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• Integrate necessary ffmpeg libraries in own project for MCU (microcontrolers) [closed]

  16 septembre 2023, par Borel Kamnang

  I use two ffmpeg commands here :

  


  ffmpeg -i BigBuckBunny_320x180.mp4 -vf scale=192:96,setsar=1:1 outputBBB.mp4
ffmpeg -i outputBBB.mp4 -vf "fps=12,scale=-1:96:flags=lanczos,crop=192:in_h:(in_w-192)/2:0" -c:v rawvideo -pix_fmt rgb565be BigBuckBunny_192x96_12fps.rgb


  


  The first is to downscale an original video and the second is to convert the scaled video to a .rgb format.

  


  As anew user of ffmpeg, I would like to know what are libraries used for that two command to just integrate them in my Arduino IDE C++ project an just call the necessary functions to do the downscale and the conversion.

  


  And another of my concerns is knowing how I can run any ffmpeg in an Raspberry Pi Pico W (RP2040) or ESP32 microcontroller ?

  


  I tried to include the ffmpeg libraries folder in a created Arduino IDE project for Raspberry pico w and the link for files doesn't work. In addition to having the config.h and config components.h files missing in the folder downloaded from the ffmpeg site, there are too many dependencies between .h and .c files.

  


  extern "C" {
  #include "src/ffmpeg/libavcodec/avcodec.h"       
  #include "src/ffmpeg/libavutil/mathematics.h"
}
void setup() {
   Serial.begin(115200);
   delay(10000);
 }
 loop(){
 }


  


  It's been three days today that I've been trying to compile from Arduino IDE, and correct the links in the files.
The problem is also that I don't even have the certainty of what it will work in the Raspberry Pi PicoW or ESP32 afterwards.

  


• use PHP ffmpeg to split a video into many clips of X minute [duplicate]

  23 août 2017, par TakiDDine

  This question already has an answer here :

  • FFmpeg splitting large files
    
    1 answer
    

  i have a lot of videos in a folder , and i want to split each one of them into many clips of 5 minutes and delete the original video after, i have tried many codes here , but it didn’t work for me

  now my code cut’s the video to the only first 5 minutes , any help please , this toke 3 days from me, any help will be much appreciated

  these is my code

   /******** Cut All The Videos To 5 min and send them to output folder *****/
  
  
  
   foreach ($files as $file ) {           
  
  
  
              $path_parts = pathinfo('../../videos/'.$file);
  
              $vids       = '../../videos/';
  
              $outpt       = '../../output/';
  
              $ext        = $path_parts['extension'];
  
              $name       = $path_parts['filename'];
  
              $to = $vids.$file;
  
  
  
              // add old_video_ prefix
  
              rename($to , $vids."old_vid_".$name.".".$ext);
  
  
  
              $video = $vids."old_vid_".$name.".".$ext; 
  
              $to =  $outpt.$name.".".$ext; 
  
  
  
              // To prevent white space error.
  
              $video = "\"$video\"";
  
              $to = "\"$to\""; 
  
  
  
              //ffmpeg command , to cut video
  
              $cmd = "$ffmpeg -i   $video   -ss 00:00:00 -t 00:05:00 -async 1 -c copy $to"; 
  
  
  
              $return = `$cmd`;
  
  
  
      } 

• FFmpeg output doesn't match source

  10 octobre 2019, par Patrick O'Brien

  I can’t seem to match the ffmpeg output with the source exr. Linking to the source exr and movie here : https://www.dropbox.com/sh/mc19q5m9bf17goi/AAAfs4o_vxnAePIZVrOBrEZRa?dl=0. I’ve tried a lot of flags, the closest seems to be this :

  C :\PyAniTools\apps\pyShoot\ffmpeg\bin\ffmpeg.exe -apply_trc iec61966_2_1 -i C :\Users\Patrick\Downloads\050_020_render_layer\char_back\char_back.1062.exr -vcodec libx264 -pix_fmt yuv420p -preset slow -crf 18 -r 25 C :\Users\Patrick\Downloads\050_020_render_layer\char_back\char_back.1062.mp4

  It’s still different though. Source exr :
  

  It’s hard to tell probably but parts of the image get darker :
  

  Any help would be greatly appreciated, I’ve been trying things for days. Thanks,
  Patrick