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Panasonic GH1: MJPEG mit 70 Mbit/s besser als AVCHD?

Panasonic GH1: MJPEG with 70 Mbit / s better than AVCHD?



Newsmeldung von slashCAM:
Juni 2010

Hier geht es zur Newsmeldung: Panasonic GH1: MJPEG with 70 Mbit / s better than AVCHD?




Antwort von domain:

Mjpeg The images are all a track lighter than the comparable H.264 images, but see a total of more photographs, which is less discussed in the sense of noise reduction or edge enhancement. Furthermore, they show remarkably less than Posterise H.264.
Is actually quite interesting overall, but would in practice often require exactly what you have with digital cameras of the first generation in the post anyway always been the first: the sharpening.

I have certainly not been following the whole of Tester13 Hack. But if a major deficiency (not only) of the GH1 not have been resolved, then one can in my view, this camera really only good use for scenic shooting with a lot of background knowledge: the maximum 30 fps of the sensor, we usefully max. 25 fps.
It therefore is no genuine or 50-p 50-i mode no preference in what format will be filmed.
But perhaps I have overlooked as what.



Antwort von pailes:

"Domain" wrote:
I have certainly not been following the whole of Tester13 Hack. But if a major deficiency (not only) of the GH1 not have been resolved, then one can in my view, this camera really only good use for scenic shooting with a lot of background knowledge: the maximum 30 fps of the sensor, we usefully max. 25 fps.
It therefore is no genuine or 50-p 50-i mode no preference in what format will be filmed.

Huh? The camera makes out-of-the-box 720p50 or 1080p25 if one considers the PAL version in their hands. Unfortunately, in MJPEG mode are always 30 frames / s announced, which makes the mode pretty useless in this country.





Antwort von domain:

Yes but the 720p50 consist of two consecutive identical 720p25 stored images. This is apparently undisputed, not only sent Pana has tried to disguise the running of the Canon 550D seems the same.
If you have something on the Internet citations, you will quickly find lots of relevant statements to do so.



Antwort von pailes:

"Domain" wrote:
Yes but the 720p50 consist of two consecutive identical 720p25 stored images.

Have you used the camera before? Apparently not, because the GH1 makes real 720p50, since I work almost exactly one year almost exclusively with the mode. Or maybe you speak of the GF1?



Antwort von deti:

"Pailes" wrote:
"Domain" wrote:
Yes but the 720p50 consist of two consecutive identical 720p25 stored images.

Have you used the camera before? Apparently not, because the GH1 makes real 720p50, since I work almost exactly one year almost exclusively with the mode. Or maybe you speak of the GF1?


@ Domain: The EOS 550D does definitely true 720p50.

It is extremely puzzling if there always will be disseminated false information. Please waive the posting, if you have unsecured information from third-hand or even constitutes your guesses as facts.

Deti



Antwort von pilskopf:

The hack is the NTSC version or the synonymous Pal version or no preference?



Antwort von pailes:

"Deti" wrote:
It is extremely puzzling if there always will be disseminated false information. Please waive the posting, if you have unsecured information from third-hand or even constitutes your guesses as facts.

Since I can only agree.

@ Pilskopf:
Whether PAL or NTSC does not matter beyond the hack synonymous allows you to switch between PAL and NTSC.



Antwort von domain:

Yes true, is a misinformation for the GH1,
refers only to the 1080i50 format.
There are actually only a sensor output of 25 fps ftp://ftp.panasonic.com/pub/Panasonic/pressroom/pdfs/Panasonic_LUMIX_DMC-GH1_Spec_Sheet.pdf
I just made a mistake, sorry.



Antwort von pailes:

"Domain" wrote:
Yes true, is a misinformation for the GH1,
refers only to the 1080i50 format.
There are actually only a sensor output of 25 fps ftp://ftp.panasonic.com/pub/Panasonic/pressroom/pdfs/Panasonic_LUMIX_DMC-GH1_Spec_Sheet.pdf

Now that is now nothing special, the reason is that the AVCHD - Standard provides no native 1080p25 format, that is, either you go to 1080p24 or we packed the 1080p/25-Content in a 1080i stream. Makes the Panasonic AG-HMC151E way synonymous Sun



Antwort von domain:

