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• PHP FFMPEG match Instagram aspect ratio requirements

  19 mai 2021, par Linesofcode

  As stated here, the Instagram API requirements to upload a video are :

  


  - Picture size
- - Maximum columns (horizontal pixels): 1920
- - Minimum aspect ratio [cols / rows]: 4 / 5
- - Maximum aspect ratio [cols / rows]: 16 / 9


  


  I'm having some problems figuring it out if the aspect ratio matches. I grab the width and height of the video like this :

  


  $ffprobe = \FFMpeg\FFProbe::create();
$video = $ffprobe->streams($file)->videos()->first();
$width = $video->get('width');
$height = $video->get('height');


  


  And then I know the ratio by dividing the width by height.

  


  The Instagram requirements about Portrait & Landscape videos are :

  


  Portrait - min: 0.8 ; max: 0.99
Landscape - min: 1.01 ; max: 1.78


  


  So why does a video of 848x480 (aspect ratio of 1.76) fails to upload to Instagram by returning "The video format is not supported" and how can I be completely sure that the aspect ratio matches the requirements before trying to upload ?

  


  Edit

  


  The full validation of Instagram requirements :

  


  $video = $ffprobe->streams($file)->videos()->first();
$audio = $ffprobe->streams($file)->audios()->first();
$codec = $video->get('codec_name');
$frameRate = eval('return ' . $video->get('avg_frame_rate') . ';'); // 30/1 -> 30
$width = $video->get('width');
$height = $video->get('height');
$duration = $video->get('duration');

$ratio = round($width / $height, 3);

// Portrait
if ($width < $height)
    if ($ratio < 0.8 || $ratio > 0.99)
        return false;
        
// Landscape
if ($width > $height)
    if ($ratio < 1.01 || $ratio > 1.78)
        return false;


if (!in_array($codec, ['h264', 'hevc']))
    return false;

if ($frameRate < 23 || $frameRate > 60)
    return false;

if ($width > 1920)
    return false;

if ($duration < 3 || $duration > 60)
    return false;

if ($audio)
{
    $aCodec = $audio->get('codec_name');

    if ($aCodec != 'aac')
        return false;
}

return true;


  


  Sample not uploading into Instagram :


  


• mov : Prioritize aspect ratio values found in pasp atom

  6 avril 2021, par Vittorio Giovara

  mov : Prioritize aspect ratio values found in pasp atom
  From the ISO/IEC specification for MP4 :
  
    The pixel aspect ratio and clean aperture of the video may be specified
  
    using the ‘pasp’ and ‘clap’ sample entry boxes, respectively. These are
  
    both optional ; if present, they over-ride the declarations (if any) in
  
    structures specific to the video codec, which structures should be
  
    examined if these boxes are absent. For maximum compatibility, these
  
    boxes should follow, not precede, any boxes defined in or required by
  
    derived specifications.
  Fixes trac/#7277.
  

  • [DH] libavformat/mov.c

• How to change size of watermark image and set Size and Aspect Ratio of Video using fluent-ffmpeg ?

  12 avril 2021, par Kirasiris

  Does anyone knows how to change the size of the watermark image ? ; secondly I tried to use complexFilter() with the size() and aspect() methods but it throws an error of complex-filter can not be used with complexFiltergraph in the same input stream ?

  


  This is my code :

  


  await ffmpeg('tmp/' + file.name)
  .input(waterMarkImage)
  .videoFilter([
    'overlay=10:10',
    'scale=1280:720',
    'aspect=16:9',
    'crop=1280:554:0:90',
  ])
  .output(key)
  .on('progress', function (progress) {
    console.log('Processing: ' + progress.percent + '% done')
  })
  .on('end', function (stdout, stderr) {
    console.log('Finished')
    fs.unlink(dir + file.name, function (err) {
      if (err) throw err
      console.log('File deleted')
    })
  })
  .on('error', function (err) {
    console.log('an error happened: ' + err.message)
    fs.unlink(dir + file.name, function (err) {
      if (err) throw err
      console.log('File deleted')
    })
  })
  .save(dir + key)


  


  Thanks.