Hi Tim, On Mon, 29 Jun 2009 11:34:50 +0100 (BST) Tim Williams <tmw@xxxxxxxxxxxxx> wrote: > > Hello, > > I'm trying use a WinTV USB adaptor which uses the usbvision driver to > capture the output of a video camera for streaming across the web, the > idea being that there is a reliable local recording, even in the event of > a computer crash, while allowing the remote viewers to see the proceedings > live without needing to have two separate cameras. > > Unfortunately there is a catch, i'm using flash to do the broadcast > and flash (in common with a lot of other software of this type) doesn't > have the ability to set the input type and picture format, so you are > stuck with the default, which is the rf-tuner. I have managed to make my > own bodged driver which disables the rf-input so that I can get a picture > via s-video, but it is stubbornly stuck in black and white, which i'm > assuming is some kind of colour format problem. > > If I use KDETV to look at the picture then everything comes through in > colour, so this would seem to be a problem with the defaults built into > the module being incorrect for my circumstances. Rather than carrying on > with my bodged driver (this is the first time I have ever attempted to > modify a C programme), what would be really great is away to achieve one > of the following : > > 1) Set the default input, tv standard and pixel format using module > parameters in modprobe.conf > 2) Get the driver to 'remember' it's current settings when switching > between applications. The windows driver for these devices does this, so > all I have to do under windows is start up WinTV, make sure I have a good > picture, close it down again and then start up the video broadcast in > flash. > 3) A way to change the device settings using a 3rd party app even when the > main video device is in use and can't be accessed. I've tried using v4lctl > to set the parameters before starting a capture, but if the flash capture > is active, then I (unsurprisingly) get device in use errors. If I use v4lctl > before starting flash, then the settings don't stick. The capture box becomes > active briefly (there is a red light on the box which indicates this), > presumably accepts the setting and is then powered down again, causing > the new setting to be immediately forgotten. > > Any thoughts or help would be much appreciated. > I remember a guy that did the trick with the vloopback device. Searching a bit on the Internet, it seems that flashcam http://www.swift-tools.net/Flashcam/ can be convenient for your needs. HTH Regards, Thierry -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
