Page 340 - Manual_Movie Edit Pro 2021_EN_Neat

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Bit rate (Bits/s)
• In "Constant bit rate" mode: Exactly those values entered are applied to be able
to calculate the size of the video precisely.
• In "Variable bit rate" mode: The values entered here are applied to the video as
an average as a guideline. The size of the video to be exported can only be
approximated.

HSS rate
This is the maximum bit rate that should be present in the video stream, i.e. maximum
number of bits that may be transferred to the decoder.

Note: This option is only available in "Variable bit rate" mode. "Use HRD" must also
be activated.

Aspect ratio
In the film industry, this is an indication of the ratio between width and height of a
rectangle, monitor, or screen.

There are 3 different sizes available:
• Picture Aspect Ratio (also Display Aspect Ratio, DAR): This indicates the
desired aspect ratio of the video to be exported. Here are some examples of
typical aspect ratios: at home 4:3, 16:9 (typical for TV sets) or 16:10
(widescreen-flatscreens, widescreen notebooks), 3:2 for 35mm films and photos.
In cinemas you mostly find 1.85:1.
• Pixel Aspect Ratio (PAR, pixel aspect ratio: Indicates the aspect ratio of
individual pixels. The majority of computer monitors have quadratic pixels
(PAR=1:1), for analog television monitors (PAL at 4:3) 128:117.
• Sample Aspect Ratio (SAR, also Storage Aspect Ratio): Aspect ratio of the saved
resolution (number of pixels), e.g. 720:576 at PAL. It also calculates picture
aspect ratio and pixel aspect ratio: SAR = DAR / PAR.

Note: In the standard case, the "Aspect ratio" remains set the way it is. You should
only change the settings if the resulting video is exported distorted or stretched or if
you need to correct the video because it is in the wrong aspect ratio.

GOP structure

Max GOP length
Determines the maximum GOP (view page 348) length. High values mean improved
compression. Lower values create stronger security protection and enable improved
access to individual frames for processing the video.

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