You are not logged in.

#1 2022-09-26 18:23:29

Registered: 2010-08-28
Posts: 45

How to nicely compress a video?

Hello, I would like to compress a dashcam video to a reasonable size.
The original file takes around 450MB for only two minutes at 1080p, and already has compression artefacts on dark areas.

I followed FFmpeg guide for H265 to extract and compress 22 seconds into 10MB. It looks okay for a small clip, but I'm always wondering how I can find "HDlight" videos that only take 2GB for 2 hours will keeping a great quality.
Is it because movies have more stable shots? Should I try to stabilize the video?

PS: I also tried HandBrake, the quality is the same than using FFmpeg manually but it also fades the colours.


#2 2022-09-27 00:54:08

Registered: 2016-11-21
Posts: 688

Re: How to nicely compress a video?

im not expert on encoding but ive done a bit in my time, your source quality probably isnt good enough to give the results your expecting, the videos youve seen were probably from a very crisp high quality source.
as for encoding ive only used h264 and found that the slower the encode setting the better the quality, pretty sure i normally use rf22 and slow or slower preset. it may take longer but the quality is better.
really you just have to try settings and see what happens.


Board footer

Powered by FluxBB