you want it to play out with. When you load the
clip, the switcher will automatically load the
associated audio file.
Keep the following in mind:
Keep the following in mind when working with
Media-Store audio:
• Audio files should be 24-bit uncompressed
WAV files 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 Media-Store
channel is included in.
• Both of the audio channels are associated
with an AES port for that ME. Channel 1 is
locked to AES 1 and channel 2 is locked to
AES 2.
• Audio is loaded into the corresponding Media
-Store Audio channel as the Media-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 Media-Store
Audio channel only loads the audio and will
not load the corresponding video.
• An audio file does not need to be of the same
length as the animation it is associated with.
• Audio is played the same way an animation
is played.
• The length of an animation is set by the video
rate the switcher is operating in. Audio is
fixed 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 if
the video is playing faster or slower.
Loading Media Files
Media files are stored on the hard drive and
loaded into the Media-Store caches when
needed. Media files can be loaded either by
navigating to the file on the hard drive, or my
entering the media number on the memory
keypad. The length of time it takes to load a file
depends on the size of the file, and/or the length
of the animation. If you are working with a
number of large media files, you may have to
clear the cache before you load a new file.
If there is an audio file with the same name (and
in the same directory) as the video file, it is
loaded at the same time as the video. Video files
with associated audio files have a small speaker
image on the thumbnail. Audio and video files
do not need to be the same length.
Table 11: Icon Meaning
Description
Icon
The media item had an alpha associated with
it that will be loaded into the secondary
channel when this media item is loaded.
The media item has associated audio that will
be loaded into the audio channel.
The media item is an animation with multiple
frames.
The media item is a audio file with no
associated video.
There is something wrong with the audio file
and it cannot be loaded.
There is something wrong with the media item
and it cannot be loaded.
Tip:
If you use a large animation in your production, it is a good
idea to load that animation before you start your show so that
it has plenty of time to load.
To Load a Media File
Note:
When you load a media file that contains an alpha, the
alpha is loaded into another media-store channel that is assigned
for the alpha in the Auto Key setup. This uses two channels for
the video and alpha.
Note:
The approximate size of media files reported on the menu
is the uncompressed size in RAM of the original file, before the
it is converted to the video format the switcher is operating in.
The actual size of the file in cache can be different than the size
of the uncompressed file in RAM, depending on the format that
the original file was captured in.
1.
Press
HOME
>
More
>
Effects
>
Media Store
,
or press the source button for the
media-store channel.
Tip:
If you know the number of the media file you want to
load, enter it into the keypad on the memory module and
press ENTER to load it into the selected media-store
Ultrix Acuity Operation Manual (v10.1) — Media-Store • 61