IQUDC30/IQUDC31/IQUDC32/IQUDC33
Logo Insertion
Issue 1 Rev 4
Page 100
© 2016 SAM
2.3 Filename convention
Logos must be packaged in a directory with the same name as the logo. Logo files must take
the form <logo_name><specifier>.<extension> where <logo_name> equals the directory's
name.
A <specifier> of the form _<standard> indicates that this logo is intended for this specific
standard. If no _<standard> specifier is included, then this logo is the default for any
standards which do not have a standard-specific logo.
Possible values for <standard> are: 525i, 625i, 720p, 1080p and 1080i.
A <specifier> of the form _<index> indicates that this file is part of a multi-file sequence for an
animated logo. Any non-negative decimal value may be used for <index>. The files in a
sequence are sorted in increasing order of their respective <index>es by numerical value.
Leading zeros do not affect the sort order, and it is not required that the <index> values are
contiguous, however all images in a multi-file sequence must have the same width and
height.
If both _<standard> and _<index> specifiers are used, then they should be written as
_<standard>_<index>, not _<index>_<standard>.
The <extension> is not used as the logo option will auto-detect the image format.
Examples of valid logo filenames are:
2.4 Displaying logos
You can access the logo insertion controls via the Output Control (see section 5.3.10). Select
the logo from the list and adjust its position and transparency as required.
The logo files should contain a key (there is no “self key” option), but if no key is found then
the entire logo image will be displayed, i.e. a rectangle cut-out of the logo image size.
RGB graphics formats are automatically converted to SD and HD color spaces and levels.
YUV graphics will be presented as is for both HD and SD. The YUV range is assumed to be
16 (black) to 235 (white). Other values are clipped. Key channel levels for all graphics formats
are 0 (off) to 255 (100% key).
In linear mode “Transparency” controls both key gain and logo gain; in pre-shaped mode only
key gain is controlled.
Logo name
Type of logo
C:\logos\brandlogos\brandlogo.jpg
Single logo jpeg file
C:\logos\brandlogos\brandlogo_625i.png
C:\logos\brandlogos\brandlogo_1080i.png
Two versions of the logo targeting
different output standards
C:\logos\brandlogos\brandlogo_001.tiff
C:\logos\brandlogos\brandlogo_002.tiff
....
C:\logos\brandlogos\brandlogo_064.tiff
Animated logo of sequence length 64
