DVCPRO HD is the same 1/4" transport as DVCPRO25 and 50, but with a different encoding and much higher bitrate. IIRC they did it by increasing the speed of the tape among other things.
The previous poster is correct. An uncompressed HD signal is around 1.5GBps. IIRC Panasonic and Sony many years ago had some huge VTRs that were 1" tape and managed to record down this full spectrum.
While I'm not sure how DVCPRO HD does it, the defacto format in the industry right now is Sony's HDCAM. HDCAM downsamples that 1.5GBps to 996MBit/sec, then compresses it to about 170MBit/sec which is recorded in the camera to tape. The decision to downsample, then compress, was due to the constraints of the BetaCam transport/format. They wanted cameras the size of the existing DBeta units, and retain all the expertise/reliability of 1/2" Betacam transports. Previously Sony had experimented with 1" and other very large HDTV recording solutions which did not make for easy production in the field. So, they compressed the maximum rate down. First by filtering out information, then, by compressing. HDCAM is the minimum for professional HDTV production.
What you're referring to in your earlier post is terrestrial broadcast HDTV, which is, as you say, 19 or 25 Mbit. The distribution format rate is always much less than the acquisition or editing format rate, in order to preserve as much quality as possible. For example, a digital satellite SDTV signal could be 3MBit/sec or so, but SDTV uncompressed is 270MBit/sec (SMPTE 259). Whoever's shooting will probably acquire on DBeta or, film transfer onto DBeta. By the time it gets to you, it's much lower.
What does the JVC HD10 do?
The JVC consumer camera, the HD10 uses a format called HDV as you mention. HDV is not a professional codec/format, but designed for the consumer market. It uses MPEG2-TS, recorded onto a miniDV tape/transport at 25Mbit/sec. It is highly compressed, and coupled with the single CCD of the JVC unit, is more of a gimmick and less than for serious use. The only people so far who have expressed any interest in that camera are primarily indie filmmakers and yuppies with too much money.:)
Apple's choice of DVCPRO HD is an interesting one for codec support. It may be closer to their target user base-somewhere corporate/industrial and less high end/finishing post. AFAIK, HDCAM is preferred these days.
I was watching this Japanese documentary (thank goodness it was subtitled!) about canon's development of the digital camera. Some things to keep in mind of the time:
What was the name of this documentary? Sounds interesting...
I borrowed this book from my university library and really enjoyed reading about the development of Smalltalk, laser printers, an optical network link from two PARC buildings, Ethernet, and of course, the Alto.
The Amiga, with Toaster or whatever else has never been an NLE (non-linear video editor). Professional NLEs are Avid (Mac and Windows) and Apple's Final Cut Pro (Mac only, of course). There are a few others for hobbyists.
You're completely wrong. The Amiga had several NLE systems designed for it, including the Flyer Toaster (an addon board for the VideoToaster), the MacroSystems VLAB Motion, and the Applied Magic Digital Broadcaster.
In addition, two entire NLE turnkey systems, the MacroSystems Draco and MacroSystems Casablanca were based on the Amiga hardware and OS. The latter sold pretty heavily into educational institutions because it was simple to use and almost VCR like in operation.
As for whether or not you consider them professional, the majority of Amiga NLE users were lower end--they used them for everything from corporate training videos to local broadcast market productions. A lot of small firms used the Amiga as an NLE, and made a good amount of money doing it. Not everyone uses an Avid to cut a wedding video or a training film about machine tools, but there certain were a lot of Amiga shops.
A cop has a need for all these devices for his job, which is to protect the public. He needs the laptop to lookup potential criminals, the radios to keep in touch when a crime or accident is reported.
You on the other hand, are not a law enforcement officer or emergency worker.
The best way to get a job like this would be to get some experience building stuff. Legos are CHEAP on eBay available in bulk lots or even Complete mindstorms sets
This is the Slashdot mentality that also thinks management jobs are easy.
Building Lego professionally is one of the most difficult tasks out there. The amount of material needed to build displays for shows, events and parks goes beyond what you can buy off Ebay because "Legos are cheap".
Imagine someone saying that writing code or administrating a LAN is easy because gcc is free or network hubs are cheap.
