[mythtv-users] small portable DVR

Greg Oliver oliver.greg at gmail.com
Sun Jan 13 17:02:21 UTC 2019

On Sun, Jan 13, 2019 at 9:51 AM James Abernathy <jfabernathy at gmail.com>

> On Jan 13, 2019, at 11:42 AM, George Poulson <george.poulson at gmail.com>
> wrote:
> On Sun, 13 Jan 2019 at 16:18, Jay Harbeston (ISeePeople) <
> jharbestonus at gmail.com> wrote:
>> Experimentation would be a good validation of the above using the small
>> 32gb sd card with and without the 2TB usb drive.
> If you're adding self-powered USB disks to an RPi you need to pay a lot of
> attention to your power supply :-)
> My external USB Hard Drive has it’s own power supply so that is not a
> problem.
> Until I build mythtv backend on the RP3 I won’t know it’s capability.  I
> do know that with tvheadend I can record 3 HDTV programs at once without
> issues.  Just don’t know about mythtv-backend.
> Jim A

I think everything would be fine since ATSC is 26Mbits max (15 -> 21 usual)
for up to four recordings.  If compressed with 264, way smaller...  I have
never tried commflagging on arm though, so unsure the CPU optimizations
that are granted on x86 with all of it's extras.  I would definitely start
with and add recordings one by one and watch the CPU, but it should have no
issue just raw recording I would imagine.
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