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• Android editing video files

  25 novembre 2013, par Kernald

  I'm working on an Android application in which the user should be able to edit a video (cut and reorder some parts of a video taken with the phone).

  I have no idea how to do this : the media package doesn't seems to contain anything related to this. The videoeditor package could probably help me, but it's not public in the SDK. ffmpeg could maybe be a solution, but I'd like to avoid using NDK if I can.

  Any directions on how to do it ?

• Change video resolution in loop

  24 juillet 2020, par WoJo

  I am trying to decrease the resolution of a video to under 500x500. I don't want to change it to exactly 500x500 because that would mess up video quality. So what I am trying to do is to decrease the resolution by 75% in a loop, and that loop would only stop when the video is under 500x500. In theory that would not be hard, but I can't seem to figure it out.

  


  var vidwidth = 501; //Create variable and put it to 501
var vidheight = 501; //so that it won't go through the If Statement
fs.copyFile(filepath2, './media/media.mp4', (err: any) => { //Copy given file to directory
    console.log('filepath2 was copied to media.mp4'); //Log confirmation (Not appearing for some reason, but file is copied)
})
while (true) {
    getDimensions('./media/media.mp4').then(function (dimensions: any) { //Get dimensions of copied video
        var vidwidth = parseInt(dimensions.width)   //Parse to Int
        var vidheight = parseInt(dimensions.height) //and put in variables
    })
    ffmpeg('./media/media.mp4')                 //Call ffmpeg function with copied video path
        .output('./media/media.mp4')            //Set output to the same file so we can loop it
        .size('75%')                            //Reduce resolution by 75%
        .on('end', function() {                 //Log confirmation on end
            console.log('Finished processing'); //(Not appearing)
        })                                      //
        .run();                                 //Run function
    if (vidwidth < 500 && vidheight < 500) {    //Check if both the width and height is under 500px
        break;                                  //If true, break the loop and continue
    }
}


  


  This is the current code I am using with comments. Basically what happens is it gets stuck in the while loop because the dimensions of the video won't change. Tested with console.log() line. I think that if I can fix the ffmpeg problem somehow it will all be fixed.
I'd appreciate any help :)

  


  PS : This is all made in typescript, then build into js using npx tsc

  


• Conditional formats in Laravel FFMPEG

  29 décembre 2020, par JJ The Second

  I'm currently using Laravel FFMPEG in a Laravel project and running followings which works well https://github.com/protonemedia/laravel-ffmpeg

  


  Here is an example of code that is working :

  


   $lowBitrate = (new X264)->setKiloBitrate(250);
            $midBitrate = (new X264)->setKiloBitrate(500);
            $highBitrate = (new X264)->setKiloBitrate(1000);
            $superBitrate = (new X264)->setKiloBitrate(1500);

            FFMpeg::open('steve_howe.mp4')
                ->exportForHLS()
                ->addFormat($lowBitrate, function($media) {
                    $media->addFilter('scale=640:480');
                })

                 ->addFormat($midBitrate, function($media) {
                    $media->scale(960, 720);
                })
                ->addFormat($highBitrate, function ($media) {
                    $media->addFilter(function ($filters, $in, $out) {
                        $filters->custom($in, 'scale=1920:1200', $out); // $in, $parameters, $out
                    });
                })
                ->addFormat($superBitrate, function($media) {
                    $media->addLegacyFilter(function ($filters) {
                        $filters->resize(new \FFMpeg\Coordinate\Dimension(2560, 1920));
                    });
                })
                ->save('adaptive_steve.m3u8');


  


  Now, my challenge is that on client side, my users need to select what formats they'd like to include in transcoding job and one job may contain 2 bitrate variation or more so there is a need to have a conditional statement before calling ->addFromat()

  


  Ideally I'd need to approach this :

  


   $lowBitrate = (new X264)->setKiloBitrate(250);
        $midBitrate = (new X264)->setKiloBitrate(500);
        $highBitrate = (new X264)->setKiloBitrate(1000);
        $superBitrate = (new X264)->setKiloBitrate(1500);

        FFMpeg::open('steve_howe.mp4')
            ->exportForHLS()
            ->addFormat($lowBitrate, function($media) {
                $media->addFilter('scale=640:480');
            })
             /// adding if statement here
             ->addFormat($midBitrate, function($media) {
                $media->scale(960, 720);
            })
            ->addFormat($highBitrate, function ($media) {
                $media->addFilter(function ($filters, $in, $out) {
                    $filters->custom($in, 'scale=1920:1200', $out); // $in, $parameters, $out
                });
            })
            ->addFormat($superBitrate, function($media) {
                $media->addLegacyFilter(function ($filters) {
                    $filters->resize(new \FFMpeg\Coordinate\Dimension(2560, 1920));
                });
            })
            ->save('adaptive_steve.m3u8');


  


  No idea how to add a if/else statement here. How do you think I should approach this ?

  


  Thanks