Converting and Compressing a Video with FFmpeg

Question

I'm using FFmpeg to convert and compress a video. Everything converts/compresses fine, but my video has no sound when I try to play it on a mobile device. But it has sound when I play it on a desktop. I don't know if this has to do with the codec that I am using, I don't know. Can someone help me? I appreciate it. Thank you.

The format that I am using in FFmpeg:

$request->video->move(public_path('/app'), $filename);
        $name_file=uniqid().'intro_video.mp4';
     $ffp=FFMpeg::open($filename)
->addFilter(function ($filters) {
    $filters->resize(new \FFMpeg\Coordinate\Dimension(640, 480));
})
->export()
->toDisk('s3')
->inFormat(new \FFMpeg\Format\Audio\Aac)
->save($name_file);

I think it might be format issue. Usually when I was using html video tag I had to use three versions of the same video in different encoding for supporting all the browsers. — Nick Surmanidze, Nov 26 '18 at 15:47
@NickSurmanidze thank you for replying. What was your solution? Do you mind sharing with me? — Supercoder54551, Nov 26 '18 at 15:51
Well, I was not using laravel for video conversion. I did offline conversion into three different formats. In your case, you need to convert your videos into three different formats and then embed three files into the front end. You will need mp4, ogg and webm formats I think. You can google cross browser html5 video tag. — Nick Surmanidze, Nov 26 '18 at 16:16
@Gyan how would I set it up. Also I am not using mp3. I'll edit my question and show you what I did — Supercoder54551, Nov 26 '18 at 16:44

Shubham Choudhary · Answer 1 · 2019-04-29T05:38:48.950

0

For FFmpeg version 4.0 you need to change the code from

inFormat(new \FFMpeg\Format\Audio\Aac)

to

inFormat(new \FFMpeg\Format\Video\X264('aac', 'libx264'))

I hope this helps.

edited Apr 29 '19 at 05:38

answered Apr 25 '19 at 05:55

Shubham Choudhary

1
1

score 0 · Answer 2 · answered Jan 19 '22 at 11:39

    // Audio compress
    $inputAudio = public_path('/audio/myaudio.mp3');
    $outputAudio = public_path('/output/outputAudio.mp3');
    exec("ffmpeg -i $inputAudio -ab 64 $outputAudio");

    // Video compress
    $inputVideo = public_path('/video/myvideo.mp4');
    $outputVideo = public_path('/output/outputVideo.mp4');
    exec("ffmpeg -i $inputVideo -vf scale=1280:-1 -c:v libx264 -preset veryslow -crf 24 $outputVideo");

For reference https://ostechnix.com/20-ffmpeg-commands-beginners/

also run this command

sudo apt install ffmpeg

Converting and Compressing a Video with FFmpeg

2 Answers2