Re: MPEG-2 Capture?
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From: Aleksandr M. <n6...@mi...> - 2001-02-06 20:58:06
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At 12:49 PM -0500 on 2/6/01, Dan Dennedy commanded the electrons to create a missive titled "Re: MPEG-2 Capture?": |From: "Aleksandr Milewski" <n6...@mi...> |> This is the right thing to do. I'll look at the source, but I have a |> suspicion that commenting out large pieces of dvgrap might be the way |> to go. | |There is a test mode of dvgrab and corresponding function that you should |look at for the case that is closest to yours. It will be a couple of weeks before I can get that machine built (too many commitments at work) but when I get that running I'll take a good look at dvgrab and both test and raw modes. I read the docs last night, and I rather got the impression that test mode would include the 1394 headers in the file. I guess I don't understand the difference between test mode and raw mode. |The IEC-61883-4 spec describes MPEG2-TS over 1394. Can you confirm that your |device conforms with this? The spec description says it is related to DVB, |in which case one should look strongly at the DVB API and source code at |http://www.linuxtv.org/. I'm fairly sure that they aren't that sophisticated, but at this point we're speculating. Probably the best thing for me to do is build up a machine with 2.4 and linux1394, and make a test mode file available to those who know more than I do. |What devices support this that might convince me to buy one--a digital TV? At the moment, there's nothing on the market. The first generation of D-VHS decks all had one form or another of this, although things were somewhat proprietary. Hughes and RCA DirecTV receivers would play with each other, and Panasonic did their own thing. I think the tape format was the same (14.1Mbps MPEG2-TS) but the 1394 implemenations were (deliberately?) incompatible. The Hughes/RCA devices were SD only, but the Panasonic PV-HD1000 DVHS VCR can record all 18 ATSC formats. The way these thing worked was that the bitstream would get sent down the 1394 to the VCR during record, and back up the 1394 to the MPEG2 decoder in the set top during playback. You could dub from tape to tape by connecting two machines over 1394. All of these got yanked off the market over the past six months, presumably under pressure from the MPAA. There's a new generation of D-VHS machines that were announced at CES this year, but with some form of copy protection to keep Hollywood happy. I want to be able to capture from a D-VHS deck to a file so I can edit the programs, and then burn to DVD-R for archiving. -Zandr -- --------------------------------------------------------------------- Aleksandr Milewski N6MOD n6...@mi... http://www.milewski.org/ |