Burns plays hardball, managing to repurchase the plant for only $50 million.
The Germans reluctantly agree...
Horst: [threatingly] We Germans aren't all smiles und sunshine.
Burns: [recoils in mock horror]
Oooh, the Germans are mad at me. I'm so scared! Oooh, the Germans!
[hiding behind Smithers] Uh oh, the Germans are going to get me!
Horst: Stop it!
Man 2: Stop, sir.
Burns: Don't let the Germans come after me.
Oh no, the Germans are coming after me.
Man 2: Please stop the `pretending you are scared' game, please.
Horst: Stop it! Stop it!
Burns: [brief pause, then resumes]
No! They're so big and strong!
Man 2: Stop it.
Horst: Stop it, Mr. Burns.
Man 2: Please stop pretending you are scared of us, please, now.
Burns: Oh, protect me from the Germans! The Germans...
Horst: Burns, STOP IT!
An A3000UX is really just a Amiga 3000/25 desktop with a different silkscreen name on the front and an A3070 1/4" tape drive, A2065 Ethernet card, and A2410 TMS 34010 Lowell graphics board.
This is a bit absurd--of all the people who deserve to earn money off that performance, the typesetters and editors are the last on the list. We already paid them for their work, dammit: we paid $1000 for a hundred copies (plus orchestra parts) of something that should be public domain.
It's not absurd to the arrangers, typesetters and editors who have formatted your choral music. You paid for performance rights, not for recording and distribution rights.
The publishers of the score are not in it for the fun of it or for the betterment of society. Who the hell are you to decide who "deserves" the money? They own the arrangement. Deal with it.
(also someone who has recorded a well known university choir and had to deal with distribution and licensing issues)
It's sad that many engineering students end up doing things like PR, fundraisers, etc etc instead of
I disagree. Proposing an project, selling the idea to stakeholders, marketing, project management etc are all parts of real life engineering. No engineer sits at a desk all day and works purely on technical design work. They're also excellent things to put on a resume for jobs later on.
That and not everyone wants the same goals out of the project. They might be from other parts of the university like the business school or students who are looking to do something more people oriented instead of their normal engineering studies.
I think that the designs implemented could be further enhanced by having the blueprints and patents available to the Open Source developer community. Their dedication and strict attention to detail would allow these corporations to tap into new markets.
That's the funniest thing I've read all week. Either it's a hilarious troll, or a comment on how little Slashdotters know about human factors. Or maybe, the article is a troll, the guy who moderated it as "Interesting" is the idiot.
My speculation: The 'optical audio' that this ad touts is an implementation of Yamaha's mLAN, a joint project between Apple and Yamaha begun in 1999.
Two other possibilities could be SPDIF over TOSLINK or something like ADAT LightPipe.
mLAN may be too obscure (isn't it mostly synths?)of an application in comparison to say, SPDIF, which is used on many consumer and professional devices like MiniDisc recorders, DVD players, DAT recorders.
Did the original poster realize that you need a Catalyst switch and a bunch of other expensive Cisco software to get this thing working?!
Granted, compared to a large scale Merdiain 1 implementation it ain't expensive, but it's not quite as simple as buying a $595 phone and a WiFi base station!
No, it's more than just a switch and some software--you need the Cisco CallManager IP PBX servers too.
It's about the same as Nortel solution. Nortel has two options: You can add 802.11 and ethernet VoIP with add in cards, or for new installations, you can always buy a Succession CSE1000 IP PBX. Method 1 means you don't have to junk your existing PBX investment. Method 2 is less expensive than a large M1 due to the IP terminals (less line cards, wiring etc) and trunking (lower TCO).
But Cisco, Nortel or otherwise, if you want to it right (ie, not some homebrew solution), it's not cheap. Cheaper than traditional PBX, agreed, but not cheap like using a headset and using Netmeeting:)
Symbol Technologies has already done this...
on
Cisco's Wi-Fi Phone
·
· Score: 1
As mentioned in the previous post:
http://slashdot.org/comments.pl?sid=61207&cid=5758 604
Symbol has had VoIP phones that work with Nortel, Cisco and Mitel IP PBXes for a while. They even have ones with barcode scanners and the like in them.
