I have a collection of about ~110 4K Blu-Ray movies that I’ve ripped and I want to take the time to compress and store them for use on a future Jellyfin server.
I know some very basics about ffmpeg and general codec information, but I have a very specific set of goals in mind I’m hoping someone could point me in the right direction with:
- Smaller file size (obviously)
- Image quality good enough that I cannot spot the difference, even on a high-end TV or projector
- Preserved audio
- Preserved HDR metadata
In a perfect world, I would love to be able to convert the proprietary HDR into an open standard, and the Dolby Atmos audio into an open standard, but a good compromise is this.
Assuming that I have the hardware necessary to do the initial encoding, and my server will be powerful enough for transcoding in that format, any tips or pointers?
If you want to do an open codec, use AV1 codec and Opus for audio.
https://github.com/master-of-zen/Av1an and use aomenc for the av1 codec.
Ffmpeg doesn’t have good av1 support.
With current hardware support I would advise against using AV1 or even H.265.
I’d recommend to experiment with H.264 and low CRF values to see what quality loss and file size OP is comfortable with: https://trac.ffmpeg.org/wiki/Encode/H.264
What hardware doesn’t support H.265?
Old smartphones, old CPUs/GPUs, some SBCs.