Date: Sun, 30 May 1999 13:47:43 +0200 (MET DST) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: multimedia@freebsd.org Subject: vic/bt848 video corruption -- probably solved Message-ID: <199905301147.NAA16765@labinfo.iet.unipi.it>
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Hi, i finally managed to investigate a bit more the video corruption problems that Roger, I and others were experiencing with vic and other video apps when using the bt848 driver. Such problems seem to cease when i set the vic 'fps' selector to the max (30fps). I tested this on several machines -- starting vic with the default setting (8fps) on FreeBSD 3.1 (and 3.x/4.x as well i think) causes video corruption which show up from frequent short black lines on a few lines at the top, to completely garbled image starting at 1/3 of the frame -- this depends on the hardware and who knows what. In any case, I know for sure why we did not have this problem on 2.2.x -- the FPS ioctl was not implemented/implemented differently in that release of the bt848 driver and/or vic so moving the slide did not affect the bt848. Apologies are due (i think) to the PCI code maintainers who were suspected as responsible of the misbehaviour. Back to our regular (and now good quality) programs... cheers luigi -----------------------------------+------------------------------------- Luigi RIZZO, luigi@iet.unipi.it . Dip. di Ing. dell'Informazione http://www.iet.unipi.it/~luigi/ . Universita` di Pisa TEL/FAX: +39-050-568.533/522 . via Diotisalvi 2, 56126 PISA (Italy) http://www.iet.unipi.it/~luigi/ngc99/ ==== First International Workshop on Networked Group Communication ==== -----------------------------------+------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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