X2

294 MPEG-4 encoder settings
CPB size
This sets the size of the "coded picture buffer“ in bits. This is the buffer where the encoding
Init delay (90 kHz)
is carried out. The larger the buffer is, the better the results will be, but the processing will
also take much longer.
Image and sound offset is compensated as per the source material.
Tip: Detects asynchronicity that should be compensated directly in MAGIX Video Pro X2.
Dest delay (90 kHz)
Certain mobile playback devices create an offset of image and sound during playback,
even if material is exactly synchronous. This option ensures that the device offsets the
image for the value entered to counteract asynchronicity.
Example of calculation
Suppose a device creates an offset of 13 ms, then the following calculation must be made:
Note: Only positive offsets are compensated, i.e. image comes after the matching sound.
Aspect ratio
In the film industry, this is an indictation of the ratio between width and height of a
rectangle, monitor, or screen.
ent sizes available:
(typical for TV sets) or 16:10 (widescreen-flatscreens,
3:2 for 35mm films and photos. In cinemas you mostly find
uadratic pixels (PAR=
1:1), for analog
television monitors (PAL at 4:3)
128:117.
There are 3 differ
•
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
widescreen notebooks),
1.85:1.
•
Pixel Aspect Ratio (PAR, pixel aspect ratio: Indicates the aspect ratio of individual
pixels. The majority of computer monitors have q
• 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.