MacroSystem Digital Video HDV-Recorder Uživatelský manuál stáhnout pdf (Strana 109)

109

Bogart SE 5 User manual

Chapter 8: RenderBooster

8.1 Introduction

The RenderBooster is an optional product for your Casablanca

system. It consists of a transcoding USB stick – more on this

later – and a software program that has already been installed

on your system with Bogart SE 5 and that must be activated.

In the next few sections, you will learn everything regarding the

functionality and maintenance of the RenderBooster.

8.1.1 Area of application

Many Casablanca aﬁcionados vividly remember the ‘Render

Accelerator Option’ for the original Casablanca editing system.

It was basically a faster processor, making the time intensive

effects rendering more speedy.

Since then (1996), CPU power has dramatically increased. The

Motorola processor in 1996 was clocked at 25 MHz, now the

top of the line ‘S-6000’ has 3.3 GHz – and multiple cores, too.

This (theoretically) makes it thousands of times faster than the

then-state-of-the-art original.

But rendering speed is still lacking. Not so much for rendering

video effects – even in high deﬁnition, there is almost no more

related waiting time. Plus, the background rendering allows the

user to continue his work while the calculations are done in the

background.

The new challenge is called ‘transcoding’. Since today’s world

has not settled on just one video standard, it is absolutely

common, even essential, to convert a video ﬁle into other

formats for compatibility reasons. There are many different

camcorder formats to begin with – and it is often desirable to

create a Blu-ray disk, a common DVD, plus a few different PC/

Mac/Smartphone compatible ﬁles from a ﬁnished project.

And this is where today’s rendering time is painful. Making a

Blu-ray compatible HD video stream out of HD footage takes

a long time, even with fast CPUs. And it gets worse: Making

a DVD that looks good is a challenge – the ‘down conversion’

is a complex task. The common software codecs always offer

compromises – fast rendering usually means lower image qual-

ity. A difﬁcult trade off.

8.1.2 The product

MacroSystem has now tackled these issues with the new

‘RenderBooster’ – a device that plugs onto a USB port just like

a thumb drive. The small, elegant stick packs a lot of hard-

ware power – it basically is a small computer on its own, with

a highly specialized processor. It handles just the transcoding

(the de-interlacing, the scaling, and the encoding), nothing else

– but it does that in a state-of-the-art quality, and far faster

than high end mainstream processors. A true specialist.

8.1.3 The speed

The RenderBooster can transcode any HD project into Blu-

ray, DVD or H.264 (TS) formats. The required time is about 1.2

to 1.4 times the runtime of the video. A 60 minute project will

require just between 72 and 84 minutes of rendering time. This

time includes the transcoding (faster than real time) and the

‘overhead’ (massive amounts of data have to be copied back

and forth).

Compared to a standard ‘S 4000 Pro’, this means that making

a Blu-ray in Arabesk is about 12 times faster with the Render-

Booster.

8.1.4 The image quality

That is a dramatic speed increase for sure – but there’s more.

The quality of the hardware transcoding is superb, far better

than the common software encoders used not only by Bogart

SE, but by many other PC/Mac based editing systems too.

This allows a new quality mode for HD Arabesk projects – you

can now get 90 minutes of pristine Full HD AVCHD material

onto a double layer DVD media (45 minutes onto a single layer

media). Almost 240 minutes on a single layer BD, 8 hours on a

double layer (50 GB) BD!

8.1.5 The power consumption

Instead of using the power hungry main CPU (120 Watts at full

capacity) for transcoding, using the low power consumption

‘RenderBooster’ (5 Watts) will save a signiﬁcant amount of

energy. When creating a typical Blu-ray, savings of about one

kilowatt hour are common.

8.1.6 Usage

The most common-use case for the ‘RenderBooster’ is the

creation of DVDs and Blu-ray disks in both SD and HD for-

mats. These tasks are handled by Arabesk 5, which auto-

matically detects the ‘RenderBooster’ (if the required add-on

product has been activated by typing in the key code).

The ‘RenderBooster’ is also used in the ‘Export Storyboard’

feature. It allows very fast state-of-the-art conversions. SD and

HD projects can be exported in H.264.ts formats which can

be played back by PCs, Macs and many other devices. SD

projects can also be exported in the very common MPEG-2

format. The data rate is user selectable.

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