Infoseite // AVCHD without flicker and with super quality!



Frage von ElRaiden:


Hello!

I belong to the HDC-SD1 and owners have already been several H264 codecs can test. Most show a more or less good quality, in all, however, was the annoying flicker available.

Recently, I have the H264 codec of Cyberlink's PowerDVD test can - I'm just excited, the quality is high, the films are very sharp and flicker belongs to the past. The mere viewing of the videos s.Calculator has become pure pleasure, thanks to CyberLink.

But now to my problem: s.and you want to something synonymous to burn a DVD, to put it on a regular DVD player can play. And here is the problem, because any video editing software with their own, much worse H264 codec, sometimes apart of the weak MPEG2 codecs. The result is: the videos are blurred and flicker because their H264 codecs are very inferior.

My question now is: is there a software that can edit AVCHD, and building on the H264 codec of CyberLink can access? Because of this codec is really in my opinion the best on the Martk, and CyberLink's own video editing software for AVCHD does not exist. Would be here Adobe Premiere CS3's capable of doing?

I would be very happy about your help!

Mfg
ElRaiden

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Antwort von mhuber:

if this is the problem of downconverten and deinterlace
times you will read these tips about this by:
http://www.videotreffpunkt.com/thread.php?threadid=4475
gruß cj

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Antwort von WoWu:

.. hallo ElRaiden

... such thing as a plug-in will not exist because it is an implementation process, in which only certain values of the DCT on the Manufacturer and approved the method, as it with the data space fills coefficients.
But exactly what differentiates a good course, synonymous, of a bad codec and I already have a codec with 30% efficiency, or with one other over 80% efficiency.
Nice to hear that the Cyberlink H.264 of the good results achieved with Thee.

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Antwort von Oettinger:

404ERR

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Antwort von WoWu:

Hello ElRaiden ...

This looks at H.264 bit different than before in other codecs, since H264 is a very extensive range s.Tools and profiles available. The implementation is, however, the manufacturers are not required by the standard and especially here differ good of bad implementations. But, of course, synonymous in the quantity of used tools.
Many manufacturer make the performance-intensive tools for a faster processing speed away.
The user holds the fast processing speed then wrongly for the better algorithm. Are often too low profile to reduce the data rate offered, then of course not the full capacity of the H.264 represent.
And otherwise it is of course a question of licensing costs, since MPEG is not a free public domain algorithms, which may use any simple. And not every Softwarebude will acquire the rights to (them).
CyberLink and Adobe but both belong to the initial group of MPEG4 initiative and should therefore both have the necessary long experience, as synonymous with enough already protected by patent (good) algorithms. So I would first try Adobe. There are good chances that the implementation is done sensibly.
If you interested in the topic more precisely, there is plenty of information.

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Antwort von Kleinpetri:

Hi,

I would like the issue once again "get high", as I mentioned a similar problem.

I consider my Panasonic GS500 (miniDV) to a Canon HF100 (AVCHD) for sale. Among other things, the camera is small and, due to SDHC storage no drive noise - especially if I had the raw material is already available in HD, when synonymous me today because the TV still does nothing to help.

I wanted to cut the film (clear, AVCHD is computationally intensive) and then as a PAL-DVD issue, for "today". - "Later" I would have the same project again in HD can render. Insofar as the theory.

Practically, I have noticed - now have a HF100 here - that the recordings s.PC are wonderfully sharp, after the export of cut film is the sharpness but then gone. :-(

To test, I have identical scenes with the GS500 and the HF100 and a row of cut, even with Studio11 and once with Vegas8. - The loss of sharpness with both programs is serious. The picture is somewhat blurred and "listless". If I understand correctly now, this loss of quality when rendering in PAL and the codec used.

Is there (now) NLEs, the native AVCHD editing and may not be so high quality loss? I would with a manual transcode get better results?

Thank you for your advice, I am now somewhat crestfallen. ;-)

Many greetings,
Petri

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Antwort von wolfgang:

404ERR

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Antwort von WoWu:

Hi Peter,

I do not now exactly how you play off, whether on DVD or otherwise, but you've obviously between HD (s.Computer) and SD (s.Television) a serious difference.

Moreover, this down-Convertment Of course, software is made, the different methods may apply. Here is another source of quality loss.

Another point: The H.264 codec uses very sophisticated tools, which excellent results. You transfer such a film, for example, in MPEG2, which is not so sophisticated tools are used, reduces the quality of comprehensible way to the lower quality.
The only way to maintain the high quality transport, would be Blu-ray in the consumer area.

But if you look at SD, you'll inevitably with lower grades have to do.

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Antwort von WoWu:

@ Wolfgang

Quote: We had times of HDV rendering in Pinnacle Studio, Vegas and CS3 (Encore) compared to AVC - anywhere an easily visible Schärfedrop

It is clear ... and always had my speech.
MPEG 2 and H.264 use different methods.
So the result is entirely logical and MPEG2 who once made, would be ill-advised, it transcode to H.264.
Other way around is actually the result of even more serious.

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