[mythtv-users] Multiplexing vs multiple cards

Douglas Peale Douglas_Peale at comcast.net
Thu Nov 4 17:11:06 UTC 2010


On 11/04/2010 09:57 AM, Steven Adeff wrote:
> On Thu, Nov 4, 2010 at 12:50 PM, Douglas Peale
> <Douglas_Peale at comcast.net> wrote:
>> On 11/04/2010 05:32 AM, Greg Oliver wrote:
>>> I have found that real-time comm-flagging (up to 6 simultaneous) is a
>>> lot less intensive on the system than playing catch up.
>>
>> Do you know if the real-time commercial flagging happens to the stream before it gets written to the disk? If so, it would
>> explain the performance improvement, eliminating the read from the disk that offline commercial flagging must do.
> 
> I believe the slight delay imposed on the real-time commflagging means
> you are reading from the disc again, but if your CPU is capable of
> commflagging at faster than real-time your not reading from the disc
> all that often since the data just isn't there yet.
> 

That is unfortunate because my system is disk limited (only 1 disk in the system).

BTW I was unable to find the option for real-time comm-flag in the menus. The only thing I found was "Enable experimental
speedup of commercial detection". Is that it?


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