CPU for recording 12 channels + extra (1 Viewer)

FMGenie

Portal Member
February 2, 2014
7
1
39
Finland Finland
Hi!

Posted same kind of message to other area but this concerns just CPU.

I need to
  1. watch one and record 12 SD channels simultaneously from four muxes; or
  2. record 12 SD channels and watch x.264 encoded movie; or
  3. encode SD recordings to NAS.
What kind of CPU is adequate for this job?

Thank you! :D
 

mm1352000

Development Group
  • Team MediaPortal
  • September 1, 2008
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    New Zealand New Zealand
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    Hello

    If the channels are free (not encrypted) then the CPU doesn't have to be high end to record 12 channels simultaneously. You should be more concerned about your timeshift/record HDD.
    If you have a GPU that supports DXVA and the movie is encoded to support DXVA then the CPU doesn't have to be high end.
    If you are re-encoding (ie. not just copying/moving) the recordings before moving them to the NAS then the faster the CPU, the faster the re-encode process goes.

    mm
     

    Teeo

    Portal Member
    September 28, 2009
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    Helsingborg
    Sweden Sweden
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    Hello!

    My experience is that i have eight DVB-S2 tuners and done HD channels recordning on all of them (not sure if the channels where all on different transponders). On my TV-server I have a quad core(+ hyperthreading) xeon e3-1230 running @ 3.3GHz. I get about 40% of cpu usage.
    If you want to do some transcoding to, then I would think a faster cpu will be required (unless a gpu can unload the cpu then maby cpu will be adequate)
     

    regeszter

    Retired Team Member
  • Premium Supporter
  • October 29, 2005
    5,335
    4,954
    Hungary Hungary
    Intel 1.6 GHz single core (but HT) atom cpu, 2 GB ram.

    2 USB DVB-T tuners.
    3 HD channels (not encrypted)
    4 SD channels (not encrypted)

    test.png
     

    FMGenie

    Portal Member
    February 2, 2014
    7
    1
    39
    Finland Finland
    My experience is that i have eight DVB-S2 tuners and done HD channels recordning on all of them (not sure if the channels where all on different transponders). On my TV-server I have a quad core(+ hyperthreading) xeon e3-1230 running @ 3.3GHz. I get about 40% of cpu usage.
    Intel 1.6 GHz single core (but HT) atom cpu, 2 GB ram.

    2 USB DVB-T tuners.
    3 HD channels (not encrypted)
    4 SD channels (not encrypted)

    View attachment 144872
    :whistle:(y)

    I really don't need a big cpu! :)

    If I encode a tv show, can I automatically name it for example CSI_3-2-14.mp4 or something like that?[DOUBLEPOST=1391454778][/DOUBLEPOST]
    Hello

    If the channels are free (not encrypted) then the CPU doesn't have to be high end to record 12 channels simultaneously. You should be more concerned about your timeshift/record HDD.
    If you have a GPU that supports DXVA and the movie is encoded to support DXVA then the CPU doesn't have to be high end.
    If you are re-encoding (ie. not just copying/moving) the recordings before moving them to the NAS then the faster the CPU, the faster the re-encode process goes.

    mm
    Could you give me some examples how long with certain CPU will take TV show re-encoding to 1/3 of size (1 hour show 1.5 GB to 1 hour 500 MB, around 1200 kbps bitrate)?
     
    Last edited:

    mm1352000

    Development Group
  • Team MediaPortal
  • September 1, 2008
    21,571
    8,219
    New Zealand New Zealand
    Country flag
    Could you give me some examples how long with certain CPU will take TV show re-encoding to 1/3 of size (1 hour show 1.5 GB to 1 hour 500 MB, around 1200 kbps bitrate)?
    Sorry, I don't re-encode my recordings... but I'm sure somebody else will be able to comment. :)
     

    FMGenie

    Portal Member
    February 2, 2014
    7
    1
    39
    Finland Finland
    How much CPU power do I need to stream TS or 720p mp4 to iPad while watching TS or 720p mp4 with MediaPortal. I'd use iPimp or MPExtended. Anyone doing this? Please help.[DOUBLEPOST=1391715396][/DOUBLEPOST]Maybe CPU is irrelevant as there is Airvideo.. Right? :whistle:
     
    Last edited:

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