вт, 16 янв. 2024 г., 04:02 Terje J. Hanssen via Cin <cin@lists.cinelerra-gg.org>:

According to wikipedia, 16:9 SD video formats are also valid BD-Video formats
https://en.wikipedia.org/wiki/Blu-ray#Video

SD 720 × 480 29.97i 4:3 or 16:9[d] (anamorhic)
720 × 576 25i 4:3 or 16:9[d]

The Create BD Format contains 720 x 576/ 25i/p and 720 x 480/ 29.97i/p

Please verify if this these are SD 4:3 only?
The wikipedia table lists only SD interlaced as valid SD BD-Video format

I just send Phyllis our yesteryear whitepaper from 2010 (creation date), and yeah, it only lists sd interlaced formats.

BUT some formats marked with "*" , they are not in spec yet playable by some hardware.

from cinelerra/bdcreate.C

static struct bd_format {

const char *name;

int w, h;

double framerate;

int wide, interlaced;

} bd_formats[] = {

// framerates are frames, not fields, per second, *=not standard

{ "1920x1080 29.97i", 1920,1080, 29.97, 1, ILACE_MODE_TOP_FIRST },

{ "1920x1080 29.97p*", 1920,1080, 29.97, 1, ILACE_MODE_FAKE_INTERLACE },

{ "1920x1080 24p", 1920,1080, 24., 1, ILACE_MODE_NOTINTERLACED },

{ "1920x1080 25i", 1920,1080, 25., 1, ILACE_MODE_TOP_FIRST },

{ "1920x1080 25p*", 1920,1080, 25., 1, ILACE_MODE_FAKE_INTERLACE },

{ "1920x1080 23.976p", 1920,1080, 23.976, 1, ILACE_MODE_NOTINTERLACED },

{ "1440x1080 29.97i", 1440,1080, 29.97, -1, ILACE_MODE_TOP_FIRST },

{ "1440x1080 25i", 1440,1080, 25., -1, ILACE_MODE_TOP_FIRST },

{ "1440x1080 24p", 1440,1080, 24., -1, ILACE_MODE_NOTINTERLACED },

{ "1440x1080 23.976p", 1440,1080, 23.976,-1, ILACE_MODE_NOTINTERLACED },

{ "1280x720 59.94p", 1280,720, 59.94, 1, ILACE_MODE_NOTINTERLACED },

{ "1280x720 50p", 1280,720, 50., 1, ILACE_MODE_NOTINTERLACED },

{ "1280x720 29.97p*", 1280,720, 29.97, 1, ILACE_MODE_NOTINTERLACED },

{ "1280x720 25p*", 1280,720, 25., 1, ILACE_MODE_NOTINTERLACED },

{ "1280x720 24p", 1280,720, 24., 1, ILACE_MODE_NOTINTERLACED }, { "1280x720 23.976p", 1280,720, 23.976, 1, ILACE_MODE_NOTINTERLACED },

{ "720x576 25i", 720,576, 25., 0, ILACE_MODE_BOTTOM_FIRST },

{ "720x576 25p*", 720,576, 25., 0, ILACE_MODE_NOTINTERLACED },

{ "720x480 29.97i", 720,480, 29.97, 0, ILACE_MODE_BOTTOM_FIRST },

{ "720x480 29.97p*", 720,480, 29.97, 0, ILACE_MODE_NOTINTERLACED },

};

so yeah, seems like sd 16:9 missing. easy to add

I wonder if we should modify 1440*1080 presets to also be wide always? How it looks now {if source is hdv unscaled} in real (HD) TV connected to BD player

If so, SD 16:9 interlaced are missing, while SD progressive are invalid?

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