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Comment PRECISELY. (Score 5, Informative) 288

I'm an audio mixer for several of the national and regional networks. I deal almost exclusively in live sports, and I can tell you we are monitored to a ridiculous degree. We have averaging meters in our trucks (measured in LKFS), and the TOC monitors the show AND commercials (in DB on a 3s average). The TOC logs the averages with timecode and video thumbnails (for reference) and saves them, as they are the only defense they have against CALM complaints. The TOC is quick to notify us during the show if we're too loud or too quiet and the averaging is out of compliance.

The problem is, no one at home is smart enough to know the difference between a national spot, a local spot, and a spot that your cable provider inserts. So the complaint becomes "Fox Sports played a loud commercial!!1!!!1!!!one!!!" when the culprit is actually the Comcast head-end in Gary, Indiana.

Between the meters, the logging, and the constant monitoring, broadcast is jumping through a lot of hoops to be CALM compliant. But the networks don't have end-to-end control of their signal, and the end user is at the mercy of their local cable headend. Almost all of the problems you experience happen there. I can't tell you how many times we find a surround downmix where the announcers are almost inaudible, because a cable operator (and sometimes even a satellite provider) is doing an improper downmix, and the 4.1 channels are blowing out the center on the stereo feed. The networks try to QC as much as they can - most of the network offices have receivers for every cable and satellite (and FiOS, AT&T, etc) service they can get their hands on, and constantly monitor as many of them as they can - trying to find and fix the problems proactively rather than wait for the vague and usually inaccurate complaints to roll in from the FCC.

Comment Re:Makes sense for film, not for broadcast (Score 1) 559

A little OT, but: They'd be useful for allowing the producers to zoom way in on replays without having to lose resolution downstream. You'd only need the high bandwidth between the camera and the production booth/truck. Or do they already do this and that's what you're talking about?

That's what the existing 4K X-MO cameras are doing - recording everything at high framerate and then zooming in. At Olympics, they would mount one over the pool, and then zoom in to whatever lanes were of interest, in full HD resolution, still in super slow-mo. For football, they have the camera shoot wide as an "All-22", and then they can zoom into anything in the play that was of interest. It's a great idea, it's like having an iso of everyone all the time. The zooming software was clunky, but that gets polished over time.

Comment Makes sense for film, not for broadcast (Score 1) 559

4K is a perfect medium for film. Film is already large format. Every aspect of production ground-up is based around large format, and since it's not live or real-time, you can take more time to ensure quality compression. All you need is a bluray spec and an HDMI/Component spec, and you're good to go.

Broadcast is an uphill battle, because there are bottlenecks at every point along the transmission line. 4K cameras need SMPTE fiber, and most facilities are still only wired for copper triax. The switcher upgrade isn't a huge technical problem, but digital replay is - since the bandwidth is going up orders of magnitude(1). The UHD (4K) SDI video transport spec isn't even finalized yet, but it's looking to be between 6-12Gb/s, 4-8x current HD bandwidth. Most fiber transmission lines are still only 270M/s, not even enough to fit a full HD signal at 1.5Gb/s (and most cheap networks only use 40-80Mb/s on their backhauls for cost reasons)... and you're basically ruling out satellite, since pushing that much data saturates a good portion of the bird AND leaves you even more susceptible to issues from bad weather. Then once you get it to your cable provider, most HD channels they push out are between 3-12Mb/s, meaning a 4K channel - even if it takes up the space of 4 or 5 HD channels - will have the life squeezed out of it by the time it reaches the end-user. And considering broadcasters still can't even squeeze 1080p out of OTA, there's little chance you'll see a major network adopt it.

My guess is that film will be the deciding factor as to if 4K lives or dies as a spec. If enough people see the quality improvement (read: if enough people buy new 65"+ TVs or projectors) then broadcast will make a concerted effort to fill the content void. If everyone shrugs off 4K because they're watching it on their cheap 46" 720p flatscreens, it will dissolve just as quickly as 3D. But 4K has one major advantage over 3D... the end-user isn't required to wear those stupid polarizing glasses. That in itself may give the format life where 3D failed miserably.

