[mythtv-users] Comcast mpeg4 switching to 720p

[Jon Heizer]

On Wed, Nov 2, 2016 at 3:22 PM, Jon Heizer <jheizer at gmail.com> wrote:

>
>
> On Wed, Nov 2, 2016 at 3:15 PM, John Adams <mythtv at onevista.com> wrote:
>
>> On Wed, 2 Nov 2016 16:02:16 -0400
>> Peter Bennett <cats22 at comcast.net> wrote:
>>
>> > Now that Comcast have started using x264 for some channels I have
>> > noticed that the 1080i channels are switching to 720p when they switch
>> > to x264. This seems to be official policy - see below.
>> >
>> > http://forums.xfinity.com/t5/Non-X1-Service/1080i-channels-a
>> re-being-changed-to-720p60-channels/td-p/2778182
>> >
>> > They seem to view this as an improvement. I wonder why those channels
>> > used 1080i in the first place if 720p is superior. I also wonder if
>> > they have approval from their cable channel providers to do this.
>> >
>> > Up to now it is only cable channels that have switched. The broadcast
>> > channels are still mpeg2 1080i.
>> >
>> > Peter
>> >
>> 1080i30  is only 540p30
>> 720p60 is much superior with respect to motion
>>
>> johna
>>
>>
>>
>>
>
> I've had h264 from comcast for a while.  It looks like they have also
> changed channels that were previously h264 1080i to 720p.
>
> Example:
>
> Velocity Sept 28th
>   Duration: 00:31:59.85, start: 47977.132767, bitrate: 3727 kb/s
>     Stream #0:0[0x125a]: Video: h264 (High), yuv420p(tv, bt709), 1920x1080
> [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
>     Stream #0:1[0x125b](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
> 5.1(side), fltp, 384 kb/s
>
> Oct 26th
> Duration: 00:32:00.35, start: 82055.426378, bitrate: 3713 kb/s
>     Stream #0:0[0x125a]: Video: h264 (High), yuv420p, 1280x720 [SAR 1:1
> DAR 16:9], Closed Captions, 59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
>     Stream #0:1[0x125b](eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 384
> kb/s
>
>
> Same show for both.
>
> In reality which is better, I really have no clue.  1080p sure would have
> been nice though.
>
> Jon
>
>

After I hit send thought.  Those of us getting all progressive content
won't have to care about having machines with powerful deinterlacer
abilities anymore.  Makes NUCs and RPis seem much better.

Jon
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