lemon
11th March 2003, 14:23
I know much has been talked about field order. ANyway, I cannot find something identic to my case in the forum, so here it goes:
Video card: Aver TV, bt878, btwincap drivers, Windows XP.
I think it always captures upper field first. Anyway, I have a problem.
When capturing from my old good video 8 camera (have not tried capturing from TV) everything seems OK, but when there is a scene change (stopped recording in the camera and continued recording later) I have always a 'fade' frame.
Upper field shows the last frame of the first sequence, lower field shows the first frame of the second sequence. (So I supose it is upper field, and if I swap fields result is horrible).
I have tried the 'field delay' plugin for VirtualDub.
If I delay bottom field, then I get rid of these 'fade frames', and interlacing continues being good (upper field first), but, while being almost not-noticeable when looking moving video, if I compare the frames in detail, they seem to me a little better in the original format than after delaying bottom field.
Must I buy a new pair of glasses because I have burned my eyes trying to find differences and result is better after delaying bottom field?
Can it be a problem 'or feature' of my video camera, that when stopping records only first field of last frame, and when starting records only second field of first frame?
Is there any other field swapping/delaying/anything that I don't know?
I use to capture to DV format from my analogue camera using the MainConcept DV codec. As I know that DV is always bottom field first, and I seem to obtain always upper field first (both per se as well as after delaying bottom field) what will I have to do to not have problems?
I edit my videos with Premiere 6.5 and/or Vegas Video 4 (just trying both to decide what is better for my needs). As normally I will deinterlace to make a XviD avi (probably 50fps instead of 25 to not lose temporal resolution) that will normally not be a problem (I will select field order when deinterlacing). But for some thing I'll need to make SVCDs, or even DVDs.
Will I have problems making SVCDs of wrong order (upper field first) DV avi?
Thanks for the info.
Video card: Aver TV, bt878, btwincap drivers, Windows XP.
I think it always captures upper field first. Anyway, I have a problem.
When capturing from my old good video 8 camera (have not tried capturing from TV) everything seems OK, but when there is a scene change (stopped recording in the camera and continued recording later) I have always a 'fade' frame.
Upper field shows the last frame of the first sequence, lower field shows the first frame of the second sequence. (So I supose it is upper field, and if I swap fields result is horrible).
I have tried the 'field delay' plugin for VirtualDub.
If I delay bottom field, then I get rid of these 'fade frames', and interlacing continues being good (upper field first), but, while being almost not-noticeable when looking moving video, if I compare the frames in detail, they seem to me a little better in the original format than after delaying bottom field.
Must I buy a new pair of glasses because I have burned my eyes trying to find differences and result is better after delaying bottom field?
Can it be a problem 'or feature' of my video camera, that when stopping records only first field of last frame, and when starting records only second field of first frame?
Is there any other field swapping/delaying/anything that I don't know?
I use to capture to DV format from my analogue camera using the MainConcept DV codec. As I know that DV is always bottom field first, and I seem to obtain always upper field first (both per se as well as after delaying bottom field) what will I have to do to not have problems?
I edit my videos with Premiere 6.5 and/or Vegas Video 4 (just trying both to decide what is better for my needs). As normally I will deinterlace to make a XviD avi (probably 50fps instead of 25 to not lose temporal resolution) that will normally not be a problem (I will select field order when deinterlacing). But for some thing I'll need to make SVCDs, or even DVDs.
Will I have problems making SVCDs of wrong order (upper field first) DV avi?
Thanks for the info.