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Topic: Prores options - kostya, anatoliy, standard

Hi, I am wondering what the differences are between the three types of Prores Encoders, kostya, anatoliy and standard, and also the -vtag apcn options?

Kind regards.

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Re: Prores options - kostya, anatoliy, standard

I am wondering what the differences are between the three types of Prores Encoders, kostya, anatoliy and standard

They are simply three implementations and nowadays Kostyas is the recommend one, since it is the newest and support the most profiles. smile Anatoliys ProRes encoder doesn't support 444 encoding and the old standard prores encoder is iirc simply the oldest and slowest implementation. see: https://trac.ffmpeg.org/wiki/Encode/VFX#Prores

and also the -vtag apcn options?

vtag stands for video tag, which sets a specific flag to the video stream
for ProRes, these flags are used to:
a. signal the Profile (otherwise Quicktime won't properly recognize the stream)
b. limit the bit rates 'apch' - 185mbps, 'apcn' - 112mbps, 'apcs' - 75mbps, 'apco' - 36mbps.
see: https://documentation.apple.com/en/fina … tasks=true

Hope this helps. smile

Cu Selur

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Re: Prores options - kostya, anatoliy, standard

Hi Selur, thanks for the info. Regarding apch, I see in the link you sent me talks about the qscale parameter, does this do the same thing as apch? Which one should I use?

Kind regards.

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Re: Prores options - kostya, anatoliy, standard

Hybrid doesn't have an option to set qscale (mainly because nobody asked for it and I'm not using ProRes myself).
There are also some additional options which Hybrid also doesn't offer, which I just stumbled over. smile
see: http://codecs.multimedia.cx/?p=388

Sadly the whole lot isn't that well documented,...

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Re: Prores options - kostya, anatoliy, standard

Cheers for the info.