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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 :


  


• FFmpeg and QuickTime Player dimensions of video do not match [duplicate]

  31 mai 2020, par GRS

  I have a video.mp4, which I scaled using FFmpeg to get out.mp4. The new video has the following probe :

  



  {'streams': [{'index': 0,
   'codec_name': 'h264',
   'codec_long_name': 'H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10',
   'profile': 'High',
   'codec_type': 'video',
   'codec_time_base': '1/50',
   'codec_tag_string': 'avc1',
   'codec_tag': '0x31637661',
   'width': 886,
   'height': 1920,
   'coded_width': 896,
   'coded_height': 1920,
   'has_b_frames': 2,
   'sample_aspect_ratio': '5120:1329',
   'display_aspect_ratio': '16:9',
   'pix_fmt': 'yuv420p',
   'level': 40,
   'chroma_location': 'left',
   'refs': 1,
   'is_avc': 'true',
   'nal_length_size': '4',
   'r_frame_rate': '25/1',
   'avg_frame_rate': '25/1',
   'time_base': '1/12800',
   'start_pts': 0,
   'start_time': '0.000000',
   'duration_ts': 384512,
   'duration': '30.040000',
   'bit_rate': '490832',
   'bits_per_raw_sample': '8',
   'nb_frames': '751',
   'disposition': {'default': 1,
    'dub': 0,
    'original': 0,
    'comment': 0,
    'lyrics': 0,
    'karaoke': 0,
    'forced': 0,
    'hearing_impaired': 0,
    'visual_impaired': 0,
    'clean_effects': 0,
    'attached_pic': 0,
    'timed_thumbnails': 0},
   'tags': {'language': 'und', 'handler_name': 'VideoHandler'}}],
 'format': {'filename': 'out.mp4',
  'nb_streams': 1,
  'nb_programs': 0,
  'format_name': 'mov,mp4,m4a,3gp,3g2,mj2',
  'format_long_name': 'QuickTime / MOV',
  'start_time': '0.000000',
  'duration': '30.040000',
  'size': '1852948',
  'bit_rate': '493461',
  'probe_score': 100,
  'tags': {'major_brand': 'isom',
   'minor_version': '512',
   'compatible_brands': 'isomiso2avc1mp41',
   'encoder': 'Lavf58.20.100'}}}


  



  I am expecting my video player to say the video is 886 x 1920, however, it is 3413:1920.


  



  What could be the error ? I am using pix_frmt=yuva420p and codec=libx264 to create the video.

  



  The error is that my ascpect ratio remains 16:9, which is the original input video, when it should automatically change to 9:19. E.g. 3413 = 1920 * 16 / 9. So why isn't the ascpect ratio changed when the video is scaled ?

  


• FFMPEG RTMP streaming to WOWZA server with credentials

  29 juin 2016, par Burgaz

  I would like to stream my webcam using FFMPEG (on Windows) to a Wowza server.
  The Wowza server has several applications defined.
  Each has its own credentials (user name and password).

  I’m using the following command line :

  ffmpeg -f dshow -i video="Integrated Webcam" -s 512x288 -vcodec libx264 -b:v 1024k -pix_fmt yuv420p -f flv rtmp://<wowza server="server" address="address">:1935/appname/streamname
  
  </wowza>

  Yet the Wowza server fails to get the stream.
  What am I missing here ?
  Should I add the credentials to Wowza’s applications ? If so, what is the URL format that will allow me to do so ?

  Thanks.