If you have access to Windows, you can use some other devices, such as an ADSTech Instant DVD 2.0 Converter USBAV-702 or an ADSTech DVD Xpress DX2 USB 2.0 Video Capture Box.
My dad and I have both used the USBAV-702, and it seems to work pretty well. But it is USB to MS Windows, don't think they have Linux support. > -----Original Message----- > From: [email protected] [mailto:ivtv-users- > [email protected]] On Behalf Of asbesto molesto > Sent: Tuesday, August 23, 2011 2:23 PM > To: User discussion about IVTV > Subject: Re: [ivtv-users] A problem with Debian, WinTV PVR-350 and > IVTV: .avi file "jumps" loosing frames... > > ... and TBC are expensive :( So, I can't encode those videos :( > > Thank you for the answer! > > Does someone have any idea to solve this? :) > > > On 8/23/11, Roger Dahl <[email protected]> wrote: > > On 2011-08-23 08:56, asbesto molesto wrote: > >>> I probably won''t be able to help you, but when you try to capture > the > >>> same section of tape multiple times, are the same frames lost each > time > >>> and does it freeze in the same place each time? > >> It seem to freeze almost in the same place, but sometimes the result > >> is better, sometime not :( > >> > >>> Do the frames that you are able to capture before and after the > problem > >>> areas look ok? Do they have any kind of horizontal sync problems at > the > >>> top, move vertically or have interlacing issues? Do the colors and > >>> brightness look ok? > >> Colors and pictures seem OK but when I play the stream directly > >> (mplayer /dev/video0) i notice some weird lines at the bottom of the > >> image; I made a screenshot, it's here: > >> > >> http://zaverio.com/~asbesto/capture1.jpg > >> > >> (p.s. that image was just me kidding many years ago :D > hahahahahahah!!!) > >> > >> What are those lines and what they mean? > >> > >> ps everything here is PAL > > > > Old CRT TVs used magnetic fields to guide an electron beam across the > > screen. At the end of each field, they needed time for resetting the > > magnetic fields back to the beginning, upper left, screen position. > That > > period is called the vblank. Anything in the video signal that was > > output to the TV in this period would be invisible. In addition, they > > used a technique called overscan to hide issues with their power > > supplies, further hiding signals output to the TV while the electron > > beam was in the overscan areas. VCRs often (always?) output junk > during > > these times, probably related to the way the video heads scan the > tape. > > > > I have two cards, a PVR 250 and an HVR 1600. In my experience, both > of > > these cards are easily confused by junk in the video signals during > the > > vblank and overscan. It's just bad engineering because LCD TVs have > no > > trouble at all with the signals. Issues I'm seeing are poor hsync at > the > > top of the screen, misinterpreted odd/even field signals and poor > colors. > > > > My guess is that the tapes you're having trouble with were recorded > in > > some way that is causing the VCR to output junk during the vblank > and/or > > overscan periods that cause the card to lose track of the vsync > signal > > in the video. > > > > I think that a TBC, Time Base Corrector, would fix your issues. It > sits > > between your VCR and your card and cleans up the video signal. Just > for > > fun, you could try re-recording your tape onto another tape. That > could > > fix up the problems, at the cost of worse quality. If you have a DV > > camera, you could try recording onto the DV camera and dump the > digital > > data out via FireWire. Another option is to just send the tapes off > to a > > company that has professional equipment to do transfers to digital, > > though I would not recommend that if there are any beheadings on your > > tapes :) > > > > Roger > > > > > > _______________________________________________ > > ivtv-users mailing list > > [email protected] > > http://ivtvdriver.org/mailman/listinfo/ivtv-users > > > > > -- > 73 de IW9HGS - Gabriele "Asbesto Molesto" Zaverio > Museo dell'Informatica funzionante - Freaknet Computer Museum > http://museum.freaknet.org || http://freaknet.org/asbesto > GPG Fingerprint: 8935 5586 7F2D 9C5E 51B6 BBC5 EA15 9A4E 613D 44D7 > > _______________________________________________ > ivtv-users mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-users _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
