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post #4081 of 4100 Old 07-10-2015, 08:57 PM
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Quote:
Originally Posted by Trip in VA View Post
It doesn't.

- Trip
No additional power costs for the transmitter?
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post #4082 of 4100 Old 07-11-2015, 08:19 AM
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Nope. If the bits aren't used, it's stuffed with "null packets" which essentially transmits zeroes in the empty spaces. Stations always transmits 19.393 Mbps whether it's all used or not.

- Trip

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post #4083 of 4100 Old 07-11-2015, 10:05 AM
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Quote:
Originally Posted by Trip in VA View Post
Nope. If the bits aren't used, it's stuffed with "null packets" which essentially transmits zeroes in the empty spaces. Stations always transmits 19.393 Mbps whether it's all used or not.

- Trip
Hmm, good to know! Since I have your ear, Trip, can you tell me the typical bitrate (how many Mbps) used for a 1080i or 720p OTA broadcast? I'm sure it ranges a bit (which is why a station with lots of sub channels will have a lower bitrate/worse PQ on the main HD channel), but I'm just wondering, rough estimate.

I've noticed that when watching the same show (Wayward Pines) via Hulu, with a 3.2 Mbps MPEG4 (H.264) 720p stream, it looks just as good as the MPEG2 720p broadcast from my local Fox 17 station -- both show crisp detail and no problems with blockiness in dimly lit areas or fast-moving scenes. (Maybe if I could take screenshots I'd notice a slight difference here and there but sitting a few feet from my 52" 1080p Samsung, I cannot, and I think I have a pretty good eye for HD PQ.) From what I've read, it sounds like H.264 is 2 to 3 times as efficient as MPEG2. But I would guess that Fox 17's main HD channel is broadcasting at at least 12 Mbps seeing as how they only have a single SD sub channel.
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post #4084 of 4100 Old 07-11-2015, 10:21 AM
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It's hard to say. These days, many stations use variable bitrate encoders that vary the number of bits based on how much is needed by the video. A high motion sporting or nature scene might need a large amount of bandwidth, while a talking head needs very little. All of that being said, my website's data (which isn't perfect, particularly because of the large number of stations on variable bitrate encoders) suggests the average 1080i video stream is 13.6 Mbps while the average 720p video stream is 12.1 Mbps, nationwide.

http://www.rabbitears.info/oddsanden...?request=avgbr

MPEG-4 is generally taken to need about 50% of the bandwidth of MPEG-2 for equivalent quality. So a 12 Mbps 720p feed would need about 6 Mbps, give or take, to be equal in quality.

- Trip
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post #4085 of 4100 Old 07-11-2015, 12:52 PM
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Quote:
Originally Posted by Trip in VA View Post
It's hard to say. These days, many stations use variable bitrate encoders that vary the number of bits based on how much is needed by the video. A high motion sporting or nature scene might need a large amount of bandwidth, while a talking head needs very little. All of that being said, my website's data (which isn't perfect, particularly because of the large number of stations on variable bitrate encoders) suggests the average 1080i video stream is 13.6 Mbps while the average 720p video stream is 12.1 Mbps, nationwide.

http://www.rabbitears.info/oddsanden...?request=avgbr

MPEG-4 is generally taken to need about 50% of the bandwidth of MPEG-2 for equivalent quality. So a 12 Mbps 720p feed would need about 6 Mbps, give or take, to be equal in quality.

- Trip
Are "null" packets sometimes used for translators? I ask because I was looking at an LP station the other day and under transmitter power it had this.
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post #4086 of 4100 Old 07-11-2015, 01:06 PM
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All stations transmit at least some null packets. I'm not sure I understand your question.

- Trip

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post #4087 of 4100 Old 07-12-2015, 09:28 AM
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It appears work continues on the audio problem at WRTN?

