.exe is executed from Folder :
C :\Users\Stefki\Desktop\ffmpeg-latest-win64-static (1)\ffmpeg-latest-win64-static\bin

  



  VLC play link http://192.168.2.254/hls/history.m3u OK

  



  Thank you to all, I hope any experienced dev can help me :)

  



  This is my nginx config file

  



  worker_processes 1 ;

  



  events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
        }
         location /hls {
            types {
                application/vnd.apple.mpegurl m3u8;
                video/mp2t ts;
            }
            root D:/media;
            add_header Cache-Control no-cache;
            }