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• FFMPEG UDP output not working

  12 juillet 2017, par nameless

  I’m currently trying to send a video through ffmpeg to a udp stream. Therefore, I pipe a rawvideo directly into ffmpeg by ffmpeg.stdin.write(data). This are my options/parameters :

  var ffmpegArgs = [
  
      '-c:v', 'rawvideo',// input container
  
      '-f', 'rawvideo',
  
      '-pix_fmt', 'rgba', // input pixel format
  
      '-s', '600x600', //input size
  
      '-video_size', '600x600',
  
      '-i', 'pipe:0', // input source
  
      '-format', 'mpegts', // output container format
  
      '-c:v', 'libx264', // output video codec
  
      '-b:v', '2m', // output bitrate
  
      'udp://239.255.123.46:1234' // output destination
  
  ];

  What I’m wondering about is : when starting, I immediately get an error saying Unable to find a suitable output format for 'udp://239.255.123.46:1234', but when I put a filename there (to save the video) like video.mp4, the video is recorded and rendered all fine and I can open it after stopping.

  So why does the UDP streaming not work ? Any ideas ? When runnning FFMPEG directly from the commandline with a video and then use exactly that UDP stream address, everything is working completely fine.

  Whats the problem ?

• ffmpeg -i not working when converting media files to mp4

  14 août 2021, par outtobias0x9

  I'm using FFmpeg to convert my media file because It's a free source. But can't figure out how to use it. It takes one and a half hour just to troubleshoot but I totally messed up ! I went here to seek any help (I'm using windows 8.1 OS)

  


  I configure path

  


  command : ffmpeg -i invalid ? why ?

  


  It seems working

  


  i:no such file or directory ?

  


  I even tried New version 2021, but still "Missing argument for option 'i'

  


• FFmpeg drawtext not working on filter complex with watermark on php

  14 octobre 2018, par Groovekingg

  After I made a question of this topic i got a great answer from LordNeckbeard and appreciate for the help, but still the drawtext isn’t working, and can’t figure out what could possibly be wrong. So everything works if I omit drawtext=text=’hello’ on both of these lines, but once i add drawtext, no output.gif is created.

  $cmd1 = "$ffmpeg -ss 00:00:02 -t 00:00:02 -i $file_full_path -i $watermark -filter_complex '[0]fps=15,scale=200:113:flags=lanczos[bg];[bg][1]overlay=5:5,drawtext=text='hello',palettegen' $palette";
  
  $cmd2 = "$ffmpeg -ss 00:00:02 -t 00:00:02 -i $file_full_path -i $watermark -i $palette -filter_complex '[0]fps=15,scale=200:113:flags=lanczos[bg];[bg][1]overlay=5:5,drawtext=text='hello'[x];[x][2]paletteuse=dither=bayer:bayer_scale=3' -loop -1 output.gif";
  
  shell_exec($cmd1);
  
  shell_exec($cmd2);

  i have tried changing the single quotation marks to double, but nothing change. Also tried with exec(). Or is it possible that my server has a library missing and drawtext isn’t working because of this ?
  So I have tried to break down to check where it is wrong by simplifying the cmd to :

  $cmd1 = "$ffmpeg -i $file_full_path -ss 00:00:02 -t 00:00:02 -r 20 -vf scale=200:113,drawtext=text='hello' output.gif";

  and an output.gif file is created but 0bytes. what could it be ?

  Thanks to LordNeckbeard again for his answered on my previous post. Any answer would be of great help.