I have a simple video player on my xPage that refers to an attached video in Notes document.
<video class="videoContainer" controls="controls" id="callVideo" preload="none">
<source src="./xxxxxxxxxxxx/$file/myVideo.mp4" type="video/mp4"></source>
</video>
//Video format mp4
//Video length ~55min
//File size ~50Mb
it works fine if I open the page from one server but stops to reproduce video if I open it from another server. It stops after about 2-3 minutes. So is it something I need to tuneup on Domino server itself?
If I understand the question correctly, it's not a problem uploading the video to Domino but streaming it from Domino.
It's worth checking the Notes log for any Java memory errors. The video will be being streamed from the server to the browser via Java, so it seems hypothetically plausible that one server could be hitting Java memory heap errors where another is not. The HTTPJVMMaxHeapSize is set independently on servers so may be different.