Video

What does it do

Coverts TopicVideo into HLS stream.

Installing

• composer require escolalms/video

Requirements

• ffmpeg must be installed
• Once EscolaLms\TopicType\TopicTypeChanged is dispatched job ProccessVideo added to queue

Configuration

You can configure the quality and resolution of the processed video by setting values in config.php file under the bitrates key. The key takes arrays of values.

• kiloBitrates parameter is responsible for the video quality.
• scale parameter is responsible for video resolution, setting this parameter may cause video distortion.

You can also disable video processing or change the drive.

Example config:

return [
    'disk' => env('VIDEO_DISK', config('filesystems.default')),
    'enable' => env('VIDEO_PROCESSING_ENABLE', true),
    'bitrates' => [
        [
            'kiloBitrate' => 250, // video quality
            'scale' => '640:480' // This parameter changes the video resolution. You can omit this parameter.
        ],
        ...
    ]
];

Example

This package extends API resources in EscolaLms\TopicType package.

• \EscolaLms\TopicTypes\Http\Resources\TopicType\Client\VideoResource - replaces value and url fields with hls values

{
  "id": 1,
  "value": "course/1/topic/1/video/hls.m3u8",
  "url": "https://escolalms.com/course/1/topic/1/video/hls.m3u8"
}

• \EscolaLms\TopicTypes\Http\Resources\TopicType\Admin\VideoResource - adds hls values

{
  "id": 1,
  "value": "course/1/topic/1/video/video.mp4",
  "url": "https://escolalms.com/course/1/topic/1/video/video.mp4",
  "hls": "course/1/topic/1/video/hls.m3u8",
  "hls_url": "https://escolalms.com/course/1/topic/1/video/hls.m3u8"
}

The processing status is saved in the json field in the topics table:

• Processing successful

{
  "ffmpeg": {
    "state": "finished",
      "path": "course/1/topic/1/video/hls.m3u8"
  }
}

• Processing failed

{
  "ffmpeg": {
    "state" : "error",
    "message" : "Unable to probe /path/video.mp4"
  }
}

Tests

Run ./vendor/bin/phpunit to run tests. See tests folder as it's quite good staring point as documentation appendix.

Test details

Events

1. ProcessVideoStarted - event dispatched after processing started
2. ProcessVideoFailed - event dispatched after processing failed