Edit/encode video to make it play slightly faster?

[NaePasaran]

Any free and easy ways to do this?

Made the video easy enough using Open Shot buts its 10 minutes 20 seconds long. I want to speed it up slightly to get it to play under 10 minutes otherwise I'll be deducted a grade (the video can be 09:59:99 but not over).

Trimmed everything as back as much as I can so hoping I can just speed the entire thing up slightly as I speak quite slowly anyway.

Any ideas? Thanks

[mmm-five]

What frame rate is it now?

Handbrake or Avidemux should let you change the framerate slightly to shorten the runtime
https://handbrake.fr/docs/en/latest/technical/fram...
https://www.videohelp.com/software/AviDemux

[jagnet]

https://ffmpeg.org/download.html

ffmpeg -i "input.mp4" -filter_complex "[0:v]setpts=10/10.334*PTS[v];[0:a]atempo=10.334/10[a]" -map "[v]" -map "[a]" -c:v libx264 -c:a aac "output.mp4"

setpts does the video stream
atempo does the audio

10.334 should fit a 620 second video into <599.99 seconds

I'm assuming it's an mp4 video