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live capturen in anderem format

Live capture format to another



Frage von Christian14:
Mai 2006

Hi folks,

I try to live via firewire video capture - it works with Virtaul Dub, etc. DVIO synonymous quite well. However, only the "normal" Avi format. I would love to 720x576 instead prefer a smaller format capture (eg 240x180 or similar).
In Virtual Dub, there is even the function, set this size, but he is only dan an error message. Has anyone any idea how to do it or knows someone is a tolels program for that?
Thank you all right now.
bis denne
c



Antwort von Nightfly!:

I think capturing the need to put yourself s.der camcorders output oriented (ie, 720x576 PAL). A direct conversion is not, I think.

Gruß,
Nightfly.



Antwort von Markus:

Hi All,

The question is, what the recordings will be later, right? You can capture via firewire synonymous with the Windows Media Encoder. This can be usein any image size and frame rate target set.








Antwort von beiti:

Is a matter of computing power. As long as it reached the original one (as a DV-AVI in 720 x 576 pixels), only need to be shoveled data of the tape to the hard drive, the processor was not burdened. If you want to shrink the other hand, live video, the computer must in real time to decode the DV format, resize the picture and then encode the scaled picture may still new.



Antwort von Christian14:

Hello,

schonmal thank you for your answers.
Later I needed a little video in avi container. No WM9 (pity, I find the very well: (), which can not be processed. Prefer divX etc.
That must have been a monster machine, which is obvious - but that is possibly available - I only need to hold appropriate software ...
And thank you to denne
c



Antwort von Markus:

You want an AVI video, because you want to edit it. And then it should be DivX? Now You contradict you but!

Why?
Which codec is the best compromise?



Antwort von LaClemenza:

Why why? ;)

DivX is only the codec, right? In the end, it remains an avi movie. I had always thought: Container: avi or mpeg or something else.
And encode this avi container can be the film with the Indeo codec or the DivX, etc.
Have I misunderstood what da?
c

The PS then it is no DV-Avi, is aware if that was my fault.



Antwort von Christian14:

Oops, Sorry, forgot to login. So I've just written the article.
c



Antwort von beiti:

AVI is only the container, but for editing plays a big role in what format in the container's inside. As long as it is uncompressed video, or at least wise compression of images with a format (eg DV or M-JPEG), the subsequent processing is simple, hard cuts are then 100% lossless. Once there however, a motion-compression (MPEG1 / 2, DivX, etc.) must be decompressed for every film processing, first, which requires much computing power and reduces the quality. The problem of computationally intensive real-time encoding in your case is still to come.

The question remains why you want to live necessarily capture a smaller format, and why you do not go the customary and reasonable way: capture and editing in DV-AVI 720 x 576 pixels, then scaling and encoding of the final (!) Film into the desired format .



Antwort von Christian14:

ok, then I must declare the whole time.
I'm creating lecture recordings with Impatica. That means the video of the lecture will be subsequently placed together with his presentation on the web. The end result is a window that is visible in the upper left a small video and the main part is filled with the presentation, the sync runs it. The process now takes:
90 minutes record,
90 minutes, capture
then recoded into the correct format (say 30 minutes on average)
To synchronize 90 minutes for presentation and video
And then again the rendering of Impatica itself (takes about 2-3 hours).
It now is about 500 minutes for a lecture and a full Congress, where it takes you about 20 lectures, which is approximately too long until everything is finished and the network.
That's why I wanted to shorten the time somewhat. I thought, so I can save even 90 minutes if I live directly capture - but the files are of course infinite, which in turn requires a lot of space. If it was now possible to encode at once, this problem could abhilfe (to be created, and I save my recoded later).
I hope I have the rübergeracht reasonably understandable ... :)
thank you all and I hope you is that a something else.
ciao
c



Antwort von Markus:

When it comes to maximum speed, would offer the following approach:

The lecture will be incorporated by a DV camcorder, that is actually created here is only an image signal. At the same time presenting an overhead / projector combination (if there is) also picked up as a video signal and led to a video mixer. There, the reading aloud using Picture-in-Picture effect appears in the presentation and convert the output signal example of an ADS Tech DVD Xpress DX2 to DivX.

Then the talks already were close to their end in the network. Whether the quality of the ADS-converter for this application is sufficient, I can not judge.



Antwort von Christian14:

Thanks for the reply - I reingeschaut not long ago, why only now the answer.
That's probably cool ne variant, but I need me for the PPT-presentation does not take care of myself - I do it all with Impatica, which is already in the presentation makes a streamfähige, as a film-running presentation.
I have now found another way to get the video data to the desired size. So once again thank s.alle people who have their heads smashed with me ... ;)
ciao
c








Antwort von dotterbart:

hello people. I'm all in exactly the same problem as christian 14 here before a year has already been described. it comes to video recordings of lectures and longer synonymous committees / meetings.

am at the moment the process of trying to exsate with "dv capture live" directly to the live recording via firewire cable into my laptop to compress to. the extent synonymous works quite well with the problem, that said program may work with many codecs, but not with divx (that is actually already synonymous, according to manufacturer, but with me not)

that is, everything works: program, cable, camera ... just not at the divx codec. has anyone any idea why?



Antwort von thos-berlin:

Unfortunately, Christian did not tell us in this thread, as he has got it right now, but only that he has got it right.

This is unfair to those who have made suggestions and pity for people like you who have a similar problem and are now brought to an approach ...



Antwort von dotterbart:

exactly




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