Cincinnati, OH - HDTV - Page 415

I haven't had a chance to cap/analyze the WKRC video streams during 24fps content to check, yet --- Is WKRC implementing a "film detection/Repeat Field Detection/etc. setting on the NetVX to implement TFF/RFF("Telecine") flags during 24fps content (like WLWT, The ThinkTV stations and WBDT(CW HD Dayton) do - on all their 480i and 1080i services) ... ???? ... If I recall correctly, the NetVX and Harmonic Encoders will do that (Some decoders have problems with that+720p, but AFAIK, that doesn't seem to be an issue with 480i/1080i ) .....

Update: Never Mind that question - Just checked it with some 24fps commercials during current basketball game --- They're not using the TFF/RFF flags currently/The dupes are coded pictures ....

It seems to me it(and the more "efficient" encoding) already (obviously) is being used for that .... (update) : And, it's not like there's a lot left over ... For example --- this afternoon/currently(during HD Basketball), I see The Null packet stream going as low as about 1.15Mb/s with 12.1 video as high as about 12.83Mb/s and 12.2 video going as high as about 4.5mb/s (don't forget there are also the audio streams, PSIP and TVGoS that "fill out" the remainder of the 19.39 Mb/s total payload) ....

Tsreader HTML output attached (w/o info in EIT's)-- This was capped during bandwidth demanding portion of HD basketball game, at a time when it looked like(with my eyes) that the HD could certianly have used more bits ...... Of course, in order for the HD Video to get many more bits during such times, CinCW would need to be using fewer bits, which doesn't bode well for the quality of both program services(even with Stat-muxing) for when you have bandwidth demanding content airing simultanously on Both of them ....

704x480 4x3 vs. 704 x 480 16x9 is just a change in pixel aspect ratio, the resolution and bandwidth requirements are the same ....

That would be nice, as it looks to me like there is certianly room for improvement there, but it seems unlikely to me from what we've seen from them so far (And in general, most everyone else as well) .....

Update: Oh, anyway - along those lines --- I haven't looked at it much, but The main improvement I've noticed so far is the lack of the flexicoder adaptive pre-filtering issue (which was especially noticable during/just after scene changes) .... Although there has been some improvement regarding the following ---- There still seems to be significant blocking or mosquito noise issues --- And also, it's hard to say given I've only used my eyes, and again I've looked at very little of it, but it looks to me like some sort of undesireable filtering (resulting perhaps in some loss of detail) *may* also be going on ...

 

WKRC.zip 1.88671875k . file

Going back a bit .... meant to comment on this earlier, but didn't have the time :


The FCC order(Adopted Dec 8, 2009/released Dec 10, 2009) changing the allotment to 22 was Published in Federal Register on Dec 21, 2009 (The "effective date" of the order) ..... It specifies in the order WCPO SHALL submit a CP app (minor change to licensed facility) within 30 Days of the effective Date of the order ...

It's possible they may have already submitted it, and it's just not "showing up" yet (A current search of CDBS doesn't find it yet) --- In any case, one would think it *should* show up soon ......

BTW, Regarding Other recent UHF to VHF changes in area -- WKYT's (Lexington - currently on 13) CP app for 36 Was filed 12/1 -- , WSYX(Columbus - Currently on 13) CP app for 48 was filed 12/28/2009, but not shown as "accepted for filing" by FCC until 1/6/2010 .... The FCC order changing the WSYX allotment was Adopted Dec 8/Released Dec 11, Published in Federal Register December 21 ....



One perhaps interesting thing about that is the only "indication" of the W22DE callsign I can find is on the Authorization for the CP, All other records available on FCC site are "old" records, with the old W66AQ (on 66) callsign and facilities specified ....

Usually, when the CP is applied for(which happened, and was granted in this case back in 2007 per an "interference agreement" with WKEF), the technical info (ERP, Antenna pattern/etc) shows up in CDBS (including TV query) immediately, and that info is also utilized for interference protection calculations by other stations/etc. for channel change petitions/CP apps/etc per OET bullitin #69 .... Even though they would be displaced, being a LP station -- nevertheless, the info *should* have been there for interference analysis purposes for WCPO's petition as well as the presumably upcoming CP app (especially since it's not just an "app", they are actually ON the air) ....

My best guess as to why that happened may involve that WKEF 22 (analog) was "using" channel 22 in Dayton at the time the CP for W22DE was granted, so perhaps CDBS had some sort of a "key field" issue/etc .....