Frage von schoeef:
Hi,
I'm new here and still very haphazard.
Meanwhile, I have read countless forum posts, but somehow I do not come next.
To my question ... I keep getting. Mpg material.
How does that with the fields. In principle, they should have been processed with the lower field. Back and again I get material with the setting of upper field. As far as I am well read I understand it so ... The setting of the field is always to make s.der Camera and can be in
Customize mpeg not change. Somehow, I stand fully on the as yet Leitung.Was mean synonymous, would I make a mpeg provided no field change everything.
Thank you and have understanding for Beginners
Antwort von tommyb:
Nja ... to grasp so it short:
The recording format or the codec sets the field order. I prefer not to change in the camera, because the order is more or less set by default (that's how strict, can certainly explain WoWu detail).
Generally stated:
DV = Digital Video = always lower field first / bottom field first
far (MPEG1 / 2, AVCHD, etc.) = upper field first
It is actually possible to spend synonymous videos, where the field order of dances from the "series" that is synonymous a MPEG2 file can be BFF (Bottom Field First) are - only they must be even according to its synonymous marked as in the meta-data.
That's usually always with the encoder to create the MPEG2 file. Processed it but next this file (Reencodieren to a different codec / format) and thereby violated the new encoder, the field order, it can quickly lead to problems later in the chain, because the encoder may simply assumes only that the MPEG2 file TFF is necessary to adequately without it.
Stupid way to put out the synonymous only if the material is interlaced again playing off and then on the Television to a kind of "crab" is - that is, the temporal images jerk back and back.
DVD Players come with TFF or BFF way be confused with it as long as the order is flagged correctly in the metadata.
Antwort von WoWu:
@ Schoeef
First of welcome to the forum.
Tommy has already said a lot to and I can really only be filled in later.
The Field Order, that is, the field sequence is not determined by a standard, so each Manufacturer is free to begin with the field that contains the rows 2 to n, or with the field that contains 1 to n.
The reason is that in the analog line image even half a line (line 0) and gave the Manufacturer, the blankt not this half-line have, just with 0,2,4, etc, that started this HB.
Other Manufacturers have omitted the 0 and with 1,3,5, etc, that started the HB.
And there's been the dilemma. If 0 is the first line, that would be the upper HB and the lower one.
Manufacturer 1 to begin with but would be the upper HB. You see, it's kind of a mess.
This is precisely the lack of a standard ...
began in 1962 when Ampex so, all the signals to F2 were dominant. After you have said that we should be guided s.der first visible line, that F1, because after that depends on the time code synonymous.
The EBU Technical Recommendation R62, in its 1998 and ITU-Recomedtion BT.47021 prescribed the top field for the analog PAL transmission method as the first in the Field Order.
For digitization and subsequent transmission via a SDI interface was s.dieser Field order stated (ITU-R 601 or ITU-R BT.656).
It should be noted that the regulation of different TV systems with 525 lines.
The field order on the first field only applies to systems with 625 lines and the establishment of the second field is valid for 525 line systems.
The Sony DigiBeta refers to this policy and similar to the definition SDI and the odd fields required first, so the "upper" field, as long as it is a 625 line MAZ.
The DV - standard states, however, that always the "lower" field, which is the "odd" field is first recorded.
The Sony DVCAM Mazen therefore draw with a different field dominance as the Digi-Beta and this applied to synonymous so the FireWire interface.
However, if the signal is transmitted over SDI, it is exactly reversed. Referring therefore a Picture with field dominance from a Digi-Beta or an SDI interface, one can not expect a top field in the Field Order.
The field order is therefore not determined solely on the image format, but synonymous, whether the Manufacturer, or interfaces such as SDI or HDSDI, an appropriate, given the format Field Order "by rich".
be Betacam (SP / SX) IMX, HDCAM, DV and all derivatives, other than Digi-Beta, present a lower field dominance, provided that the signal is not recorded on SDI (HDSDI).
HDTV (1080i), the world is again on the head and sets the top field as the field order on DV / ATSC and is "odd" before.
Such a difference in dominance includes but synonymous, that are changed during the recording of material, for example in the production of a DVD, under certain circumstances the dominance must.
If material is cut, which comes from the DV world, so DVCAM, IMX or DVCPro do material and look at it on a PAL TV set, either set the field dominance in the recording of F2 to F1 and then cut in F1 to be or be cut with the original dominance and change in the creation of the DVD to F1.
Then see the DVD on a PAL
analog device properly. If you want to 1080i and DV material - material mix in a timeline, you have to turn either one kind of dominance and also possibly again in the playout.
That depends on whether NTSC / ATSC or PAL is the target version.
You see, there is no standard as reducing clutter inside.
Therefore the rolling field order anything unusual and every NLE are therefore able to rotate, the Field Order.
So:
In principle, they should have been processed with the lower field. .... something like this is not true.
Who works with fields, must know exactly where the M
