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SynthEyes will normally produce an IFL (image file list) file for each file sequence, and write it into the same folder as the images. The IFL serves as a reliable placeholder for the entire sequence and saves time re-opening the sequence, especially on networks, because SynthEyes does not have to re-check the entire sequence. If the IFL file conflicts with your image-management system, or you frequently open the same image sequence from different machines, producing a different file name for the images from each computer, you can turn off the Write .IFL files for sequences preference.
IFL files are required for survey shots, however.
Note : For maximum reliability, you should always open the first image in a sequence. Although SynthEyes can open any image, that image defines the beginning of the shot. Other software, such as After Effects, may interpret the shot separately. Use the Start/End controls on the Shot setup panel or the time bar to control what portion of the shot you track (this gives the most flexibility for editorial changes as well).
The "Read 1f at a time" preference (on the Shot menu and in the preferences) controls whether SynthEyes tries to read multiple images from a sequence or movie simultaneously, or only one at a time.
This control is ON by default, ie SynthEyes is forced to read only one frame at a time, which is a lower-performance mode. It is on by default because a substantial number of customers encounter problems with multi-threaded reading when their images are on networked disks—the networking software isn't accustomed to having 8- 24 threads each ask for a different file at exactly the same time, and the network drivers or disks may hang or hiccup.
Tip : Try turning Read 1f at a time off if your images are on a local disk! This can increase shot-loading rate by several times, especially on RAID disks.
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