X5

MPEG-4 encoder 347
Note: We recommend that only advanced users make adjustments to the advanced
settings. You can use the technical specifications of your playback device to help
with this.
Advanced video settings
Generic
MPEG-4 preset
Different presets located within the encoder.
(A)SP@L0-L5: (Advanced) Simple Profile in Level 0-5
(Q)CIF (Common Intermediate Format): CIF is a video format produced as soon as
1990 with the video compression format H.261. At that time, the format was used for
video telephone conferences.
The "Q" in QCIF stands for "Quarter", and since resolution is halved in terms of height
and width compared to CIF, the entire size is only a quarter of CIF.
QCIF was popular with mobile telephone manufacturers, since the resolution of 176 x
144 pixels was sensible for the first affordable SmartPhones (144 x 176).
(Half)D1: D1 corresponds with MPEG-2 DVD. HalfD1 has exactly half of the entire
number of pixels, meaning that the pixel number of the height and weight is 2/3 of D1.
720p: Video stream with a resolution of 1280 x 720p (progressive).
Apple iPod: Apple iPod-compatible stream.
Sony PSP: Sony PSP-compatibler stream.
Profile/Level
Profiles: Profiles define the encoder properties that are supported.
Level: The level determines which bit rate and resolution are possible for the video.
Picture type
"Picture type" specifies which parts of a frame should be used as the basis for the
encoding:
• Frame: A frame is a single image from a video sequence, also called a full image.
• Field: A half-image, two of which combine to produce a frame. Read more about
this explanation regarding "Interlace (view page 359)".