HTML5 Canvas, Video Component with timeline navigations

Hello there, i have 2 question and would love if someone got a solution for them:

1.i am trying to achieve functioning navigation with the video component, but when moving frames the video component dissapears.

i also checked and the video tag dissapears.

any help? (sadly i cannot upload the project, i can upload an empty project with the component several frames tho)

i also so this was asked before without a final solution :html5 canvas video file deleted when file is published or tested

2nd question:

i am trying to create the videos as repsonsive as it gets, in a way that it wont run over other

inside elements (because html5 components are always above).

is there a way to do this??

thank you very much!