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Critical commons extra content types
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Revisit transcode parameters #18

Open Ironman28 opened 9 years ago

Ironman28 commented 9 years ago

Every couple of years we tweak the transcode parameters for the various formats we generate from uploads to Critical Commons, usually raising data rates to stay close to the quality of YouTube & Co. Maybe it's time to check in on our transcoder settings again and revise if necessary?

ahelme commented 9 years ago

As I've done before, I can do some research and testing into an revised sweet spot for CC's ffmpeg settings, and post them here.

mgogoulos commented 9 years ago

I don't have a picture here of what optimizations are needed!

Ironman28 commented 9 years ago

I will let Anna respond to this. I don't know what is best. I just know we have routinely improved the quality of our transcoded videos every couple of years in order to stay comparable to other video sharing services.

ahelme commented 9 years ago

Actually, I don't believe I finally received access to the server? So I can't check what the current settings are...

I would suggest that we bump the current STANDARD setting to the current HIGH QUALITY setting.

(Standard currently looks quite poor compared to contemporary expectations in 2015)

And then bump the HIGH QUALITY setting up to something sensible above that.

Note this advice on ffmpeg wiki: https://trac.ffmpeg.org/wiki/Encode/VP8 https://trac.ffmpeg.org/wiki/Encode/H.264