-_V enables verbose mode and prints the values of parameters used to
setup the hardware for audio and video transfers.
<_f_i_l_e_n_a_m_e> specifies the name of the file to read. If the ----aaaa2222 option
is chosen audio data will be in the separate file
ffffiiiilllleeeennnnaaaammmmeeee....aaaaiiiiffffcccc. If the ----aaaa3333 option is chosen audio data will
be embedded in the QuickTime file ffffiiiilllleeeennnnaaaammmmeeee.
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
The utility aaaavvvvppppllllaaaayyyybbbbaaaacccckkkk uses the Digital Media libraries to output a
sequence of video images and audio samples from various Silicon Graphics
digital media devices. As of this release audio data originally captured
with aaaavvvvccccaaaappppttttuuuurrrreeee in a separate AIFC file played in sync with the video
using the ----aaaa3333 option. If the audio and video hardware are locked to a
common external reference signal the audio and video data are guaranteed
to remain synchronized. If either device drops data synchronization will
be recalibrated. Visual or audio artifacts may be noticed at this time.
aaaavvvvppppllllaaaayyyybbbbaaaacccckkkk is best suited to playback large volumes of audio and video
data in realtime. This is possible if a striped logical volume disk
array of sufficient size and configuration is used with the XFS file
system. Before copying data to disk from an external source test the
performance of the array using the tool ddddiiiisssskkkkppppeeeerrrrffff. It may be necessary to
reconfigure the array with ddddiiiisssskkkkaaaalllliiiiggggnnnn before realtime playback can be
achieved.
See ////uuuussssrrrr////sssshhhhaaaarrrreeee////ssssrrrrcccc////ddddmmmmeeeeddddiiiiaaaa////mmmmoooovvvviiiieeee for details on how to create and edit
QuickTime files using the SGI movie library.
All of the video control parameters including output timing and data
format are automatically set by the tool. If audio output is enabled
default audio device is used. The audio control parameters can be
adjusted with aaaappppaaaannnneeeellll.
The ----vvvv option specifies a text file containing V-LAN edit commands.
Robust error checking is not performed, therefore, unpredictable behavior
should be expected if invalid V-LAN commands are issued or if the
commands are issued in the wrong order. Permissions and ownership of the
command file must be properly set. If V-LAN control is chosen and the CCCCOOOO
((((CCCCooooiiiinnnncccciiiiddddeeeennnncccceeee OOOOnnnn)))) and SSSSCCCC ((((SSSSeeeetttt CCCCooooiiiinnnncccciiiiddddeeeennnncccceeee)))) commands are issued the GPI
output of the video device must be connected to the V-LAN receiver in
order to accurately initiate the data transfer. This option should be
used in conjunction with the ----tttt flag. A special cable must be
constructed for the trigger output. See AAAAppppppppeeeennnnddddiiiixxxx AAAA of the DDDDIIIIVVVVOOOO XXXXIIIIOOOO BBBBooooaaaarrrrdddd
OOOOwwwwnnnneeeerrrr''''ssss GGGGuuuuiiiiddddeeee for details.