Posted by GMAN on 11/24/06 17:57

In article <5n%8h.6762$Uz.3745@trnddc05>, "BB" <BB@NOSPAM.COM> wrote:
>
>"GMAN" <glenzabr@nospam.xmission.com> wrote in message
>news:ek1sd6$kld$1@news.xmission.com...
>> In article <456425da.250854234@news-server.houston.rr.com>, spam@uce.gov
>wrote:
>> >On Tue, 21 Nov 2006 19:26:30 GMT, glenzabr@nospam.xmission.com (GMAN)
>> >wrote:
>> >
>> >>You two do realize that most of these standalone DVD recorders drop down
>into
>> >>MPEG1 format when you get into the 3 + hour modes?
>> >
>> >I suspect you have discovered what is going on. The newer DVDRs do not
>> >fall into MPEG1 - they have the capability to remain in MPEG2 which is
>> >the superior method of encoding.
>> >
>> >I would like to test that on my Polaroid and Insignia units. Can you
>> >recommend a utility that will unambiguously determine the encoding
>> >standard. I use GSpot for DixX/XviD but it does not work for MPEG1 or
>> >MPEG2.
>> >
>> Just play the video file in any pc based dvd playback software such as
>> PowerDVD and show info. I bet that most all of the recorders out there do
>drop
>> to mpeg 1 format for 4 hour plus. If not , then at the very least its
>dropping
>> the resolution from 720x480 to 320x240 and dropping the bitrate down very
>low
>> to near VCD quality.
>
>The files should be MPEG2 even for longer play/record times since the DVD
>Standard is based on that. It may drop the bit rate very low but I doubt
>that it drops the resolution since that is part of the MPEG2 standard which
>is part of the DVD standard. . .
>
>BB
>
>
>
352x480 "IS" within the DVD specs, so is mpeg1.At the very least most
recorders will drop the bitrate to near VCD standards and the resolution down
to 352x480 or 352x240 even if it retains it as mpeg2.

Below is the allowable formats under the DVD standard for movies

http://www.dvddemystified.com/dvdfaq.html#3.4

MPEG-2, 525/60 (NTSC): 720x480, 704x480, 352x480, 352x240
MPEG-2, 625/50 (PAL): 720x576, 704x576, 352x576, 352x288
MPEG-1, 525/60 (NTSC): 352x240
MPEG-1, 625/50 (PAL): 352x288

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