Infoseite // Vs. hardware MPEG2 compression. Software Compression



Frage von Tobias Grendl:


Hello,
I'd like to naively in our forums asking what advantage is by using hardware-MPEG2 compression has?
Ok, I would imagine that the CPU is less impact and that the video material on-the-fly compression and is equal to the start of saving space. But how it looks with the quality. Are HW compressors for example, a Canopus codec superior solution?
More than a few explanatory words, I would be delighted.

MfG - Tobias.

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Antwort von Bruno Peter:

You certainly do not ENCODER and "codec solution?

So, I have the HW MPEG module of Canopus, the encoding from DV tape is in real time. I encode synonymous Canopus ProCoder Express to DV-AVI on the hard drive to MPEG.
With the PCE one gets something more out s.Bildqualität, especially you can make 2Pass encoding order, although synonymous makes the MPEG hardware encoder sense. In many cases, because its not a big difference to notice.

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Antwort von Markus:

Hello Tobias,

Hardware converters are specialists in their field as well as software solutions. The most striking differences (speed, capture directly into MPEG2) you mentioned you know. But like everywhere there are synonymous in the field of better and worse hardware products. Who does not know the cheap A / D converter with USB port, which can only capture in MPEG2 (and this one mieserable MPEG) produce quality?

A significantly higher-priced (and quality appropriate) example is the RT.X100 Matrox video card, which can be exported in real time the Premiere timeline in high quality MPEG2. Moreover, when capturing analog and digital playbacks directly into MPEG2, and be converted to hard drive write.

In terms of stability, speed and quality of results, I think the Matrox card really well. In addition, this card is one of the few hardware solutions (DV playbacks not only analog signals is already) during the capturing in MPEG2 can convert.

But as I said, very cheap is not the Matrox card, of course. Since then arises very question is what are the benefits associated with it.

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Antwort von Fahrenheit-145:

Dear Markus!
Do not you think that such a card for the "Otto-Normal" as we have something with "shoot with cannons at sparrows' has to do?
You as a professional with his own studio PiPaPo need this stuff, but we are where we just probably 1-2 videos a week or even month to produce?
For my part, I am more with my PVR250 than satisfied, in addition a nexus for digital satellite and that's been synonymous (both have mpeg2 encoder board). The Right to Programs and the world is once I had the same OK.Vorher PVR, but one without hardware MPEG-decoder, the Picture and the bit rate was not really exhilarating, just enough to eliminate from a VCD; High 3rd choice easy.
Onboard decoder pays off in every case except if you have "massive character issues" stands.
Greetings from Vienna
Peter

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Antwort von Markus:

Hello Peter,

it is not causally involved a purchase decision, but to qualitative questions about software and hardware solutions.

While there are certainly ambitious videographers who attach importance to real-time value, for example because they are older recordings of an equally old Panasonic camcorder and have no color correction for minutes each time to render. Since it is naturally beautiful, is if the hardware-based MPEG-2 conversion immediately synonymous with it. ;-)

By the way, as a "true professional" I see myself not synonymous. I have neither a proven training in this area with the work I earn my bread. And more than "1-2 videos per week or a month," I do not synonymous. ;-)

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Antwort von Gast:

Nevertheless, one should know what you speak of. The Nexus does not have onboard encoder but only a decoder.

Greeting - Away

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Antwort von Gast:

Ooops. This reference was of course s.Peter from Vienna. Mark was faster ..... and before he / she prefers misunderstand this quick addendum.

Greeting - Away

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Antwort von Fahrenheit-145:

Sorry, of course, the Nexus can not really capturing therefore encoder (but the same chip just the other way!
Greetings from Vienna
P.

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Antwort von Markus:

"Guest" wrote: ..... And before he misunderstands what this rather quick addendum.

No, no, that was clear. I had written about the nexus nothing at all. (... as if I misunderstand something ever!) * fg * ;-)

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