API Parameters on remote video (youtube) not working entirely

Hi there - I'm getting an exact same issue with Vimeo URL parameters. I've put together the following code so far for Vimeo - and it's working - but I can't figure out where the "app_id" value is set - so feel the solution is fragile.

function neway_barrio_sass_preprocess_media_oembed_iframe(array &$variables)
{
  $url = Drupal::request()->query->get('url');
  $params = UrlHelper::parse($url)['query'];
  // Take each param and add together to make a param list separated by &
  $query = http_build_query($params);

  kint($url);
  kint($params);
  kint($query);


  $original = $variables["media"]->__toString();
  kint($original);
  if (!empty($params)) {
    $original = str_replace('?app_id', '?' . $query . '&app_id', $original);
  }
  kint($original);

  $variables["media"] = IFrameMarkup::create($original);
}

Hoping someone from the community can chime in with some insight. I'm going to explore "hook_oembed_resource_url_alter" next...

Usning Drupal 10.3.6

Hi @newaytech - I ran into a similar issue here with Vimeo and thought I'd put my solution in here.

I decided to use regex inside mytheme_preprocess_media_oembed_iframe(). It makes some assumptions, such as the app_id query parameter will always be there, so you might want to do some sanity checks. I haven't had time yet.

It works on a Vimeo URL like https://player.vimeo.com/video/xxxxxxxxxx?app_id=xxxxxx

function greene_preprocess_media_oembed_iframe(&$variables) {
  $original = $variables['media']->__toString();

  /** @var \Drupal\media\OEmbed\Resource $resource */
  $resource = $variables['resource'];

 if ($resource->getProvider()->getName() === 'Vimeo') {
    $original = preg_replace('/(.*)(\?app_id=\d+)(.*)/', '$1$2&muted=1&autoplay=1$3', $original);
    $variables['media'] = \Drupal\media\IFrameMarkup::create($original);
 }
}

This applies the muted and autoplay params needed to make the video loop.