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?

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[–] reddthat@reddthat.com 5 points 9 months ago (8 children)

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.

[–] Lemmchen@feddit.de 2 points 9 months ago* (last edited 9 months ago) (7 children)

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

[–] dan@upvote.au 3 points 9 months ago (2 children)

What hardware doesn't support H.265?

[–] Lemmchen@feddit.de -1 points 9 months ago (1 children)

Old smartphones, old CPUs/GPUs, some SBCs.

[–] dan@upvote.au 2 points 9 months ago* (last edited 9 months ago)

How many of those are you streaming video to, though?

Intel iGPUs have supported H265 since 7th gen, which is 8 years old now (released in 2016). Nvidia added support the same year, starting with the GTX1050. Even the Raspberry Pi 4 supports hardware-accelerated H265.

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