Date: Fri, 27 Feb 2015 12:52:49 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Da Rock <freebsd-multimedia@herveybayaustralia.com.au>, freebsd-multimedia@freebsd.org Subject: Re: webcamd, dvb, v4l2-ctl: "device not configured" Message-ID: <54F05A91.2090901@selasky.org> In-Reply-To: <54E7EDB8.9000008@herveybayaustralia.com.au> References: <54E7EDB8.9000008@herveybayaustralia.com.au>
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On 02/21/15 03:30, Da Rock wrote: > I'm trying to get something happening with ffmpeg and using the v4l > input to access a dvb card - which may well be trail blazing mind, but > there are points worth testing. However, it keeps coming back to me that > the device is not configured. Mplayer as such will work using dvb:// > > I'll be the first to admit that I'm not exactly an expert in the v4l > field (which is why I'm here). What I want to know is how I can tune the > card so that ffmpeg can then play with the stream. I know that it use > the v4l libraries and as such based on what I have read in the man and > docs says that "in theory" I should be able to control the card using > this. So I'm playing around and trying various tricks, but nothing is > working. > > I tried v4l2-ctl and it shows up my webcam just fine, but it shows > nothing else. If I then go -d /dev/dvb/adaptor0/frontend0 and use --all > or -D all I get is: > > VIDIOC_QUERYCAP: failed: Device not configured > Driver Info (not using libv4l2): > Driver name : > Card type : > Bus info : > Driver version: 0.0.0 > Capabilities : 0x00000000 > > So I'm mystified. Is this supposed to work? Or is it a loose thread on > the linux compat side like notify? > > Aside from attempting to get a tzap built (could anyone explain how to > adjust the szap Makefile in ports to do this? Change the name from > szap_s2 to something else maybe?) is there any other way to tune the > card? Preferably using perl, which would ultimately be the tool I'd use > to setup my system. > > I've tried near all the media systems, but frankly none meet my > satisfaction. Too complex, too unstable, (too lumpy, too bumpy - sound > like a Suess story :) ) just not light enough or suitable for the > environment. So I'd like to build my own without all the cruft - one > I've had in mind for some time now. Hence this endeavour. Prior there > was no ffmpeg with v4l, ffserver had faults, went to avserver but it > needed rebuilding from scratch. Now ffmpeg has v4l I thought I'd kick it > in the guts again and see... > Hi, I think libv4l2 is not used for DVB access. --HPS
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