Calum
HuffYUV is lossless. That's why he made a point of mentioning that it was specifically that codec. It takes an assload of diskspace (and you thought DV was big... yipes) though.
But if you decode, you'll need to reencode. Native codec editing means if you don't run an overlay, DVE or anything else on the footage, you won't need to reencode that clip.
I can tell you after having used it that it is easy to use the MPEG stream. Just convert it to a HuffYUV encoded AVI and edit from there.
But wouldn't you suffer compression artifacts from going from one codec to another? You'd want to edit native in that format...
DV25 definitely holds enough bandwidth because broadcast 1080i tops out at 18 megabits a second! True though that the color leaves something to be desired...
ATSC 1080i may very well be low speed but that doesn't mean that the acquisition format can be that low rate. IIRC, HDCAM for example goes from a 996Mbps raw HD bitrate to a 140Mbit rate recorded on tape.
For example, just because a DVD has a bitrate of 9.8Mbit doesn't mean that a DV camera with a 25Mbit stream is good enough to fill DVD quality material. As a result, DV25 may be an acceptable bitbucket format for HD archiving, but you want to shoot on something that captures as much of the HD bandwidth as possible, before the artifacting, DVE and other stuff gets to it and it goes out for distribution.
I'm pretty doubtful this camera will sell well. Most of the buzz about this camera post NAB was negative-Industrial/professional users demand 3CCD's for accurate colour reproduction, little to no software exists to support desktop editing of the proprietary MPEG-2-TS compression stream, and the DV25 tape format doesn't carry enough bandwidth to accurately represent the HD picture.
With connectivity to Nortel Succession and Cisco CallManager...the only thing that's new about this is the addition of being able to swap to a cellular system.
I see a lot of posts saying that if you pay people well, if you treat them better etc this won't happen. But it will, because even in the best environments, someone is unhappy.
What people need to remember is that personal integrity is important too. Two wrongs don't make a right.
It's actually impossible to make a perfect cube out of Lego. The ratios of lengths of the sides of the pieces are such that there is no integer multiples which are identical.
Slashdot Mirror
DVCPRO HD:
http://www.panasonic.ca/English/Broadcast/broadca
DVCPRO HD is the same 1/4" transport as DVCPRO25 and 50, but with a different encoding and much higher bitrate. IIRC they did it by increasing the speed of the tape among other things.
The previous poster is correct. An uncompressed HD signal is around 1.5GBps. IIRC Panasonic and Sony many years ago had some huge VTRs that were 1" tape and managed to record down this full spectrum.
While I'm not sure how DVCPRO HD does it, the defacto format in the industry right now is Sony's HDCAM. HDCAM downsamples that 1.5GBps to 996MBit/sec, then compresses it to about 170MBit/sec which is recorded in the camera to tape. The decision to downsample, then compress, was due to the constraints of the BetaCam transport/format. They wanted cameras the size of the existing DBeta units, and retain all the expertise/reliability of 1/2" Betacam transports. Previously Sony had experimented with 1" and other very large HDTV recording solutions which did not make for easy production in the field. So, they compressed the maximum rate down. First by filtering out information, then, by compressing. HDCAM is the minimum for professional HDTV production.
What you're referring to in your earlier post is terrestrial broadcast HDTV, which is, as you say, 19 or 25 Mbit. The distribution format rate is always much less than the acquisition or editing format rate, in order to preserve as much quality as possible. For example, a digital satellite SDTV signal could be 3MBit/sec or so, but SDTV uncompressed is 270MBit/sec (SMPTE 259). Whoever's shooting will probably acquire on DBeta or, film transfer onto DBeta. By the time it gets to you, it's much lower.
What does the JVC HD10 do?
The JVC consumer camera, the HD10 uses a format called HDV as you mention. HDV is not a professional codec/format, but designed for the consumer market. It uses MPEG2-TS, recorded onto a miniDV tape/transport at 25Mbit/sec. It is highly compressed, and coupled with the single CCD of the JVC unit, is more of a gimmick and less than for serious use. The only people so far who have expressed any interest in that camera are primarily indie filmmakers and yuppies with too much money.
