On 06/10/10 08:49, Simon Wise wrote:
On 03/10/10 16:37, Jamie Bullock wrote:
Latency was the reason I switched to this system, the performance was set in a kind of low budget live TV studio, so with a camera on a person speaking the DV delay was unacceptable, the lip-sync was way too far off between the live actors voice and the image.
This project is to port a piece originally done with Max/Jitter to a Pd-based system. The main complaints they had were video quality and latency, so those are problems we need to solve.
Another note re video quality ...
The choice of graphics card, and the speed of the motherboard (i.e. how fast you can move data between drives, PCI bus, CPU and graphics cards) are important choices for video quality. The motherboard choice is tricky as some of the faster boards for this kind of work are aimed at gamers, and maybe not so well supported in Linux.
An Nvidia card with propriety driver is probably still the only way to go to give you reasonable control over the various scaling and syncing options to get the highest quality .. smooth scaling and no tearing etc.
The Intel graphics option may also be worth checking out, their drivers are properly open and much easier to keep up to date ... and they have been getting much better in the last year or so. I haven't explored this yet.
Forget ATI for this kind of work in Linux now .. maybe a year or more down the track this could change, maybe not.
Simon