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• How to permanently make ffmpeg recognizable from bin/bash in macOS

  10 avril 2022, par Anonymous

  I downloaded a zip for ffmpeg, because brew installation was not compatible with macOS High Sierra 10.13.6. After unzipping, the only file contained was ffmpeg, its icon is similar to the icon of the terminal. I want to get the terminal(which runs bin/bash $SHELL) to permanently recognise ffmpeg command.

  


  If I type :

  


  

  1. echo export PATH="/Users/imac/Documents/ffmpeg:$PATH" > ~/.bashrc

  


  2. source ~/.bashrc

  


  3. ffmpeg
then the command ffmpeg is recognized, so everything is ok.

  


  


  However if I exit the terminal and re-open it, or just restart the computer
ffmpeg gives as output -bash: ffmpeg: command not found. So I have to do every time steps 1 and 2 that were describe above.

  


  


  4. Output of cat .bashrc :
export PATH=/Users/imac/Documents/ffmpeg:/Library/Frameworks/Python.framework/Versions/3.9/bin:/Library/Frameworks/Python.framework/Versions/3.10/bin:/opt/anaconda3/condabin:/Library/Frameworks/Python.framework/Versions/3.9/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin

     


  


  5. Output of echo $PATH :
/Library/Frameworks/Python.framework/Versions/3.9/bin:/Library/Frameworks/Python.framework/Versions/3.10/bin:/opt/anaconda3/condabin:/Library/Frameworks/Python.framework/Versions/3.9/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin

     


  


  


  Note that in step 4 ffmpeg appears(in the location I have it stored) whereas in step 5 ffmpeg is absent. Also I have little knowledge of bash and terminal, so if you can, please be explanatory in answers and/or comments. Thank you very much !

  


• Using ffmpeg with MAMP local server

  22 mai 2012, par dirk_22

  In my MAMP local server home folder on Mac OS X (htdocs), I have a bunch of images (labeled image0 through image(n)) which I would like to stitch together into a jpeg using ffmpeg. When I type the following command into terminal, a .mpg file is successfully generated.

  ffmpeg -f image2 -i image%d.jpg videofile.mpg

  However, when I try to execute the same command using the php code pasted below, nothing seems to happen.

  <?php
  
  shell_exec('ffmpeg -f image2 -i image%d.jpg videofile.mpg');
  
  ?>

  I've copied the installed ffmpeg folder on my home directory into htdocs, but ffmpeg doesn't seem to be accessed. I'm very new to PHP, so please feel free to point out any gross errors in my code. I'd just like the php script to accomplish the same task which terminal executes upon input of the aforementioned command. I'd welcome any and all advice. Cheers.

• Unable to FW/RW video after remuxing multiple mpeg-ts to mp4

  21 juillet 2022, par Jona

  I have written custom code to concat multiple mpeg-ts files into an mp4 video file. I've used as reference the remuxing code sample.

  


  I'm having issues with the final output. I'm unable to fast-forward or rewind as the video looses it's information and plays the same frame till the end. But if i play from the beginning it plays fine.

  


  I compared using ffprobe my custom code remuxer results to that of using the following terminal command :

  


  ffmpeg -i "concat:input1.ts|input2.ts|input3.ts" -c copy output.mp4


  


  To my surprise, the videos look almost identical but I'm noticing some differences in the reported distance and keyframe values. I also did a hex comparison and see minor differences at the end of the file which tells me I've muxed the frames correctly. What could I be missing ? Any tips or ideas would be really helpful !

  


  FFmpeg terminal remuxed video [WORKING VIDEO]


  


  Custom remuxer code video [SCRUBBING BROKEN]


  


  App.mp4 vs ffmpeg.mp4 remuxed video