过滤vimeo oEmbed以添加时间编码

I am using a function to filter wp_oembed on my site that is allowing me to pass all the specified vimeo args through to my query but I want to add a timecode, and this isn't specified in the vimeo args

https://developer.vimeo.com/api/oembed/videos

I've tried as many methods as I know to add the timecode data to the URL - I have a specific field on my post where I add the vimeo URL and a second for the timecode - I can build and echo the URL but when I pass it through the oEmbed function it strips the timecode from the URL.

I have tried rebuilding the url as it's passed through the oembed I have tried adding lines into the filter in my functions doc

I am using the function detailed here https://wordpress.stackexchange.com/questions/116976/any-way-to-use-a-custom-parameter-for-vimeo-embed-without-using-an-iframe?rq=1

    <?php 

        $film_url = get_post_meta( get_the_ID(), 'klossWP_film_url', true );
        $film_title = get_post_meta( get_the_ID(), 'klossWP_film_project', true );
        $film_client = get_post_meta( get_the_ID(), 'klossWP_film_client', true );      
        $film_hover_time = get_post_meta( get_the_ID(), 'klossWP_film_time', true );
        $player = 'vimeo_' . get_the_ID();      

        echo wp_oembed_get($film_url, array(

      'title' => 'false',
      'byline' => 'false',
      'portrait' => 'false',
        'autoplay' => '0',
      'muted' => '1',
      'controls' => 'false',
      'color' => '',
      'player_id' => $player,
      'playsinline' => '',
      'responsive' => ''

    ));

    ?>                                  

</div>

I'd expect the timecode to be suffixed at the end of the vimeo URL but also realise that the function I'm using is probably directly tied into the vimeo embed args and that I'm going about this all wrong