I have the problem in redmine. Video attachments absolutly cannot be seeking. I deleted all js scripts working on videos and tried to change 'currentTime'. It doesn't work. I checked it with different video files, changed webm/mp4, tried to use 'video-js'. Video still cannot be seeking.
Simplisticaly this code do nothing
media = document.querySelector('video')
console.log(media.duration) // 119.03
media.currentTime = 10 // do nothing
The event 'seeking' works only at the beggining.
Normally, code above should work. Have your tried on different browsers.
const media = document.querySelector('video');
media.currentTime = 5;
<video src="https://glpjt.s3.amazonaws.com/so/av/vid5.mp4" width='240' controls></video>
I decide my trouble for rails. Its need to add for video file requests:
headers['Accept-Ranges'] = 'bytes'
Good luck, guys!