I recommend using H.265 and Opus for audio. In my opinion, encoding to H.264 in 2023 is not a wise choice. AV1 is a good option, especially with hardware encoding and compatible devices.
this post was submitted on 04 Sep 2023
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Also, software enfolding only, hardware encoding really isn’t as good.
I would say good enough for personal use unless you have good cpu
I'm favoring h265 10-bit for my library recently. Whether SDR or not, it seems to provide a slightly better compression ratio and fewer banding artifacts than 8-bit. Any player that can handle 4K streaming content can decode h265 10-bit, so there's a ton of forward compatibility for the foreseeable future
So, any device that handles 4K should be able to handle H.265. Good informattion to know. Thanks for the input!
For broad compatibility and good quality+compression, h265. I use Handbrake's Nvidia encoder and it works great. I'm not sure about the differences between AAC and AC3.
AAC is generally more modern and better for lower bitrates, but AC3 (also known as Dolby Digital) has the advantage of being able to be transmitted in 5.1 over SPIDF optical connections, so it can allow for surround sound in older setups that may not otherwise be able to recieve digital surround sound.
Opus is slightly better than AAC at matched bitrates, slightly less commonly supported, and totally open-source. It's a fine choice as well.
Also of note because of its use for anime encodes is FLAC, which is lossless and therefore results in much larger files, but will always have the exact same quality as the original audio it encoded, so it's excellent for archival quality.
Av1 is pretty well supported now on a lot of devices thanks to dav1d, and it's the video codec with the best quality:compression ratio. "broad device compatibility" will be up to you and your devices, I would seriously look into it. It's what I personally encode all my stuff to.
as for audio Opus or AAC, AC-3 is bad
Why is AC-3 bad? It's pretty much compatible with everything, holds Dolby Digital and atmos. Especially if the source is already encoded in AC-3, would it be wise to re-encode it?
if you already have AC-3 content you can leave it as is, however as a codec itself, it is worse then aac and opus in terms of fidelity:size
I agree that if it is already AAC, it should not be changed as it has the highest fidelity and best compression.
While AC-3 is not the best, it and AC-4 are the only formats i know that can encode TrueHD and Atmos metadata, so that should be kept it it is there.
Any transcode will lose fidelity unless the target codec is lossless, and I don't think AAC has a lossless mode.
yeah but OP is wondering about transcoding their stuff. there is no reason to encode to AC3. I would just use traditional surround if you plan kn transcoding it.