This IS the Avid L2: Re: [Avid-L2] Isis Media Composer using AVXIntra as editing codec?

Friday, February 1, 2013

Re: [Avid-L2] Isis Media Composer using AVXIntra as editing codec?

DNxHD is not a Long-GOP codec, so it *will* provide better performance.

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Robert Lawson
CBS News

On 2/1/13, Steve Hullfish steve4lists@veralith.com> wrote:
> Marc, You are correct. I'm mistaken. It's AVCHD. That's cool? These are MC
> 6.5 systems running on a mirrored Isis 7000 of considerable size.
>
> Their consultant told them to use AVDHC at 720p. I would prefer DNxHD at
> 1080.
>
> This is for a TV station in a major market. The news stuff is P2. The rest
> is all off of network servers, coming in as some flavor of MPEG2 HD.
>
> I was feeling like the system (which is brand-spanking new) was sluggish.
>
> If it's fine to edit with and it saves space, I'm all for it. Personally I'd
> prefer DNxHD and 1080, but that's just personal and I don't know that it
> would really look any better, but I feel like at DNxHD 45 it wouldn't save
> that much space over AVCHD and MIGHT provide better performance.
>
> Steve Hullfish
> contributor: www.provideocoalition.com
> author: "The Art and Technique of Digital Color Correction"
>
> On Jan 31, 2013, at 11:23 PM, Mark Spano cutandcover@gmail.com> wrote:
>
>> Steve,
>>
>> Are you maybe confusing AVC-Intra with AVCHD? AVC-Intra (in MC) is a
>> 100Mbit/sec high quality intraframe codec suitable for editing,
>> mastering,
>> shooting, etc.. (http://en.wikipedia.org/wiki/AVC-Intra)
>>
>> AVCHD (http://en.wikipedia.org/wiki/AVCHD) is an extremely efficient
>> lossy
>> codec only suitable for shooting (sometimes) and highly compressed
>> delivery. And yes, you do want to get away from it quickly when bringing
>> it
>> in for editing.
>>
>> AVC-Intra works well but I would say is sluggish compared to DNxHD
>> (unless
>> you have the Nitris DX AVC-I chip, as Dave mentioned). However, it's not
>> a
>> space saver or a lower quality codec.
>>
>>
>> On Thu, Jan 31, 2013 at 10:55 PM, Steve Hullfish
>> steve4lists@veralith.com>wrote:
>>
>>> **
>>>
>>>
>>> I'm freelancing for a place that has an Isis and Media Composer 6.5s
>>>
>>> When they were walking me through their standard procedures, the first
>>> one
>>> was to set the Media Creation settings to capture at AVCIntra... My
>>> previous dealings with AVCIntra as an editing format SUCKED. I thought
>>> the
>>> goal was to get AWAY from Intra as quickly as possible. They're actually
>>> intentionally taking media INTO AVCIntra on Avid. Is there any benefit
>>> to
>>> this? I doubt it saves that much space/bandwidth compared to DNxHD 45...
>>>
>>> There are multiple stations using AVCIntra as an editing media format.
>>> Does anyone think there's any good reason for that? I'm not being
>>> sarcastic
>>> or rhetorical. I want to know. I want to convince them to switch to 45,
>>> but
>>> that will be going against the advice of the "expert" that set this up.
>>>
>>> Steve
>>>
>>>
>>>
>>
>>
>> [Non-text portions of this message have been removed]
>>
>>
>>
>> ------------------------------------
>>
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>>
>>
>>
>>
>
>

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Rob Lawson
System Administrator, ACSR ISIS, Windows & Interplay
CBS News