Smart Render Video Codec - HQ HQX by Grass Valley - Edius tutorial ADDENDUM
Smart Render Video Codec - HQ HQX by Grass Valley - Edius tutorial ADDENDUM
This video is just a short addendum to a previous Grass Valley Edius tutorial video where I was giving examples of the smart render nature of the HQ and HQX codecs by Grass Valley.
In the previous video I'd given an example that wasn't technically correct, although the results and workflow were correct. This was due to the exporter being put into a certain configuration that where it didn't actually use a certain export parameter configuration.
So for the sake of thoroughness, I've decided to make this video just show even more clearly that the Grass Valley's HQ and HQ codecs are indeed operating as expected as a smart codec. In this example I use an extremely low quality offline version HQX render and re-export it at much higher parameter settings that shows no change in the subsequent render/export with regard file size.
For anyone asking themselves the question, what is a smart codec? Or, what is a smart render codec? Here's some basic information as to what one is and how it basically works.
A smart codec, or smart render codec. Is a codec/video clip that can be re-exported to the exact same settings as the source video file and be an exact copy that's not been re-rendered. Basically it can be seen as not really a render but a duplication of a file
For this to happen the source footage/file can only have cuts applied, anything such as grading, titles, dissolves etc. or any form of picture manipulation, will require a re-render, as there has obviously been picture/pixel changes applied.
For an intra-frame codec, such HQ and HQX, this smart render function will be applied from and to the start and end frame of any cut and/or join without any rendering whatsoever.
With an inter-frame codec, such as H.264 adn H.265 etc., the process of smart rendering, wherever available, is slightly different. Due to the GOP structure of any smart render capable inter-frame codec, any cut or join has to adhere to the source's GOP sequence. This basically means that an entire GOP length has to be re-rendered at cuts and join points in order to keep the GOP sequence itself intact. This is basically to make sure the placement of the I frames, or intra-frames element and GOP sequence settings are kept the same as those within the source file. This does require a very tiny re-render of a GOP length, so technically there is a very tiny difference but for all intent and purpose, the smart render is identical. Although maybe not down to the same byte/bit size, as is with an Intra-frame codec such as Grass Valley's HQ and HQX ones.
As mentioned in the video, here's a link to Anton's website:
https://www.videoproductions.com.au/
Here's a link the Edius product pages on the Grass Valley website, there's also trial downloads of Edius for those who are interested in the best NLE ever made. Yes, I'm a FanBoy :)
Edius 8: https://www.grassvalley.com/products/...
Edius 9: https://www.grassvalley.com/products/...
And here is a link to the Grass Valley forum:
https://forum.grassvalley.com/forum/i...
Basically, while an inter-frame codec can be frame accurate
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