The Baselight system needs to work with high-bandwidth uncompressed data while providing real-time performance.
An E-180 video tape is able to hold 2 Gb of uncompressed data.
Also, because the tape ran at its usual speed, it took 90 minutes to record approximately 250 Megabytes of uncompressed data.
The final candidates are determined in a second stage using the uncompressed data from the disk for distance calculation.
FFmpeg contains more than 100 codecs, most of which do not just store uncompressed data.
Data Capacity and Speed figures above are for uncompressed data.
The uncompressed data is then shifted into the search window for the next repetition and so on.
Data capacity and speed figures above are for uncompressed data.
The process does take time, and gaining access to the disk takes noticeably longer than it would for uncompressed data.
It uses the last 2 kB of uncompressed data as a sliding-window dictionary.