Date: Tue, 11 Feb 2003 11:35:19 -0800 From: Nicholas Esborn <nick@netdot.net> To: Steve O'Hara-Smith <steve@sohara.org> Cc: multimedia@FreeBSD.ORG, dhenin@cyclopes.org, jit@wanadoo.fr Subject: Re: CALL FOR TESTERS - ffmpeg TV formats Message-ID: <20030211193519.GA8846@carbon.berkeley.netdot.net> In-Reply-To: <20030210075106.57230761.steve@sohara.org> References: <20030206191147.2a820325.steve@sohara.org> <20030208213739.27dc0d40.steve@sohara.org> <20030208232607.GA26250@carbon.berkeley.netdot.net> <20030209084733.33eace3b.steve@sohara.org> <20030210010229.GB26250@carbon.berkeley.netdot.net> <20030210075106.57230761.steve@sohara.org>
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On Mon, Feb 10, 2003 at 07:51:06AM +0100, Steve O'Hara-Smith wrote: > On Sun, 9 Feb 2003 17:02:29 -0800 > > /usr/local/bin/bsdbktr_tvtune 792 > Tunes in BBC2 on my UPC feed - it only groks frequency not > channels. I tried using bsdbktr_tvtune, using NTSC frequencies, right before running ffmpeg, but I don't get any signal. I think there's some tuner-related setting on my bktr card (Hauppage, I think) that is extremely finicky. I've tried all sorts of things to set the channel prior to recording. Seth Kingsley wrote a little program that uses the TVTUNER_SETCHNL ioctl. If I use it while fxtv is running, the channel changes properly, and fxtv even notices and updates its display to reflect the new channel. However, if I run it before or during ffmpeg, I get static. The first time I do this, there may be a bit of signal, as though the tuning was close but not great. If I run it a few more times, after the 2nd or third time there is nothing but static. Very strange. The only solution I've been able to make work is a hacked version of fxtv, which exits as soon as it initializes the card. It's a really ugly solution though, it requires an X server to run. I've done a trace on fxtv, and it uses a huge number of meteor and bt848 ioctls repeatedly, so it's hard to tell what's actually relevant. -nick > NE> It would be nice if ffmpeg had some interface to allow drivers to > NE> accept options from the command line. >=20 > Yes it would! >=20 > --=20 > C:>WIN | Directable Mirrors > The computer obeys and wins. |A Better Way To Focus The Sun > You lose and Bill collects. | licenses available - see: > | http://www.sohara.org/ --=20 Nicholas Esborn Unix Systems Administrator Berkeley, California To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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