(1) There are some highly specialized 4K X-MO cameras out there (SNF/MNF have experimented with it, there was also a few working rigs at the Olympics) - but the rigs required to run them are pretty insane... it requires bonding 8-16 fibers to transfer the data, and trays of hard drives to store only 20-30 seconds of replay data at 240fps. They're neat "toys", just not very practical.

Comment Re:Works for me (Score 1) 374

Agreed. I own a 2008 car, which was re-stickered with the new EPA estimates before it was sold to me. The EPA estimate was 35mpg. In a combination of 60/40 freeway to city, I get a dashboard estimated 35mpg, and an actual number damn close to 35mpg (34.5 the last time I bothered to do the math). I've measured that freeway driving alone (65-75mph) gets me around 36.5mpg.

But realize the number changes significantly if you have your heat or A/C on. Usually colder temps and cranking the heat averages about 31.5mpg, and if I use my remote start on cold mornings all of that fast idling gets me closer to 29mpg at the end of a tank.

So most likely the problem is that people aren't comparing apples to apples. Montana in the winter or Texas in the summer will get you worse mpg than Tennessee in the spring. And that's BEFORE you take driving habits, acceleration patterns, and fuel type (ethanol blends lessen your MPG) into account.

Electronic Frontier Foundation

DOJ Often Used Cell Tower Impersonating Devices Without Explicit Warrants 146

Via the EFF comes news that, during a case involving the use of a Stingray device, the DOJ revealed that it was standard practice to use the devices without explicitly requesting permission in warrants. "When Rigmaiden filed a motion to suppress the Stingray evidence as a warrantless search in violation of the Fourth Amendment, the government responded that this order was a search warrant that authorized the government to use the Stingray. Together with the ACLU of Northern California and the ACLU, we filed an amicus brief in support of Rigmaiden, noting that this 'order' wasn't a search warrant because it was directed towards Verizon, made no mention of an IMSI catcher or Stingray and didn't authorize the government — rather than Verizon — to do anything. Plus to the extent it captured loads of information from other people not suspected of criminal activity it was a 'general warrant,' the precise evil the Fourth Amendment was designed to prevent. ... The emails make clear that U.S. Attorneys in the Northern California were using Stingrays but not informing magistrates of what exactly they were doing. And once the judges got wind of what was actually going on, they were none too pleased:"

Comment Re:Uh... which carrier? (Score 3, Informative) 245

You could always install a passive repeater - two antennas and a wire connecting them. They're not illegal, and they pass signal out of faraday cages effectively. Make the outside antenna a directional one and point it in the general direction of your nearest tower, and you shouldn't have any issues.

Comment Completely agree with this... (Score 5, Interesting) 245

...and I'll give you a perfect example of what they're trying to fight. I work in a stadium, in an area covered by 15-20 different "cell towers" (real towers, DAS, COWs, etc). The TV production crew works in one or more 53' aluminum expando trailers. Depending on how they're grounded, a lot of them make pretty impressive Faraday Cages - meaning cell phone and radio services are terrible inside them. Some of the TV truck engineers have installed active cell repeaters to help combat this, but of course forget if they have them turned on or not.

A TV truck came to town during an NFL game, they happened to be a truck whose engineers I'm close friends with and I happen to be aware that they run a repeater. During the game I hear reports of cell network issues. I'm walking through a service area only to find a guy with a spectrum analyzer waiving a directional antenna around the halls. I ask him what he's doing, and he says that six cell towers have been completely shut down due to some interference and it's making cell phone communication nearly impossible. (There is a baseball park next door. This can easily lead to tragedy when you have 100,000+ cell phones on the same street corner and no way to call out due to interference and capacity bottlenecks.)

I asked the engineer if he knew when the interference started, he said about 8am Saturday. He said it went away for a while, but then started up again at about 6am on game day. This is the exact schedule the TV trucks were powered up. I tell him to hang on, go to the truck engineers, and ask them if their repeater is on. I tell them to pull it, walk back in to the engineer, and ask how the towers are doing. He says everything seems to be fine now, and asks me what the issue was. I tell him it's taken care of, and walk away.

