Frage von Ravenmaster:
I just right now a different capture options dealt with but one question has not been elucidated so well. And that why the HD material via Firewire be transferred "only" 1440x1080 with HDMI, but 1920x1080. Is the fact that 1920 does not fit on the tape? Or is the bandwidth of FireWire is just too small for HD quantities of data? Or is it even something completely different? Please clarify for me:)
Antwort von deti:
Since HDV was set at: https: / / secure.wikimedia.org / wikipedia / en / wiki / HDV_% 29% 28Videoformat
For 1920x1080 you would need for a comparable image quality in MPEG2 codec, more bandwidth than 25Mbit / s and that is the limit when recording to DV tapes. Firewire could be more, but there is no standard for it.
Deti
Antwort von Ravenmaster:
Achso ... so is the tape that I do not blame via Firewire can exploit the full potential of my camera right?
Antwort von deti:
Achso ... so is the tape that I do not blame via Firewire can exploit the full potential of my camera right? Can you say that. In the early days of HD 1440x1080 synonymous was common in the professional area, far away. Meanwhile, the more efficient H.264 codec mainly established in the consumer sector, where 17Mbit / s for full-HD well enough already. Your HDV Camera however is still working with tapes and the MPEG2 codec - this combination is not, unfortunately, more art. Today it is the consumer area on flash or disk memory and the H.264 codec. In the professional field, there are MPEG2, but with 35 or 50Mbit / s.
Deti
Antwort von Jott:
The with the 1440 is not bad - synonymous HDCAM and DVCPro HD 1440x1080 work with and are far from being a bulky, but still in daily use. A good camera with 1440-grid always brings a better picture than a 200 ¬ toy with "Full HD" sticker. No panic!
1440 by the way synonymous one (slight) advantage when it comes to the downscaling to SD, for example, for a DVD: is 1440 exactly double of 720, as says the scaler.
Antwort von Frank B.:
I mean (I heard) that it is synonymous HDV camcorder, the output of a full-HD HDMI live image (not by tape coming - HDV Cam as a camera head only). With the recorder you could thus capture full HD.
What the cameras are, I do not know.
Antwort von beiti:
Achso ... so is the tape that I do not blame via Firewire can exploit the full potential of my camera right? There is in addition to the possible Aufösung still a much more important difference:
The standardized HDV transfer via Firewire transmits the unchanged HDV signal, exactly in the compressed MPEG2 stream that is synonymous written to tape. Therefore, one can transfer of HDV camcorder to HDV camcorder HDV loss or cut-films by smart rendering almost loss-free, it is not even a Neukomrimierung (except s.Schnittstellen directly).
In contrast, HDMI is a standard for transmission of uncompressed video signals - which requires a multiple of the HDV bandwidth. Such a signal is actually much higher quality can in the workflow but losses by rescaling with recompression and possibly kill himself. If you want to play, for example, HDV video via HDMI, they are first in the camcorder and decompressed on 1920 Width scaled up, only this standard signal leaves the HDMI output. If you wanted this again in HDV format or cut into an HDV editing system, would reduce the recording device the resolution back to 1440 pixels width and compress the signal is new in MPEG2 - a detour that naturally some loss brings with itself.
So the transfer via Firewire and HDMI differs very much more fundamental than just the resolution. Both have their place.
