Posted by Jukka Aho on 10/05/37 11:44

Dave wrote:

>> DVD format includes MPEG-1 on a DVDR. Any recording over 4 hours per
>> disc is MPEG-1.

> Are you sure?
>
> I understood that the DVD specification meant that it has to be
> Mpeg2, and the thing that allows yoiu to get more on the disc is the
> bit rate rather than the frame size (Mpeg1 has a 4x smaller - half in
> each direction - framesize than Mpeg2).
>
> I stand to be corrected if I am wrong.

The DVD standard allows both MPEG-1 and MPEG-2 video. The MPEG-1
capability is limited to the maximum bitrate of 1.856 Mbps and to the
same resolutions as used on Video CDs. (352×288 for 625/50 video,
352×240 for 525/60 video.)

Unlike the previous poster seems to imply, I am not aware that anything
in the DVD standard would _force_ you to use MPEG-1 if the contents
exceed a certain runtime.

--
znark

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