As explained, in the File Compression section, the Graphics Plugin will try to guess what the NLE system will ask for next and ask for the frames and fields from the renderer in advance. It is possible to disable this feature but this will be the safe mode described earlier and is only for use if there are problems with the pre-fetching.

When tuning the performance, the question is how aggressive the pre-fetching should be. The current releases use more aggressive pre-fetching than earlier, so the key thing is to configure how many fields to pre-fetch, that is, how many graphics requests should be on the network from one client at any given moment. It is also an option to ask the system to pre-fetch the whole clip, and it would probably give a reasonable performance; however, this will block the Viz Engine for other users who want to edit their effects, scrub the timeline or render. In general the default setting of pre-fetching 20 fields is a good compromise, but the setup might require a different value and anything between 5 and 30 are acceptable values.

See Also

• File Compression