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Ffmpeg - fast but bad results, handbrake - slow but good results (lemmy.one)

submitted 11 months ago by [email protected] to c/[email protected]

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Hi all,

I have been re-encoding using handbrake’s presets (Matroska hevc 480p/1080p) and results are good for the most part, some issues here and there. I started trying out ffmpeg with cuda and hevc_nvenc and p7 preset. Video quality looks way better but audio is very bad. I am using aac 128k and the audio is very compressed and quite frankly hurts my ears. I started looking into the handbrake options and there’s auto pass through and stereo downmixing, etc. I tried reading the ffmpeg documentation but there is a lot there and I’m not really sure what I’m doing.

tldr; Anyone have tips on getting good quality audio encoding (aac) from my bluray rips?

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[–] [email protected] 4 points 11 months ago (1 children)

Some things to look at:

Is it possible that Handbrake is just copying the audio from the source, and ffmpeg is transcoding it? I make podcast videos for my partner and I have run into problems with audio quality, so I think I have heard what you're talking about.

Also, what are you running this on? It is possible that the Ffmpeg on your system was not compiled with all the options you need.

[–] [email protected] 1 points 11 months ago

Running on Ubuntu LTS. I will try out copying the audio and comparing. I have a huge backlog and already made a good dent before I caught this problem.