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Glossary 377
Glossary
Symbols & Numeric
1080i/1080p
1080i or 1080p are the so-called Full HD resolutions. These have a resolution of 1920
x 1080 pixels. The "i" stands for "interlaced" (view page 383) and means that each
field is stored,
as with interlaced scanning. The "p" stands for "progressive" and
means that entire images are stored.
720p
This is the "small" HD resolution, which is sized at 1280 pixels x 720 pixels. The "p"
stands for "progressive", i.e. full images are always displayed.
A
Aliasing
Aliasing, or alias effects, are mistakes that appear during digital scanning of sounds,
videos or images when the sample frequency (in audio editing) or resolution (in video
editing) used are too low.
ATN:
This abbreviation stands for "Absolute Track Number". Which is the actual time code
of DV and HDV recordings recorded using the helical scan method.
Audio
This is then referred to as "audio" when the sound signal is saved directly as such on
the PC. The actual sound is recorded or played back here.
audioid
audioid is a process used to determine the title and artist name base on musical
properties. An Internet connection is required to access the audioid database.
AVCHD
Stands for "Advanced Video Codec Definition". It is an HD format for video cameras,
which has been developed by Panasonic and Sony. In comparison to the "HDV"
format, a clear improvement in quality can be seen here.
MPEG-4 AVC/H.264 is used for video encoding and AAC or AC3 for audio encoding.
The maximum bitrate is 25 Megabits/sec.