Frage von jazzy_d:
Are there any principle or in special Cams difference in a quality HDV cameras with HDMI outputs between mpeg2 s.Firewire and the video / audio signal on HDMI?
The question is aimed at the Black Magic Intensity and their on-line from JPEG.
Antwort von WoWu:
Sure there is, because on the FW, you have the original encoded format on HDMI and decoded but the new "digital" and to TMDS signal umcodierte components (RGB or YBR.
Furthermore, when transmitting HDV 4:2:2 to "up" because 4:2:0 on HDMI is not supported.
Antwort von jazzy_d:
And can the HDV cams good / beneficial umcodieren or fill color, or not worth it?
Antwort von WoWu:
Nee, da None Color fills on .... there are only zeros reingestopft, simply because HDMI 4:2:2 and 4:4:4 provides.
The question of the online JPEG, unfortunately I did not understand but you have to always be a HDMI decoded signal ....
Antwort von tommyb:
You will not notice it.
Antwort von WoWu:
If you do not even need to use format, which of the interface are filled with pixels and a different format rauskommt back ...
Antwort von camworks:
at the "zero purely plugs" I am somewhat skeptical. The question is whether the signal before or after the coding into the what-I-know-hauptsache-4 :2:0-memory format to the HDMI port is sent. I can think that there are cameras which are actually true 4:2:2 on HDMI port set.
Antwort von WoWu:
That would be the positive Page ... when you play because you have unfortunately not the right choice.
Antwort von Quadruplex:
The question is aimed at the Black Magic Intensity and their on-line from JPEG. I can understand the Blackmagic folks just to congratulate the Zinnnober of their products has developed ...
It would be very pointless video from an HDV camcorder via HDMI out of bounds and into a new codec to convert. I do not know all the options, the Black Magic offers. But lossless codecs cost only place on the plate, where synonymous lossy codecs ( "Online JPEG"?) Were possible, the quality suffered.
In other words, rausgeworfenes Money.
Antwort von jazzy_d:
So there is no real advantage (except for HDMI output and a few real-time effects), if I tape via the HDMI to the PC with the "online-JPEG AVI" (@ WoWu: this is the compressed codec of Black Magic) go ?
That one at "OnLocation" recordings, so directly of the cam via HDMI, which is probably better than the tape, however, I could well imagine again.
But my concern is actually to the recordings from the tape.
Antwort von Quadruplex:
So there is no real advantage Exactly.
That one at "OnLocation" recordings, so directly of the cam via HDMI, which is probably better than the tape, however, I could well imagine again. Again: no - at least mostly. Reason is that in almost all consumer camcorders, the signal is forced to the MPEG-2-or (groan! Würg!) AVCHD encoder passes.
Antwort von jazzy_d:
"in almost all consumer camcorders, the signal is forced to the MPEG-2-or (groan! würg!) AVCHD encoder passes"
Even though I live image on HDMI abgreiffe? That would mean the signal goes first through the mpeg2 decoder then rose again, according WoWu into a component signal to be recoded? This comes to me more "Spanish" before.
Antwort von WoWu:
@ Jazzy_d
The camcorders have in the record on the HDMI outputs, very often, in fact, the signal
from the data reduction is therefore a good realtiv component signal, which is synonymous for excellent keying is .... and of course, synonymous to record on a less compressed codec.
Better then, than the FW OnLocation coded signal to be recorded!
When playing is, of course, only the decoded signal (where a sensor should be synonymous picture come from?)
Want to work with this picture, we recommend that the original course on Coding FW in the calculator to give and do not have a component of change and a transcription multiplex and a new code in the calculator to go.
Do you want to anyway but a streaming codec out of it and possibly the Picture synonymous change (reduce), it is actually sausage, if you have FW Calculator go Neucoding or HDMI Neucoding.
in almost all consumer camcorders, the signal is forced to the MPEG-2-or (groan! würg!) AVCHD encoder through Mooooooment .... the AVC codec is significantly Tevez should now have around yes. The only problem is that it is currently difficult to natively edit it, because few have the necessary Calculator DSPs available.
If one now but her and uses the DSP and the camcorder is AVC decode and play them via HDMI, the component signal into the calculator, you can with a transparent encoding (most intermediates are not) fully preserve signal quality. Although it is a larger file, but all synonymous times better than MPEG2, so if you value good quality sets, such possibilities should not ignore.
Antwort von Quadruplex:
This comes to me more "Spanish" before. True, but - just use the search function ...
Edit: Quote Video Active 4 / 2007: "Moreover, there is little camcorder to the HDMI output from the internal compression bypass."
Antwort von WoWu:
It is possible that some cameras do so.
One more reason those cameras not to buy ... because the signal is already (at least) in 4:2:2 at.
The Canon HV20 uses any case, the sensor signal.
Antwort von WoWu:
@ Jazzy_d
Try this simple but if you have more than one or two images have temporal displacement, it is the de-and re-encoded signal (GoP of min. 2x 15 frames, ie approximately 1st second).
Is it less, it is the original format.
Antwort von jazzy_d:
In order to test it so I have the Black Magic card. Yeah, I do not :-). I just wanted to find out whether it will ever bring my little HDV Cam (HC3) in terms of image quality. But apparently is synonymous because of marketing at Blackmagic much eyewash available.
I found it interesting but the issue of time to discuss.
My conclusion:
I spare myself the charcoal probably better for a couple of Blu-ray blanks.
