![]() In general lessĬompression means a lower overhead. The required processing power to decode the video. Using heavily compressedĬodecs such as H.264 makes it less important. ProRes makes this part extremely important. Using lightly compressed codecs such as PhotoJPEG or ![]() The required compressed bit rate you need to stream from your mass Video is extremely tricky to get right, you have to balance: The only way to avoid the multiple copies is by using a Mac Pro. Then it renders into it's own memory then this is DMAed into theįramebuffer used by the IGP before being output. ![]() Output is always being done by the IGP and there is always a copy of The way the graphics switchingīetween the IGP and the discrete graphics works means that the DVI It's no worse than what happens in a Core i5/i7 based MacBook Pro or The memory system is designed to cope with it. It doesn't really matter much that the IGP shares with main memory as > dedicated video RAM, and steal RAM from the main system instead. > In general Minis aren't ideal video machines because they don't have On Wed, at 01:00:10PM -0400, Christopher Ashworth wrote: Thanks!Ĭhange your preferences or unsubscribe here: WHEN REPLYING, PLEASE QUOTE ONLY WHAT YOU NEED. Shouldn't this machine be able to handle this? If not, what are the minimum suggested specs for QLab? Does anyone have suggestions on what could be causing this lag? Are there ideal and not ideal codecs for video clips? I've even had problems like this with simple audio clips-during a production of The Producers, with gunshots timed to the beat, I had to add a half dozen blank audio cues just to hope to get the computer to fire the real ones the split second I hit go. For my current project, my video clips are 1024x768 sized MOV files either using Animation or H.264. I'm pretty Mac savvy and have tweaked every setting I can find, and disabled anything that isn't necessary-nothing is going to sleep, there are not unnecessary programs running, etc etc. I know this isn't an amazing machine, but I think it should be more than sufficient to do what's being asked. I believe its been upgraded to 4gb of ram (it's not in front of me at this moment). My machine is the Early 2009 revision (Macmini3,1). Sometimes it'll be perfectly fine, but often if there hasn't been any activity for a few minutes, that's when I have problems. I have load cues for all my files, so everything is in memory ready to play. In general it runs everything just fine, but often when starting a video clip, the first half second will get cut off (sound and/or video) or otherwise stutter. But I'm finding it has trouble when it comes to video. Because none of the theatres in town have Macs, I bought a used Mac Mini to run the software for the projects I design for, so that I'm not giving them my laptop. ![]() Been using QLab for about a year now and I absolutely love it. ![]()
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