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• c/c++ program for ffmpeg command line

  25 mars 2015, par Yoohoo

  I want to find the corresponding c/c++ program for the ffmpeg command line :

  ffmpeg -i sample.mp4 -an -vcodec libx264 -crf 23 outfile.h264

  which convert a sample.mp4 file to outfile.h264, and

  ffplay outfile.h264

  What I am doing is to combine the ffmpeg program with my udp socket program to do a real-time video transmission. beacause it is ’real-time’, so I want to find the ffmpeg program cut it at the frame encoding step instead of writing the frames into output file, and send frame by frame and also read frame by frame at the server side.

  My questions are :

  1.What c/c++ program is actually running when I use the above command line ?

  2.where can i find the c/c++ program ?

• wowza + live + ffmpeg + hls player, how to create the playlist.m3u8 ?

  9 mai 2018, par Ziv Barber

  I’m trying to setup a wowza live test server and then I can play hls from my mobile app. It do work without any problem for vod. I can play it in my app. I can also see the .m3p8 file if I enter this uri in the browser.
  I tried to do the same in live mode (my goal is to test some streaming parameters for live streaming). I tried to use ffmpeg to create the live stream :

  ffmpeg -re -i "myInputTestVideo.mp4" -vcodec libx264 -vb 150000 -g 60 -vprofile baseline -level 2.1 -acodec aac -ab 64000 -ar 48000 -ac 2 -vbsf h264_mp4toannexb -strict experimental -f mpegts udp ://127.0.0.1:10000

  I created a "source file" and connected it to the "Incoming Streams".
  I can see in my application’s Monitoring / Network tab that it do getting the data from ffmpeg.

  My problem is how to get the playlist.m3p8 file so I can play it from inside my app (hls based) ?

  Again, for now I need a way to test playing with the streaming settings and in real live I’ll have a real live streaming source.

• Making a movie from the url using ffmpeg and phantomjs

  1er novembre 2016, par Matt

  Im Taking screen shots from a url, using phantomjs using the setIntreval function (25 right now) and then piping the output to the ffmpeg (Using the frame rate -r 24).
  Here is the Code. ffmpeg.js

  var page = require('webpage').create();
  
  page.viewportSize = { width: 1024, height: 768 };
  
  
  
  page.open('http://ewoken.github.io/Leaflet.MovingMarker/', function () {
  
    setInterval(function() {
  
      page.render('/dev/stdout', { format: "png" });
  
    }, 25);
  
  });

  Then I run the script using this.

  phantomjs ffmpeg.js | ffmpeg -y -c:v png -f image2pipe -r 24 -t 10 -i - -c:v libx264 -pix_fmt yuv420p -movflags +faststart output.mp4

  Like In the command Im getting the 10 sec video with the page, But Its all speeding up fast first and completely freezes with a last frame.

  Can you guys help me, with a work around, enabling me to record the page , AS IS ? Like if there is a 3000 delay animation in the movie, It should appear like real in the movie, like smooth and in real time.

  Thank you guys. Stuck on this for a long time now.

  Cheers,