optimal CRF/bitrate, preset and encoding speed

[rrats]

Hello, I have a lots of PAL mpeg2 films that I've ripped from commercial DVDs. I want to get them onto my 4-incg iPod and I have stumbled across one obstacle - encoding. I am really not sure as to which encoding settings I am supposed to use to get a nice but small h264 file.

A lot of the films I am trying to reencode are very sharp but also very grainy. I don't want to denoise them as high quality denoisers are very slow and I have a lots of films left.

[davexnet]

Try the preset Medium @ CRF 21
Adjust CRF as necessary

My old AMD PC pretty slow also, encoded a 720p file in Vidcoder using NLMeans noise reduction,
encoding speed was approx 25% of realtime

[_Al_]

for SD resolution I'd go with CRF 18 as a maximum value

[jagabo]

On a 4 inch1136x640 screen you probably won't see much difference between crf 18 and 21. Probably not even between the veryfast and medium presets. You may also find a GPU encoder is even faster and delivers adequate quality (depending on what CPU and GPU you have).

[_Al_]

onto my 4-incg iPod

oh man, ...., ok

[rrats]

onto my 4-incg iPod

oh man, ...., ok

I use it as my main audio playback machine. Recently I have decided to put some films on it too as iPod doesn't have mobile data, and wifi isn't available everywhere

[rrats]

On a 4 inch1136x640 screen you probably won't see much difference between crf 18 and 21. Probably not even between the veryfast and medium presets. You may also find a GPU encoder is even faster and delivers adequate quality (depending on what CPU and GPU you have).

thank you

[_Al_]

No problem, I just overlooked you mentioned 4" screen. I reacted to myself.