If I understood correctly, then the 720p50 format is thus the only one that delivers 50 fps.
Too bad, because 720 is not at all for me the question. Well wait times, is as safe to do in the future some, perhaps, appear at least once synonymous true 1080i50, 1080p50, if not



Antwort von pailes:

"Domain" wrote:
If I understood correctly, then the 720p50 format is thus the only one that delivers 50 fps.
Too bad, because 720 is not at all for me the question. Well wait times, is as safe to do in the future some, perhaps, appear at least once synonymous true 1080i50

For a full 720p 921 600 pixels (1280x720) and 1080i has a full screen at 1.0368 million pixels (1920x540) has. 720p has fewer horizontal information as 1080i, 720p it has more vertical information than 1080i. From the information content to give the two format anything, but a progressive signal is cut and handle the processing of a lot easier than interlaced.

"Domain" wrote:
if not 1080p50

Is there already, I see you are not quite as up to date: P
http://www.slashcam.de/news/single/Echte-1080p50-Camcorders-ab-1-000-Euro---Panasonic--8202.html



Antwort von srone:

"Domain" wrote:
Well wait times, is as safe to do in the future some, perhaps, appear at least once synonymous true 1080i50, 1080p50, if not


what is real for you 1080i50, then probably with 100 fields in the second.

LG

SRone



Antwort von pailes:

"SRone" wrote:
what is real for you 1080i50, then probably with 100 fields in the second.

I think he would simply like a video DSLR that accepts the 1080i, but not in the form of 25 frames (and then each one picture twice), but 50 fields, as is usual with the camcorder was / is. That he as nothing compared with 720p50 wins, he probably did not quite understand it.



Antwort von srone:

thanks, that was with the "fake" 1080i50 of DSLRs not realized.

LG

SRone



Antwort von domain:

"Pailes" wrote:

That he as nothing compared with 720p50 wins, he probably did not quite understand it.


What's there not to understand? If I ever household with something new, then it must first 1080, second, third, and p50 slightly larger sensor with Exchangeable optics and. As the thing has to be classified then (camcorder or DSL) does not really matter anymore. The current DSLs meet these requirements not yet, anyway.



Antwort von pailes:

"Domain" wrote:
What's there not to understand?

In your next post above, you had indicated to accept 1080i. Refuse on principle and 720p and 1080i to be deemed as acceptable, I personally find extremely illogical and it is a sign of unawareness.

However, if you wait to 1080p50, then I think the breakthrough will come only when a television standard was festgeklopft for it.



Antwort von domain:

I do not really believe that the long-overdue development to 1080p50 s.irgend a TV standard will be paired. There are very own bandwidth problems that are not in this way for the recording industry. I just think that a picture with a bit less than 1 MPixel resolution offers very little reason, especially given the now almost standard 10 MPixel Digiknipsen. So the 2 mega pixel format of 1080-I see it as synonymous to absolute floor for the TV in the coming years.
The EBU's decision to 720p50 I think that is a smooth wrong decision, since it would remain the same for Pal-plus.
I am therefore very good reasons that it will go to the SD707 of Pana blow by blow in that direction.



Antwort von pailes:

I personally reaches 720p and the quality of GH1 with chopped firmware is great. Have seldom so much joy s.einem piece of technology had, but wait quietly next to 1080p50, wish you a lot of fun.



Antwort von meawk:

Yesterday I ordered another GH1-Body for 599 ¬ (new price) - come Monday or Tuesday s.and then comes right afterwards the hack:

I think the high-Mbit Mjpeg-qualification is simply brilliant. Recent tests of "Pappa Arts" - tester of tester13 - shows that the MJPEG patched the AVCHD are clearly superior: Absolutely clean and artifact-free images. This has been synonymous shown my own tests of the MJPEG mode is clearly superior to AVCHD.

Currently appears the best setting to be:
Q: 384, 330, 300, 276
T: 24, 24, 24, 24
and Color 420> 422

these are the best 720p, which I have seen so far is (by the way synonymous for GF1). At 720p now can not synonymous 5D II anstinken against GF13/GH13 and that has me convinced.

And all this for a camera with a housing price of just under 600 ¬ - this is a house number. The patch of tester13 for GH1 and the GF1 is a milestone. . .

By the way, with higher Q settings can be achieved over 100 Mbps for MJPEG, but requires a "fine tuning" in conjunction with the T-setting.




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