Hi, 2010/6/9 Asho Yeh - 阿信 <asho...@gmail.com>: > Hi, > I am new to the UVC project. Currently I am working on video > conferencing on Linux and met some performance issues. I hope you experts > can help me to solve these. > My target board is > VIA CLE266 which onboard an VIA C3 1Ghz CPU. > 512MB DDR333 Dimm. > Logitech C100 webcam. > 480p mpeg2 video playback with mplayer and xvideo costs 20~30% of CPU > powers. 50~70% of CPU powers with 720p mpeg2 video file. > However, when I execute luvcvideo, the console shows > Video driver: x11 > A window manager is available > I was wondering that luvcview lacks XVideo support or UVCVideo doesn't > provide the video format that supports XVideo?
luvcview uses SDL for rendering (yuv overlay), this in turn uses xvideo internally. I actually did some tests a while back and I couldn't find any difference in terms of performance between SDL and xv direct rendering, other people may have a different idea. uvcvideo doesn't provide any formats, it just supplies whatever is available in the hardware, usually MJPG or YUYV > Another problem is skype. In skype chat & video window, it ate 100% of > CPU powers and A/V was out of sync. I didn't know which one is the > bottleneck in skype. That's why I asked for help here. Skype is closed source so I don't know anything about its internals, sorry. Best Regards, Paulo Assis > I am new to the video processing in Linux, so some problems are > conceptual. Any information and wikis are welcome. > Thanks for reading this mail. > Best regards, > Asho > _______________________________________________ > Linux-uvc-devel mailing list > Linux-uvc-devel@lists.berlios.de > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel > > _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
