[mythtv-users] What's your recording file size?

Kichigai Mentat kichigai at comcast.net
Thu Dec 8 12:40:37 EST 2005

Hash: SHA1

On Dec 8, 2005, at 11.32, MythTV wrote:

>>> As mentioned it is normal. You can adjust the data rate in the
>>> recording profiles. If you are recording analog from the air,  
>>> then you
>>> might reduce the horizontal resolution from 720 pixels to 400 and
>>> reduce the datarate accordingly.
>>> And you can transcode to MPEG4 to reduce the data rate even further.
>>> But in that case you should better have a high rate in the
>>> MPEG2 to achieve a better MPEG4 result.
>> Yeah, but I'm pretty sure the PVR-500 outputs MPEG-2, not MPEG-4,  
>> so this
> kind of defeats the purpose of owning the PVR-500 (assuming
>> he purchased it with the MPEG-2 output in mind). Wouldn't it  
>> actually put
> *more* stress on the system to transcode the output from a
>> PVR-500 card to MPEG-4 since the system has to decode the MPEG-2  
>> stream in
> addition to encoding the MPEG-4 stream?
> The encode to MPEG-2 happens on the card in real-time with no CPU  
> impact.
> The encoding from MPEG-2 to MPEG-4 happens non-real-time (like  
> commercial
> flagging) after the recording so it is CPU intensive, but can be  
> run "nice"
> so it doesn't impact other processes.
Well, I was thinking that they meant instead of capturing MPEG-2, we  
capture MPEG-4 instead, not capturing in MPEG-2, then converting to  
MPEG-4 later.
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