SpecificationParameter
compressed or uncompressed
Compression
24-bitFill Only
32-bitFill and Alpha
1920×1080 pixels max. image
size
1080 Formats
1280×720 pixels max. image
size
720 Formats
Global-Store: 4 Gigabytes
Cache
Max. File Size
ME-Store: 8 Gigabytes Cache
Table 12: Audio File Specifications
SpecificationParameter
Multi-Channel Wave (.wav)File Type
HD — 24-bit AES3 linear PCM
uncompressed (8/16/32-bit
linear uncompressed is allowed
but playback bit-depth is
unchanged)
Audio Data
SD — 20-bit
48kHz
Frequency
2Channels
File Naming
The le name can be up to 32 characters in length, but
should be up to a maximum of 12 characters, so that it
can be displayed on the menus properly. The name can
contain letters, numbers, spaces, dashes, underscores,
and, periods, but should not contain symbols.
If you are naming an animation, each le must be
numbered in the sequence that it will play out. The
following restrictions apply to le names for animations:
• Each le must use a 2-digit to 5-digit number,
including all the leading zeros.
• Each le in the sequence must have the same
numbering scheme.
• The rst le in a sequence must be numbered 0.
• The le name and number must be separated by an
_.
• Audio les and video les must have the same name
to be associated with each other.
For example, a 90-frame animation would start with
Anim_0000.tga and end with Anim_0089.tga
Media-Store Audio
Audio can be added to the playout of a Media-Store
channel either by loading the le directly, or by
associating the audio le with the video you want it to
play out with. When you load the clip, the switcher will
automatically load the associated audio le.
Note: Global-Store Audio is only supported on the newer Frame
CPU, 4810AR-002 (1022).
Keep the following in mind:
Keep the following in mind when working with
Media-Store audio:
• Audio les should be 24-bit uncompressed WAV
les at a 48kHz sample rate. Bit depth of 8, 16, or 32
are also supported, but playback bit-depth is not
changed.
• Audio is embedded in the ancillary data of the video
stream that the Global-Store channel is included in.
• The number of Global-Store Audio channels is the
same as the Global-Store video channels.
• Audio is loaded into the corresponding Global-Store
Audio channel as the Global-Store video channel.
For example, if you load a clip with audio in video
channel 2 the audio is loaded into audio channel 2.
• Loading a clip with audio into a Global-Store Audio
channel only loads the audio and will not load the
corresponding video.
• An audio le does not need to be of the same length
as the animation it is associated with.
• A Global-Store channel can be loaded with audio
only.
• An ME-Store channel cannot load audio.
• Audio is played the same way an animation is played.
• The length of an animation is set my the video rate
the switcher is operating in. Audio is xed at 48kHz.
If your audio and video is synched at a particular
video rate, playing the media at a different rate will
result in the audio and video being out of synch.
• Audio only looping is independent of video looping.
• Video with audio will only auto start when it is taken
on-air, and not when it is loaded or the properties are
changed (as with video only media).
• Audio always plays out at 1x speed, even is the video
is playing faster or slower.
Loading Media Files
Media les are stored on the hard drive and loaded into
the Global-Store or ME-Store caches when needed.
Media les can be loaded either by navigating to the le
on the hard drive, or my entering the media number on
74 • Media-Store — Acuity Operation Manual (v9.2)
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