What's syntax for adding parameters?

[youtube video=_9tBFVKhn5o maxw=300 style="margin-right:auto;margin-left:auto;" autoplay=1]

OR

[youtube video=https://www.youtube.com/watch?v=_9tBFVKhn5o maxw=300 autoplay=1]

Regards

What is the syntax for a video that should start and end at a certain place, please? For example, if I want the video to start at 53 seconds and end at 4 minutes and 23 seconds into the video, how is this written? Thanks so much!
-GiaP

Here
https://www.ads-software.com/plugins/youtube-widget-responsive/other_notes/ you can find all command,
anyway

[youtube video=….. start_s=53 end_m=4 end_s=23]