REV'N (6-2) has been off for a few days, and the audio for RETRO (6-3) was off this morning for a short time.
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post #4088 of 4100 Old 07-12-2015, 01:07 PM
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Hopefully REV'N is off for good and was pulled to make room for the imminent addition of Antenna TV.
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post #4089 of 4100 Old 07-16-2015, 08:48 AM
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Tuff TV is on 6.2 as well as 6.5 right now.
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post #4090 of 4100 Old 07-20-2015, 11:10 AM
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Updating retrotv's information above; Tuff TV remains on 6-2 & 6-5. The sound bleed from Tuff TV to retro TV, currently on 6-3, continues.
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post #4091 of 4100 Old 07-20-2015, 11:46 AM
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Anyone heard anything further about the addition of Antenna TV on 6-1? The end of July is creeping up. Maybe Rick is now waiting until Aug. to add it, along with sister channel This TV and The Works.
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post #4092 of 4100 Old 07-20-2015, 02:59 PM
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post #4093 of 4100 Old 07-23-2015, 09:51 AM
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For several days, both 6-2 (Tuff TV) & 6-5 (Tuff TV) have been off. I could not hear any audio bleed on retro TV (6-3).

Today the picture for Tuff TV on 6-5 is back, no audio. The audio bleed on retro TV (6-3) is still off.

No issues with 6-1 (Daystar); 6-3, (Public Service TV shows?); 6-4 (Classic TV shows); 6-6 (Classic Movies), or 6-7 (Infomercials).

August 1 is coming!!

Have a great rest of the week!
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post #4094 of 4100 Old 07-29-2015, 11:10 AM
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Just spoke with the programming guy at WTVF 5 and he confirmed that Laff will be carried on 5.3, replacing This TV, but that Laff will not launch there until September. (I believe he said Sept. 21.)

I didn't specifically ask if This TV would remain at 5.3 all the way up until Laff begins in September but I assume that's the case. Stations don't typically like to let a sub channel "go dark". So if This TV stays at 5.3 until Sept. 21, that means it won't be bowing on WRTN 6 at the start of Aug. as had been anticipated.

On the other hand, I had learned some time ago from WTVF 5 that their contract with This TV was only through July 31. Who knows, maybe This TV will switch over to 6 on Aug. 1 and WTVF will duplicate NewsChannel 5+ on both 5.2 and 5.3 until Laff launches (like WKRN 2 is doing with weather on 2.2 and 2.3 until they eventually land Me-TV or whatever on 2.3).

Given that Antenna TV and This TV are sister channels from the same company, we may see them both added to WRTN 6 at the same time. So maybe no Antenna TV until late September? Anyone heard any update from Rick Goetz on what's going on there?

This Sat. is Aug. 1, so we should have some inkling about how this will play out then.
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post #4095 of 4100 Old 07-30-2015, 06:53 AM
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I just checked the "Laff" schedule. Unfortunately, as an old fuddy duddy, I saw absolutely nothing of interest.

When news breaks...we fix it.
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post #4096 of 4100 Old 07-31-2015, 05:50 AM
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Interesting info from The TeeVee Guyd.

https://www.facebook.com/TheTeeVeeGuyd?fref=nf (July 29 @ 9:06 PM; extend the listing for all the info.)

Last edited by tomintn; 07-31-2015 at 05:54 AM.
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post #4097 of 4100 Old 07-31-2015, 06:00 AM
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What's going on on channels 2-2 & 2-3 right now? Are they testing a camera, aimed towards the Nissan Stadium? Well, both just changed back to weather.
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post #4098 of 4100 Old Yesterday, 06:24 AM
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Maybe this is part of the hold-up for MeTv?
http://www.broadcastingcable.com/new...ns-deal/142937
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post #4099 of 4100 Old Yesterday, 09:03 AM
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Quote:
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Maybe this is part of the hold-up for MeTv?
http://www.broadcastingcable.com/new...ns-deal/142937
Thanks for the info!
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post #4100 of 4100 Old Today, 05:51 AM
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I am shocked this morning to be receiving WJDE (varied from extreme pixelation to clear signal). The TV did add all six subs. This is the first time I have ever received the station's signal since my external antenna RF coax failed; and then the signal was extreme pixelation & very little audio. Prior to today, the existing setup was always "Retrieving Data," then "No Signal." I am using an RCA 1700 antenna , with an RCA amplifier. This is equivalent to the RCA 1750.

On Decades, the Ricardo's, the Mertz, & the Williams (Danny Thomas) are in court. Gayle Gordon is the judge.

WJDE is gone.

Last edited by tomintn; Today at 06:07 AM. Reason: Update info.
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