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What do Profile and Level mean in the Export Window?

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Oscar Gotti
What do Profile and Level mean in the Export Window?
on Nov 14, 2014 at 9:32:13 pm

Hello,

I am trying to export in Premiere, and there are options asking for the 'Level' and 'Profile'. I was wondering what they meant?

Thanks

O


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Andrew Kimery
Re: What do Profile and Level mean in the Export Window?
on Nov 15, 2014 at 3:33:37 am

Profiles and Levels are kinda like different standards that exist within a codec.

Here is a link to the Wikipedia entry talking about Profiles and Levels for H.264.
http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Profiles


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Oscar Gotti
Re: What do Profile and Level mean in the Export Window?
on Nov 15, 2014 at 1:22:32 pm

Thanks for this,

Is it safer just to put the highest Profile/Level for all exports? Or will this have drawbacks?

Thanks again.


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Jon Doughtie
Re: What do Profile and Level mean in the Export Window?
on Nov 17, 2014 at 4:15:51 pm

That really depends on your exports, but likely not. If you look to the far right of the Level table form the previous link, you'll see, for example, that some levels each support certain resolutions. So highest level is not suitable for all resolutions.


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Chris Borjis
Re: What do Profile and Level mean in the Export Window?
on Nov 17, 2014 at 5:15:54 pm

and some lower levels (like 3.1 )have higher compatibility with older devices: iphone3, original ipad etc...



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Walter Soyka
Re: What do Profile and Level mean in the Export Window?
on Nov 18, 2014 at 2:18:33 pm

[Oscar Gotti] "Is it safer just to put the highest Profile/Level for all exports? Or will this have drawbacks?"

To build on Chris's point, Levels are like tiers of decoder requirements. An MPEG-4 playback device will offer support up to a certain level, but not necessarily beyond.

Encoding things at the highest Profile/Level combination means falling into the trap of "more is better." Think back to DVD authoring. A higher bit-rate would make a better image, but if you pushed that bit-rate above the maximum spec, the DVD player wouldn't be able to read the bits off the disc fast enough, leading to dropouts, stutter, and a decidedly inferior experience.

Know your target and provide the best experience you can within its limitations.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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