Newsmeldung von slashCAM:AVCHD: The future of thomas - 10 Jul 2007 13:44:00 This article speculates that in future the standard format AVCHD camcorder for HDV and will be replacing.
In the professional segment, Panasonic already has a professional version of AVCHD, which uses 4:2:2 Farbsampling and only intra-frame compression (ie, for each picture) - leading to a halving of the data rate of DVC PRO HD and that should lead to trouble Editing of AVCHD footage with long GOP eliminated sequences.
The Basics: the original AVCHD specification defines a Resolutionvon 720x480 up to 1920x1080, supports 4:3 and 16:9 aspect ratios, 4:2:0 sampling, PCM (1-7.1 channels), or Dolby AC3 audio (1-5.1 channels) a maximum of 18Mbit / s and provides only tapeless recording media such as DVD, SD cards or hard disks before which in the long GOP format with I / B and P frames will be compressed.
To
Marktübersicht of AVCHD -CamcordernThis is an auto-generated entry
Here is the link to the news with links and images on the pages Slashcam Magazine
Antwort von Valentino:
The author seems somehow the consumer AVCHD standard with professional MPEG4 to be confused. Somehow, the argument is very far-fetched, I behaute synonymous AVCHD is not enforceable because HDCAM SR, which is synonymous to MPEG4 very successful. It seems to me the love of the Lord to come home, Panasonic, somehow holding his DVC PRO HD devices to be happening, because HDV competition is so successful. With a good NLE has been around for almost a year to cut unnecessary HDV.
Antwort von mauriceg@gmx.de:
AVCHD is going to record HDV at the moment some of the HD-Video - Standard (!) without committing s.mechanisch sensitive tape drives.
I searched for my DV-tape era simply do not want more, I am in the HD domain with dropouts, head drum wear, etc. have been addressed and a few months aud AVCHD with storage on hard disk set (SonyHDR-E-SR1) and am always still excited.
Since I GV Edius 4 as the editing program to use, I can easily over the AVCHD -> Canopus HQ - Conversion without limitation in the best quality cut (with the free update for Edius 4.5 synonymous native AVCHD support will bring).
For me, the srikte binding of HDV s.Bandcassetten the KO criterion.
Greeting
Uwe
Antwort von uho:
Also for me is the detention of the s.Kassetten HDV HV20 no reason to buy. Because of the G7 JVC poor reviewers got this camera, despite recording to hard drive no alternative.
I hope that soon a "sensible" HDV Camera to SD or hard drive on the market, something like a Canon HV30 ...
Antwort von Bernd E.:
I hope that soon a "sensible" HDV Camera to SD or hard drive on the market ...
Since HDV already of the definition only on DV tape, is not to be expected.
Gruß Bernd E.
Antwort von uho:
Bernd E. is right, that HDV tape-based, but mpeg2 is media independent. The idea of JVC a hard drive to use is great,
Unfortunately, the picture quality of this camera a different story ...
I hope that soon mpeg2-based video cameras (Canon of ...) with good quality on SD / hard drive there.
Antwort von Filmsepp:
Is there not a tape for AVCHD? I love tape! They're cheap, I can be archived and problems with dropouts I've honestly never had, at least not with my 2-euro Sony Tapes (synonymous of stations which have never had to grumble). As the archiving of raw material then with hard look, I can not imagine. I do not make me wickedly expensive plates on a shelf, its interfaces after a few years probably are no longer marketable ...
Antwort von Pax0r:
Is there not a tape for AVCHD? I love tape! They're cheap, I can be archived and problems with dropouts I've honestly never had, at least not with my 2-euro Sony Tapes (synonymous of stations which have never had to grumble). As the archiving of raw material then with hard look, I can not imagine. I do not make me wickedly expensive plates on a shelf, its interfaces after a few years probably are no longer marketable ...
If you have high resolution material on record cassette want, you take HDV. The sense of AVCHD is yes, hard drive and SD to write. Only thus will be highly compressed ...
Antwort von uho:
It was repeatedly mentioned that the advantage in terms of bands SD cards is archiving. To this end my comments and why I advise against:
s.Falls you for some reason the tapes after 10 years of memory fetches is the big chance that these mechanically no longer can play. For example, I personally have a 2002, a D8-purchased video camera, which now is destroyed and so are the tapes for me, "worthless". Who, for example, still a record, or who will be in 10 years even VHS tapes can play?
b) Even after years if you still have the right camera, the tapes could be mechanically and chemically altered to be. A tape will remain a tape, if synonymous digitally recorded. While there are bug fixes but if "too much" is gone, you can feed the data into the wind writing.
c) The question is whether one synonymous in 10 years nor graphic / Editierkarten with VHS / S-VHS (ie analog) - In has?
d) Tapes must always play 1:1.
d) The alternative of course is on HD or DVD for archiving. Given the prices of these media is not an issue. I prefer
anyway first of all on HD tape to editierenum the Kameramechnik life. Of course you have to be every 5 years to make new copies, but then again there are new techniques (BD, holography), so it is always easier to archive.