Apple's choice of DVCPRO HD is an interesting one for codec support. It may be closer to their target user base-somewhere corporate/industrial and less high end/finishing post. AFAIK, HDCAM is preferred these days.
PowerBook 100 Monochrome Frame
PowerBook 540c Colour Frame
I was watching this Japanese documentary (thank goodness it was subtitled!) about canon's development of the digital camera. Some things to keep in mind of the time:
What was the name of this documentary? Sounds interesting...
There's a really excellent book about PARC and the development of the Alto called Dealers of Lightning:
8 87 308910/103-7794804-1212634?v=glance
http://www.amazon.com/exec/obidos/tg/detail/-/0
I borrowed this book from my university library and really enjoyed reading about the development of Smalltalk, laser printers, an optical network link from two PARC buildings, Ethernet, and of course, the Alto.
Highly recommended.
You're completely wrong. The Amiga had several NLE systems designed for it, including the Flyer Toaster (an addon board for the VideoToaster), the MacroSystems VLAB Motion, and the Applied Magic Digital Broadcaster.
In addition, two entire NLE turnkey systems, the MacroSystems Draco and MacroSystems Casablanca were based on the Amiga hardware and OS. The latter sold pretty heavily into educational institutions because it was simple to use and almost VCR like in operation.
As for whether or not you consider them professional, the majority of Amiga NLE users were lower end--they used them for everything from corporate training videos to local broadcast market productions. A lot of small firms used the Amiga as an NLE, and made a good amount of money doing it. Not everyone uses an Avid to cut a wedding video or a training film about machine tools, but there certain were a lot of Amiga shops.
A cop has a need for all these devices for his job, which is to protect the public. He needs the laptop to lookup potential criminals, the radios to keep in touch when a crime or accident is reported.
You on the other hand, are not a law enforcement officer or emergency worker.
If you can't afford a cheapie eMac, I doubt you'll want to pay for a IBM reference board.
This is the Slashdot mentality that also thinks management jobs are easy.
Building Lego professionally is one of the most difficult tasks out there. The amount of material needed to build displays for shows, events and parks goes beyond what you can buy off Ebay because "Legos are cheap".
Imagine someone saying that writing code or administrating a LAN is easy because gcc is free or network hubs are cheap.
Here's your obligatory Simpsons quote:
Burns plays hardball, managing to repurchase the plant for only $50 million.
The Germans reluctantly agree...
Horst: [threatingly] We Germans aren't all smiles und sunshine.
Burns: [recoils in mock horror]
Oooh, the Germans are mad at me. I'm so scared! Oooh, the Germans!
[hiding behind Smithers] Uh oh, the Germans are going to get me!
Horst: Stop it!
Man 2: Stop, sir.
Burns: Don't let the Germans come after me.
Oh no, the Germans are coming after me.
Man 2: Please stop the `pretending you are scared' game, please.
Horst: Stop it! Stop it!
Burns: [brief pause, then resumes]
No! They're so big and strong!
Man 2: Stop it.
Horst: Stop it, Mr. Burns.
Man 2: Please stop pretending you are scared of us, please, now.
Burns: Oh, protect me from the Germans! The Germans...
Horst: Burns, STOP IT!
Get a Timebase Corrector (TBC). A used DPS Personal TBC 1 should cost you about $100 on EBay. Many VideoToaster systems used to have them.
Another possibility is to run it through a consumer SEG which has framesynchronizers or TBCs onboard (ie, Panasonic WJ-MX series, Videonics MX-series)
Digitizing it into a PC via videocapture or editing card should also work.
http://shop.lego.com/product.asp?p=7468 :)
Get a 3000/25 desktop and you're halfway there.
This is a bit absurd--of all the people who deserve to earn money off that performance, the typesetters and editors are the last on the list. We already paid them for their work, dammit: we paid $1000 for a hundred copies (plus orchestra parts) of something that should be public domain.
It's not absurd to the arrangers, typesetters and editors who have formatted your choral music. You paid for performance rights, not for recording and distribution rights.