One cell repeater, left on accidentally in a densely populated area, effectively shut down communications at two major sporting events. They seem like a great idea, but they amplify so much noise at such a high power that they blow regular cell users who can't reach the repeater out of the water. I've seen it happen, and I'm glad the FCC is doing something about it.

Comment Not that simple (Score 2) 144

The math is way more complicated than that. No 100mph pitch is ever 100mph when the ball hits the glove. The initial velocity is 100mph, but due to wind resistance and other forces it can slow 12mph easily before it reaches the mound, 60ft after its initial release. This is why before MLB's Pitchtrax system different radar guns always gave different readings - they would pick up the ball at different points on its journey and thus at different speeds (leaving out the variable of calibration). You can actually get some really amazing raw pitch data using MLB's "Gameday" webpage during games. It will show you release velocity, velocity at contact, and a lot of other cool pieces of info (inches of break, etc).

10k FPS is impractical from every standpoint... data storage, image quality, lighting, and most importantly - playback. It would take 166 seconds at 59.97fps to play back a single second of video. We're lucky if we get 25 seconds between pitches to show a replay, not including the time to cue the clip up, the replay wipe in and out, etc. It might be cool to look at and analyze at some point down the road, or for the "wow" factor for the camera company and the mod company, but for a broadcast it seems pointless. Not that it's the first piece of pointless technology I've ever seen forced on us......

However, I do work baseball, do live in Detroit, and will be working the World Series games here (3, 4, 5). I'm going to seek out some additional info directly from the guys who run it this weekend.

Comment Misleading (Score 4, Informative) 144

They may use a camera that can run up to 5,000fps, but that's not the frame rate that was being shot.

There is no reasonable way to shoot high frame rates at night in the lighting conditions that exist in ballparks. Remember that stadium lights only actually project light 60 times per second, and not all of them fire at the exact same time (different power phases, feeds from different transformers and substations, etc). So while in sunlight you can shoot at 5,000fps (though no one does because it's impractical with the limited amount of time you have between pitches to show a replay), in large-scale HID (et al) lighting environments you can't shoot much more than 600-1000fps and still achieve a reasonable image quality. (Note that a referenced article in TFA says they shot at 3,000fps, but I still have major doubts that the captured clips or even the original clip which aired on television was actually shot at 3k FPS.)

And it's not just the frequency of the light, it's the amount. Zoom lenses lower the light that hits camera CCDs SIGNIFICANTLY. We experiment with high-speed cameras at long distances (center field pitch follow) quite regularly, and the result is incredibly underwhelming in anything other than direct sunlight. Though I will say, watching the movement and flight pattern of the pitch at high framerate in daylight is pretty spectacular.

Here (pdf) is an interesting whitepaper written by Grass Valley about the development of their super slow motion cameras, and the difficulties involved (flicker control, data rate, SNR, etc). The interesting reading begins on page 2. Note that this is NOT the camera used in the clips, the camera referenced is only doing 180fps - but you can extrapolate the complications presented in shooting 3000fps in HID lighting. (Side note: The referenced camera is the industry standard for smooth slow motion replay at 180fps. Ever notice that really smooth low-endzone NFL replay angle, or that definitive mid-1st MLB replay angle of the throw to first beating the runner? That's this camera.)

And in case you were wondering, the actual camera they used is here, though it was modified by a third party company to run at a higher frame rate.

Comment Numbers seem VERY wrong (Score 4, Interesting) 180

HDSDI uncompressed video is 1.5Gb/s. That is the standard for moving uncompressed video around inside a TV truck, whether 720p or 1080i. It rises to 3Gb/s if you're doing multiple phases of video (3D video, super slo-mo, etc). Within that 1.5Gb/s is still more than enough headroom to embed multiple datastreams and channels of audio (8 stereo pairs is the norm, some streams do up to 16). So I fail to see why 100Gb/s is necessary to transmit uncompressed video.

