Re: support MJPEG based webcams
- From: Ioannis Nousias <s0238762 sms ed ac uk>
- To: cheese-list gnome org
- Subject: Re: support MJPEG based webcams
- Date: Thu, 13 Mar 2008 13:08:26 +0000
Thanks, I did. My distro (ubuntu gutsy) doesn't meet cheese's
prerequisites, so I've installed hardy on a VM, but usb is flaky (I can
rarely get it to map on the VM). By the way I've met a segfault (why
does it start from index 1 when looking for available webcams?). I'll do
some tests later.
yeah, we are doing such a probing, but we do not insert a decodebin
element. if you want, you can have a look into cheese-webcam.c and see
if you are able to add your device somehow!
As far as I understand, 'decodbin' is non-intrusive when the stream is
uncompressed. It simply forwards it. It probably is cleaner to simply
add a 'decodebin' (and probably an 'ffmpegcolorspace' as well) in the
pipe rather than having explicit checks for possible cases, since these
are already done by the 'decodbin'. Similarly why I didn't suggest using
'jpegdec'. Mind you, I doubt there is a webcam with some other form of
compression. In fact, mine is not even a webcam. It's a regular camera
with a webcam mode of operation. However, my rule of thumb is to make as
little assumptions as possible.
Anyway, I'll play with it and see how it behaves on different devices.
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