360 Systems MAXX Operation Manual

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360 Systems MAXX Operation Manual Manual pdf 55 page image

DV and Graphics 53Proper key and fill operation requires two clips of identical length, using the following namingconvention: (the clip “myfile” is used as an example)Fill name: myfileKey name (Alpha): myfile_. Note the underscore at the end of the key clip.When a clip is opened/cued on Channel 2, Image Server automatically looks foranother clip with the same name, plus a trailing underscore. If the clip is found, it is loaded onChannel 3. Typically, the Channel 2 clip contains the “fill” material, while the Channel 3 cliphas the “key” (or alpha) file.An automation system, could, for example, issue a VDCP Cue command to Channel 2for a clip called “logo”. Channel 3 would automatically be loaded with clip “logo_”. A Still orPlay command sent to Channel 2 would cause both Channels 2 and 3 to display the fill andkey clips, respectively.Note that the VDCP checkbox option to “show first frame” for a Cue command isignored for channels in ganged mode. The automation system must issue a Still command toChannel 2 to achieve this effect.Ingesting a TARGA file via FTP automatically creates a key clip and a fill clip, each asingle frame in length. For example, if file “xyz.tga” is transferred to an Image Server via FTP,then a pair of single-frame clips is created: “xyz” and “xyz_” containing the fill and keymaterial.Still FramesA single-frame clip (a “still”) may be inserted into a playlist. The length of a still willappear as one frame in the clip list. When a still is encountered, the playlist will pause andhold the still image until a Play command is issued, at which point the playlist will continue tothe next clip in the list. When using the GUI, the space bar (a keyboard shortcut) will alsoadvance the playlist. Stills may be placed anywhere in a playlist. In fact, a playlist may beentirely composed of stills.Stills are created when TARGA files are ingested. (See Page 45 for a description ofTARGA file ingest.) It is also possible to create still frames from video clips that use a 1 frameGOP (I-frame only.) When editing the clip, make the In and Out points the same frame. Thisframe will be displayed when the clip is played in the Playlist.