Date: Sun, 24 Apr 2005 23:10:36 -0300 From: Mario Sergio Fujikawa Ferreira <lioux@FreeBSD.org> To: freebsd-multimedia@freebsd.org Subject: Re: Help with TV capture (mplayer/brooktree/audigy) Message-ID: <20050425021058.48738.qmail@exxodus.fedaykin.here> In-Reply-To: <20050421095950.GB3188@puff.jakemsr.gom> References: <20050421021909.28497.qmail@exxodus.fedaykin.here> <20050421102551.12ebb916.steve@sohara.org> <20050421095950.GB3188@puff.jakemsr.gom>
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--x+6KMIRAuhnl3hBn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Apr 21, 2005 at 02:59:28AM -0700, Jacob Meuser wrote: > On Thu, Apr 21, 2005 at 10:25:51AM +0100, Steve O'Hara-Smith wrote: >=20 > > > 2) Every few seconds the video stream seems to choke; thus, > > > giving me an effect similar to the famous interlaced "blinders > > > effect" so I added a deinterlacer filter > >=20 > > Sync detection problems perhaps. >=20 > this can be tweaked a bit. >=20 > look for SYNC_LEVEL in the driver. try ADC_CRUSH instead of ADC_SYNC_T. >=20 > to me, it is a bit less interlaced looking. the linux bttv uses either > ADC_CRUSH or 0 for this, BTW. I'm building a kernel right now with this modification to /usr/src/sys/dev/bktr/bktr_core.c Any other indications on what we could do INSIDE the driver to make more reliable, some improvements at the signal handling...etc? I am not advocating adding a ring buffer there since that it is more appropriate for application level than kernel driver interface. Though it is alwaays something to propose in both FreeBSD-arch and FreeBSD-multimedia I am open for suggestions. Let me know if there are other hacks you think would be helpful. Regards. --=20 Mario S F Ferreira - DF - Brazil - "I guess this is a signature." feature, n: a documented bug | bug, n: an undocumented feature --x+6KMIRAuhnl3hBn Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFCbFGyrxEiaFLzGQwRAlEdAJ9DV2GtUkpFMfUK8ho6MCgZRej60wCfQxyT EZ7JQkxqHAJJO538pbwZ528= =WJnt -----END PGP SIGNATURE----- --x+6KMIRAuhnl3hBn--
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