James <wirel...@tampabay.rr.com> [14-06-07 17:52]: > <meino.cramer <at> gmx.de> writes: > > > > the Logitech c920 HD Pro webcam is able to deliver 1920xq080x30fps > > (H.264). > > Some interesting notes and comments at the bottom of this page: > > http://www.ideasonboard.org/uvc/ > > > Also, in the past, I have found the best comments on various camera > hardware in the relevant kernel driver. Sometimes that is a unique > driver, other times it is a unified kernel driver for a similar group > of video cameras. Sometimes you can go way back to where the kernel > driver for a given video camera first appeared (got supported) in the linux > kernel for detailed information on the limitations of a given piece > of hardware. Often, the poorer performance on Linux, was intentionally > due to the actions of the manufacturer, particular on max frame rate, > bit minipulations and other key parameter settings of the cameras. Once > folks learned the protocols (decoded them) on windows, they would make > those adjustments with windows software and reverse engineer the > driver software so as to be able to support various linux drivers. > > Logitech is very reasonable (at least compared to other vendors) but even > there newer hardware rarely works with the best of a given feature set, > until the product has been out for a while. If not, Logitech should > have a published interface specification so and to make reverse engineering > not necessary? > > Dunno know the specifics on the model your listing, as I've been out > of that 'game' for a while now, but all those tigers still have the same > stripes.... > > Good hunting! > hth, > James > > > >
Hi, I've git "somethiong" working for me: With vlc "Capture device" and a lot of setting I am able to wath and record if wanted the stream of the c920. BUT There is big delay between audio and video (audio delayed) and a smaller delay between reality and strem (which doesn't matter in my case). How can I fix the delay between video and audio? Best regards, mcc
