Fwd: Can someone check DV-AVI (type 2) profiles I try to create with real interlaced project?
I actually read some documentation, it says DV (usual Standard Resolution, at least) uses bottom field first: https://www.provideocoalition.com/field_order/ https://forums.creativecow.net/docs/forums/post.php?forumid=8&postid=566441&... so, I put top=0 options in my profiles, they still render. but for HD DV story will be different: https://trac.ffmpeg.org/ticket/5092 ------------ The field order (i.e. topfield first) is wrong for DV HD video. It's actually due to a stupid change they made to the spec. The bits in the VAUX are the same but their meaning changed. In SMPTE 314M, which is for SD, field 2 refers to the even fields and field 1 refers the odd fields. But in SMPTE 370M, which is for HD, field 1 refers to the even fields and field 2 refers to the odd fields. So if the FS bit in the VAUX is 1 it means BFF in SD but TFF in HD. So we need a line in the code to flip the TFF flag if the file is HD. (the current code parses it according to the SMPTE 314M spec regardless of resolution) ------------- I have no idea what will happen if you try to fix two or more sources with different field order .. ---------- Пересланное сообщение ---------- Тема: Can someone check DV-AVI (type 2) profiles I try to create with real interlaced project? Дата: Понедельник 21 октября 2019 Отправитель: Andrew Randrianasulu <[email protected]> Получатель: "Cinelerra.GG" <[email protected]> I was trying to convince CinGG to make AVI DV (type 2, with separate audio, 48Khz/stereo/16 bit) I can use in older versions of Cin or for testing Kino. I think I'm closer to this goal, but I tried to make my dv files out of progressive content. real interlaced source/project probably will require "flags=+ildct+ilme" ? And probably field order .... Attached are my attemts, put avi_pcm_s16.avi in /usr/share/cin/ffmpeg/audio (or where your Cin installation put those profiles) and dv_pal.avi/dv_ntsc.avi in /usr/share/cin/ffmpeg/video Kino was segfaulting if I tried to use 422p (DVCPRO ? ) pixel format at encoding. 411p/420p still works .... Also, theora avi opt file just for lulz. -------------------------------------------------------
Andrew: using some "real" interlaced video here, I tested dv_pal.qt and dv_pal.avi (which will be checked into GIT on the next checkin). It works but the input video was from TV and was already Bottom Field First. In these opts file we had changed top=0 to field_order=bb since that, I believe, is correct with the View options available when switch from viewing "codec" to "ffmpeg". As you pointed out via the documentation, bottom field first is what dvvideo is supposed to generate and when I tried to switch to field_order=anything else (or top=1), it still generated bottom field first I actually read some documentation, it says DV (usual Standard Resolution,
at least) uses bottom field first:
https://www.provideocoalition.com/field_order/
https://forums.creativecow.net/docs/forums/post.php?forumid=8&postid=566441&...
so, I put top=0 options in my profiles, they still render.
Phyllis if you need it, I can send you a short DV sequence in NTSC shot and captured from a DV camera. And indeed, as far as I know, all the DV footage I saw was always Bottom Field First. Pierre On 19-10-29 19 h 13, Phyllis Smith wrote:
Andrew: using some "real" interlaced video here, I tested dv_pal.qt and dv_pal.avi (which will be checked into GIT on the next checkin). It works but the input video was from TV and was already Bottom Field First. In these opts file we had changed top=0 to field_order=bb since that, I believe, is correct with the View options available when switch from viewing "codec" to "ffmpeg". As you pointed out via the documentation, bottom field first is what dvvideo is supposed to generate and when I tried to switch to field_order=anything else (or top=1), it still generated bottom field first
I actually read some documentation, it says DV (usual Standard Resolution, at least) uses bottom field first:
https://www.provideocoalition.com/field_order/ https://forums.creativecow.net/docs/forums/post.php?forumid=8&postid=566441&...
so, I put top=0 options in my profiles, they still render.
participants (3)
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Andrew Randrianasulu -
Phyllis Smith -
Pierre autourduglobe