On 19-10-18 08:59, A. Dumas wrote:
> Jan Panteltje  wrote:
>>> Adrian Caspersz  wrote:
>>>> https://www.raspberrypi.org/blog/raspberry-pi-tv-hat/
>>
>> Not bad, about 20 Euro...
>> Does it allow you to use an other hat on top of it?
>> For using GPIO I mean.
>
> I would be more worried about decoding tv/radio signals. I think it has no
> smartcard/encryption support and you can only see NED1, 2, 3 and some
> regional stations.

Yeah definitely no decryption. Also HEVC HD is a problem. Quoting some
reactions from the blog page below. The first two are especially
troublesome, as they seem to be from official developers and indicate
that they didn't aim this product at anything but the UK, really. This
leaves the function of the Pi+HAT as a LAN streamer, with
decoding/decrypting left to the receiving device. We (outside the UK)
would almost certainly be better off with any DVB-T2 usb-stick.

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We can decode 1080p30 H265 in software (we’ve spent a lot of time
accelerating this), the only question is whether tvheadend suitably
provides the right formatting information for H265.

Since we’ve been unable to test this in the UK (and we’ve not had
feedback from our beta testers to the contrary), I can’t confirm it’ll
work, but I’ve no reason to think it wouldn’t.
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It depends on the format. I believe 1080p50, 720p50 and 540p50 are legal
formats for HEVC TV broadcasts in Europe.

The latter two are fine. The first is beyond what we claim to support,
but we have had reports of being able to play broadcast German 1080p50
HEVC from a TV-HAT with some overclocking.
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UK Freeview SD (MPEG2) and Freeview HD (H264) broadcast on DVB-T and
DVB-T2 work pretty effectively on all flavours of Raspberry Pi (from the
Zero to the 3B+) in my experience using USB or networked tuners, and all
flavours of Pi handle the MPEG2 and H264 576i and 1080i broadcasts in
the UK fine (even with 2x deinterlace) The MPEG2 licence was needed at
one point for all Pis, and may still be for the single core models.

The WiFI on the Zero W may be a bit marginal for streaming DVB-T2 H264
1080i stuff to other backends.

The UK has no encrypted DVB-T/T2 broadcasts, so decryption isn’t an
issue here in the UK – but it will be for those in other European
countries where often only the Public Service Broadcasters are
Free-to-Air, with many commercial services pay-TV and encrypted. The
discussion of ways of decoding these services outside of using official
receivers is always very tricky – irrespective of whether you have a
valid subscription card.
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