The publishers of the score are not in it for the fun of it or for the betterment of society. Who the hell are you to decide who "deserves" the money? They own the arrangement. Deal with it.
(also someone who has recorded a well known university choir and had to deal with distribution and licensing issues)
It's sad that many engineering students end up doing things like PR, fundraisers, etc etc instead of
I disagree. Proposing an project, selling the idea to stakeholders, marketing, project management etc are all parts of real life engineering. No engineer sits at a desk all day and works purely on technical design work. They're also excellent things to put on a resume for jobs later on.
That and not everyone wants the same goals out of the project. They might be from other parts of the university like the business school or students who are looking to do something more people oriented instead of their normal engineering studies.
That's the funniest thing I've read all week. Either it's a hilarious troll, or a comment on how little Slashdotters know about human factors. Or maybe, the article is a troll, the guy who moderated it as "Interesting" is the idiot.
Two other possibilities could be SPDIF over TOSLINK or something like ADAT LightPipe.
mLAN may be too obscure (isn't it mostly synths?)of an application in comparison to say, SPDIF, which is used on many consumer and professional devices like MiniDisc recorders, DVD players, DAT recorders.
Calum
Granted, compared to a large scale Merdiain 1 implementation it ain't expensive, but it's not quite as simple as buying a $595 phone and a WiFi base station!
No, it's more than just a switch and some software--you need the Cisco CallManager IP PBX servers too.
It's about the same as Nortel solution. Nortel has two options: You can add 802.11 and ethernet VoIP with add in cards, or for new installations, you can always buy a Succession CSE1000 IP PBX. Method 1 means you don't have to junk your existing PBX investment. Method 2 is less expensive than a large M1 due to the IP terminals (less line cards, wiring etc) and trunking (lower TCO).
But Cisco, Nortel or otherwise, if you want to it right (ie, not some homebrew solution), it's not cheap. Cheaper than traditional PBX, agreed, but not cheap like using a headset and using Netmeeting
As mentioned in the previous post: http://slashdot.org/comments.pl?sid=61207&cid=5758 604
Symbol has had VoIP phones that work with Nortel, Cisco and Mitel IP PBXes for a while. They even have ones with barcode scanners and the like in them.
Calum
HuffYUV is lossless. That's why he made a point of mentioning that it was specifically that codec. It takes an assload of diskspace (and you thought DV was big... yipes) though.
But if you decode, you'll need to reencode. Native codec editing means if you don't run an overlay, DVE or anything else on the footage, you won't need to reencode that clip.
But wouldn't you suffer compression artifacts from going from one codec to another? You'd want to edit native in that format...
DV25 definitely holds enough bandwidth because broadcast 1080i tops out at 18 megabits a second! True though that the color leaves something to be desired...
ATSC 1080i may very well be low speed but that doesn't mean that the acquisition format can be that low rate. IIRC, HDCAM for example goes from a 996Mbps raw HD bitrate to a 140Mbit rate recorded on tape.
For example, just because a DVD has a bitrate of 9.8Mbit doesn't mean that a DV camera with a 25Mbit stream is good enough to fill DVD quality material. As a result, DV25 may be an acceptable bitbucket format for HD archiving, but you want to shoot on something that captures as much of the HD bandwidth as possible, before the artifacting, DVE and other stuff gets to it and it goes out for distribution.
I'm pretty doubtful this camera will sell well. Most of the buzz about this camera post NAB was negative-Industrial/professional users demand 3CCD's for accurate colour reproduction, little to no software exists to support desktop editing of the proprietary MPEG-2-TS compression stream, and the DV25 tape format doesn't carry enough bandwidth to accurately represent the HD picture.
http://www.symbol.com/products/wireless/voice_over _ip.html
With connectivity to Nortel Succession and Cisco CallManager...the only thing that's new about this is the addition of being able to swap to a cellular system.
You don't even have to ask:
http://guide.lugnet.com/set/3450
calum
I see a lot of posts saying that if you pay people well, if you treat them better etc this won't happen. But it will, because even in the best environments, someone is unhappy.
What people need to remember is that personal integrity is important too. Two wrongs don't make a right.
Sure you can. This design is pretty damned close to being near perfect.