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<p>On 2020-12-03 16:50, David Watkins wrote:</p>
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<div class="gmail_attr" dir="ltr">On Thu, 3 Dec 2020 at 16:31, David Watkins <<a href="mailto:watkinshome@gmail.com">watkinshome@gmail.com</a>> wrote:</div>
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<div class="gmail_attr" dir="ltr">On Thu, 3 Dec 2020 at 14:33, Stephen Worthington <<a href="mailto:stephen_agent@jsw.gen.nz">stephen_agent@jsw.gen.nz</a>> wrote:</div>
<blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">On Thu, 3 Dec 2020 12:27:31 +0000, you wrote:<br /> <br /> >><br /> >><br /> >> What are your HD recording filesizes, in GB/hour?<br /> ><br /> >In the UK I generally see 1.3GB to 2GB/hour<br /> ><br /> >SD is normally around 750MB/hour<br /> ><br /> >It can vary significantly though depending on the channel and programme.<br /> >Should be a reasonable indication of the compression.<br /> <br /> If that is H.265 it might be ok, but if it is H.264 then it is not<br /> what I would call HD. Here in New Zealand our DVB-T HD programmes<br /> (H.264) are over 3 Gibytes per hour. But when they first started,<br /> when there were fewer channels, they were 4.5-5.5 Gibytes per hour.<br /> And recently the only satellite service (Sky TV NZ) has converted all<br /> their transponders from DVB-S to DVB-S2 and a number of their channels<br /> are now around 4 Gibytes per hour.<br /><br /></blockquote>
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<div>That's interesting. What I said is typical of what I'm getting though here in the UK.</div>
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<div class="gmail_quote">I wonder if I should be getting 1080?</div>
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<div class="gmail_quote">My TV is 42" 1080. So not so big, and my old eyes are fairly happy with the HD quality I'm getting. The only thing I find poor is large black areas, which can be very blocky.</div>
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<div class="gmail_quote">I can feel a bit of research coming on.</div>
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<div class="gmail_quote">D<br />
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<div>From the BBC Website</div>
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<div>By my calculation 3.2Mbps = 1.44 GBytes/hour. So I'm not losing anything. That's what they're sending me.</div>
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<p>But this thread is about broadcast and not streaming. I'm getting about 2GBytes per hour from a Freeview HD tuner for BBC One. Your mileage will vary, especially on the commercial muxes where channel numbers seem to be more important than quality. Freeview uses stochastic compression to share variable compression rates between all the channels in real time. Your beautiful wildlife scenery panning shot might go lumpy if someone on the jewellery channel starts throwing glitter around.</p>
<p>CHeers,</p>
<p>Tim.</p>
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