It's also a chicken-and-egg scenario. I'm a broadcast engineer and audio specialist. I had Ma Bell contact me about 7 years ago asking about how important uncompressed video transmission was, as they were trying to gauge a timeframe for a network rebuild to allow for uncompressed video transmission. My answer hasn't changed much in 7 years, because although moving uncompressed video from site to (in the case of Fox) Houston and then back to your local affiliate would be nice, it's completely unnecessary because by the time it reaches your house your local cable or satellite operator has compressed your 1.5Gb/s signal down to between 4Mb/s and 10Mb/s typically, making the quality gains negligible.

It will solve one problem, which is image degradation due to multiple passes of compression. Think about it... the 1.5Gb/s leaves our TV truck and gets ASI compressed into 270Mb/s (best case scenario, satellite transmission is significantly lower bandwidth, and most networks don't use an entire 270M circuit, they use less). It then arrives at the network hub, where it gets decompressed. If it's live it then goes through several switchers and graphics boxes, then gets re-compressed to ASI and sent either to another hub or to your local affiliate. (If not live, it gets put into a server which re-compresses the video even harder before playout.) Your local affiliate then decompresses it, it passes through more switchers and graphics boxes, then it gets either broadcast using 8VSB, or it gets re-compressed and passed on to your cable or satellite provider, who then un-compresses it, processes it into MPEG or some other flavor, and re-compresses it into its final 3-12Mb/s data stream for your receiver to decompress one final time.

This would eliminate several compression steps, and mean a better final image quality because you're not recompressing compression artifacts over and over and over again. A real 1.5Gb/s video frame looks like staring out a window compared to the nastiness you see when you hit pause on your DVR during a football game (also a best-case scenario, most cable/broadcast/sat providers ramp up the bitrate to the max for live sports and then set it back down shortly thereafter).

But the 100Gb/s makes no sense to me. Are you (crazy) overcompensating for latency? Are you sending 100% redundant data for error correction? Why in the world would you need that much overhead? I can't imagine it's to send multiple video feeds, the telco companies don't want you to do that because then you order less circuits from them. Plus you'd want at least two circuits anyways in case your primary circuit goes down for some reason.

(Side note: The one benefit to a TV truck using Ethernet as a transmission medium is the fact that these circuits are bi-directional. Transmission circuits nowadays are all unidirectional, meaning you need to order more circuits if you need a return video feed, meaning higher transmission costs. The ability to send return video or even confidence return signals back down the same line would be huge for us and a big money saver.)

Comment Voicemail is immaterial (Score 1) 475

You can always repost a voicemail. US law only mandates that both parties are aware that the content of the phone call is being recorded. Leaving a voicemail implies knowledge that your voice is being recorded, thus there is no issue there. The picture can be more complicated as far as copyright, as just because it's available online doesn't make it fair game.

The more important issue is the fact that the DMCA is unbelievably flawed, and this points out a perfect case. If I use the DMCA to demand a video be removed and you don't do so in a timely manner, I sue you. If I use the DMCA to demand the video be re-posted and you don't do so in a timely manner, I sue you. However there is no severe penalty for misuse of the DMCA. Thus the reason for all the automated DMCA takedown notices - there's no consequences if you get a few wrong. The only ones getting unconditionally screwed in this case are the hosting sites, which is absurd.

For the love of your particular deity, will someone hold the companies who abuse our laws responsible for something?

Comment Does the spectrum match up overseas? (Score 1) 114

What a great idea! Can't believe I didn't think of trying this! That basically amounts to free international calling, and the ability to use my american cell phone (without a SIM card) overseas!

Sprint makes a device called the Airave that acts as a mini-cell tower over a DSL line. I imagine it could be plugged into any DSL line overseas, and route calls and voicemails to my cell phone in another country. Even if Sprint had some geographical limitations as to where the traffic could come from, I could tunnel the data back to my house and have it leave from there, at the expense of a little extra lag.

Does the wireless spectrum match up in, lets say Europe, to allow for this? It would save me a fortune in international calls and prepaid cell phones on trips.

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