Antwort von highdev:
and in the parallel operation. With a Fire doors fitted the data via firewire written is archived on DV tape. At least with my JVC HD200 gehts.
I do not want to come into the situation, an important event to film and then head to crash. Then everything is gone. For a cracked tape (I had never been) you can what it is easy to restore. The same can happen with memory cards. 2 SD cards I have already given up the spirit. Without any warning. There is nothing more with screw ...
Antwort von highdev:
ups, first row away. Wanted to say that recording is synonymous with HDV and is now up ... read more :-)
Antwort von morgan:
For me, AVCHD in the "professional" sector due to the low Datentrate no alternative. I count on the future development of AVC INTRALINK. I have no long-GOP structure, the I-frame compression of AVC-INTRA picture makes each individually addressable and is thus synonymous not so hungry regarding performance editing system. Also, the quality codec of AVC-Intra is impressive: it reached with 50 Mbit / s data rate the same quality as with DVC PRO HD with 100 Mbit / s. Other great features of AVC Intra His 4:2:2 sampling at 10 bit at full 1920x1440 (no subsampling like most HD (V) codec where only recorded 1440x1080), and all that with a data rate of 100 Mbit / s . What more could you want. I'm waiting on first affordable cameras of Panasonic or Sony, this format for the P2 and XDCAM EX support. For me, this is the future. Not AVCHD or HDV.
my 2 cents,
morgan
Antwort von Markus:
s.Falls you for some reason the tapes after 10 years of memory fetches is the big chance that these mechanically no longer can play.
I often get so old tapes and it was never a fact that has been stored so badly that it no longer ran. Some ask first, perhaps for something handmade, but then they go again. Unfortunately, users often forget that recordings of its kind needs to maintain.
... who will be 10 years or VHS tapes can play?
If everything goes well, I will still be able - not least because my own stock s.VHS and SVHS tapes. ;-)
c) The question is whether one synonymous in 10 years nor graphic / Editierkarten with VHS / S-VHS (ie analog) - In has?
Dto.
d) Tapes must always play 1:1.
DVCAM can (with the correct CNAC) in quadruplicate speed capture. I suppose there is still synonymous other tape formats, with which such a thing is possible. - Amateur filmmakers also do not have the time pressures of the pros and two hours of video recordings during relaxed evening television time.
Antwort von AndyZZ:
s.Falls you for some reason the tapes after 10 years of memory fetches is the big chance that these mechanically no longer can play.
I often get so old tapes and it was never a fact that has been stored so badly that it no longer ran. Some ask first, perhaps for something handmade, but then they go again. Unfortunately, users often forget that recordings of its kind needs to maintain.
.
uho thought more likely that a suitable media player no longer will be available.
1935/36 first plastic tape (tape reels)
1970 Compact Cassette
VHS 1976
1983 Compact Disc
1996 DVD
2006 Blue-Ray, HD-DVD
The distances between the innovation and ensure that the product cycles are becoming shorter.
I still have a turntable and some LPs at home, but for my compact cassette player, I have no more (the old car left aside).
My VHS tape (still have about 40 with Leercassetten book cover - who has an interest?), I have mostly already sold.
Antwort von kitanai:
There are the ancient Egyptians clear advantage
Antwort von Ben2:
Hi,
could not MJPEG FullHD again for an interesting alternative (hard drive camcorder, Frame for NLE)? How high would the data?
Possibly. it is still smaller than FullHD-MPEG2 I-frame only?
Greeting
Ben
Antwort von wolfgang:
With extremely high data rates - yes. But then one can at the same codecs Intremediate remain the Cineform or Canopus offers.
We are strongly growing sales of devices AVCHD see - in the consumer area. With all its advantages and disadvantages of HDV versus AVCHD halt so s.sich has. Obs one pleases, or not.
Professional HDV formats are not yet AVCHD, which should slowly around it.
Antwort von DrBen:
404ERR
Antwort von domain:
One of the advantages of MJP2 should lossless recompression over several generations, as well as the fact only on the frame-based coding, what with AVC-I, apparently not the case.
Text excerpt from http://www.panasonic-broadcast.de/de/technologie/AVC-Intra/avc_3_intra_technolgie.php
"Intra-coding
In intra-coding from the content is already encoded images of the likely content of the subsequent images predicted. If this little of the former distinguished for the deviation is synonymous only a small amount of data required ... The resulting difference, therefore, synonymous coding difference, is compressed. The remaining amount of data (it is the difference of the predicted with the actual picture) is jointly operated with the Picture vorherberechneten recorded "
That sounds pretty but again only after a long-GOP-method, where yes sometimes synonymous only difference information is calculated and recorded, or do I understand the text is not correct?
After a clean single encoding with all its benefits in any event, it sounds not.
In my opinion, creates the DWT-Compression synonymous to "cinematic" images, see http://de.wikipedia.org/wiki/JPEG2000
