From linux-video Tue Jun 05 14:07:51 2001 From: Eugene Kuznetsov Date: Tue, 05 Jun 2001 14:07:51 +0000 To: linux-video Subject: Re: [V4L] New capture core - testers/developers wanted! X-MARC-Message: https://marc.info/?l=linux-video&m=99175010920654 Hello Justin, Tuesday, June 05, 2001, 4:32:58 AM, you wrote: JS> Hi everybody, JS> After many comments/complaints about my existing capture engines, I JS> finally sat down and wrote a new one. After two evenings of furious JS> coding, I have a very alpha program just waiting for a few suckers to JS> test. There are a number of problems documented in KNOWN_BUGS (and JS> probably quite a number that aren't too!). JS> The capture core features perfect A-V synchronisation, irrespective of JS> frame drops/video loss, etc. It also has dynamic time warping of the JS> audio stream to ensure that EXACTLY the right amount of audio data is JS> written for the number of video frames (at least averaged over a couple JS> of frames). This removes the problem of synch drift over long JS> recordings (without any clicks/pops). JS> At the moment it only works for v4l2 and oss, and can produce RTjpeg JS> encoded QT files (which can be editted with bcast2000), or DivX encoded JS> AVI files (if your computer is fast enough!). The DivX files are good JS> for testing the "smooth" frame dropping (the core tries to drop frames JS> in an intelligent manner to keep the resulting video as smooth as JS> possible). I tried to build it, and now I am a little confused ... I'm using kernel 2.4.3 with applied v4l2 patch and bttv 0.8.16. First of all, the program wouldn't build without editing makefile - I had to remove -Werror flag. Now I managed to compile it, but it fails after the very first v4l2 ioctl(). I tried to investigate what happens. The program fills a few members of v4l2_format structure ( leaving most of them uninitialized ) and makes a call to ioctl(VIDIOC_S_FMT). Driver checks the uninitialized fields ( cfmt.type and cfmt.pix.pixelformat ), finds them unacceptable and returns -EINVAL... I must be doing something wrong. What drivers should I use to test the program? -- Best regards, Eugene mailto:divx@euro.ru or sparky@projectmayo.com [Team GADGET] [Team Two Divided By Zero] NetZero Platinum No Banner Ads and Unlimited Access Sign Up Today - Only $9.95 per month! http://www.netzero.net _______________________________________________ Video4linux-list mailing list Video4linux-list@redhat.com https://listman.redhat.com/mailman/listinfo/video4linux-list