[mythtv-users] MPEG-2 files size
Craig Longman
craigl at begeek.com
Thu Jul 3 18:15:52 EDT 2003
Chris Petersen wrote:
>>A PVR 250 at 640x480 extremely high, non-variable bit rate... I'd factor
>>about 3.9GB/hour. Given how encoding works of course YMMV. You can also
>>adjust the PVR 250 to bring these values down (decrease resolution, bit
>>rate, etc).
>>
>[snip]
>
>Either way, ###kbps is going to be about the same size (allowing for
>extra header info, etc) no matter which format you're talking about.
>
i do think that mpeg-4 produces much better output that the pvr250 at
the same bitrate. if you're trying to figure out diskspace, i really
would suggest that you factor for at least 3GB/hr, thats at about 6Mbps,
which works well for me. some people on this list use it lower and like
it, others use it higher and like it (3.9GB/hr is about the standard
8Mbps). so, you do the math for how much space you need. it depends
where you're going to use it also, on a 17" computer monitor lower will
work fine, but on a 52" tv, you might need to bump up the bitrate.
get a bigger hard drive. i'm trying to manage right now with a 30 GB and
its really not enough, as soon as i can spare a moment, i'm going to get
at least an 80GB for recordings.
cheers,
CraigL->Thx();
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