[Cin] Missing preset for SD 16:9 Anamorphic Wide DV(D)

Wed Nov 18 03:36:23 CET 2020

Den 17.11.2020 10:16, skrev Andrew Randrianasulu:
> В сообщении от Tuesday 17 November 2020 05:50:40 вы написали:
>> Den 17.11.2020 00:08, skrev Andrew Randrianasulu:
>>> В сообщении от Tuesday 17 November 2020 00:49:44 Terje J. Hanssen via Cin написал(а):
>>>> While HDV and FHD video can rendered for Blu-ray media, the widespread
>>>> DVD can only playback SD video content.
>>>>
>>>> HDV camcorders can during tape playback 1440x1080 anamorphic HDV
>>>> content, downconvert it to Widescreen Anamorphic 16:9 video.
>>>> Is it possible to get a Preset for DV(D) wide 16:9 video?
>> According to my HDV camcorder FX7E's operating guide and S. Mullens
>> handbook, this feature is really named
>> i.Link CONV (Firewire):
>> HDV can be converted and output via i.LINK as widescreen (anamorphic) DV.
>> (I have not yet tested this feature)
>>
>> How did you create the SD DV(D) 16:9 wide screen video?
>> Does it i.e playback and display 16:9 with ffplay and VLC?
> I just rendered project with (display) aspect ratio set to 16:9.
> mplayer seems to display it correctly.
>
>
>>> I tried to cook up something - but I'm not sure if frame rate for PAL 16:9 progressive should be 25 or 50 ...
>> Possibly only interlaced SD formats are valid DVD and Blu-ray SD video
>> formats?
>> https://en.wikipedia.org/wiki/DVD-Video
>> https://en.wikibooks.org/wiki/Inside_DVD-Video/MPEG_Format#Video_Formats
>> https://en.wikipedia.org/wiki/Blu-ray#Video
>>
>> SD         720×480/ 29.97i     4:3 or 16:9[c]
>>                 720×576/ 25i          4:3 or 16:9[c]
>>
>> ^ c These resolutions are stored anamorphically, i.e. they are stretched
>> to the display aspect ratio by the player or display.
> ok ... will look into this even more, at least deleting presets is even faster than copy-pasting and modifying them :}

Much the same from vaious references:

SAR × PAR = DAR.
The ratio of the width to the height of an image is known as the aspect 
ratio, or more precisely the display aspect ratio (DAR) – the aspect 
ratio of the image as displayed; for TV, DAR was traditionally 4:3 
(a.k.a. fullscreen), with 16:9 (a.k.a. widescreen) now the standard for 
HDTV. In digital images, there is a distinction with the storage aspect 
ratio (SAR), which is the ratio of pixel dimensions. If an image is 
displayed with square pixels, then these ratios agree; if not, then 
non-square, "rectangular" pixels are used, and these ratios disagree. 
The aspect ratio of the pixels themselves is known as the pixel aspect 
ratio (PAR) – for square pixels this is 1:1 – and these are related by 
the identity:

Note that sources differ on PARs for common formats – for example, 576 
lines (PAL) displayed at 4:3 (DAR) corresponds to either PAR of 12:11 
(if 704×576, SAR = 11:9), or a PAR of 16:15 (if 720×576, SAR = 5:4). See 
references for sources giving both, and SDTV: Resolution for a table of 
storage, display and pixel aspect ratios. Also note that CRT televisions 
do not have pixels, but scanlines.
https://en.wikipedia.org/wiki/Pixel_aspect_ratio#Pixel_aspect_ratios_of_common_video_formats

DVD
To record digital video, DVD-Video uses either H.262/MPEG-2 Part 2 
compression at up to 9.8 Mbit/s (9,800 kbit/s) or MPEG-1 Part 2 
compression at up to 1.856 Mbit/s (1,856 kbit/s). DVD-Video supports 
video with a bit depth of 8 bits per color YCbCr with 4:2:0 chroma 
subsampling.[9][10]
The following formats are allowed for H.262/MPEG-2 Part 2 video:
     At a display rate of 25 frames per second, interlaced (commonly 
used in regions with 50 Hz image scanning frequency):
     720 × 576 pixels (D-1)
     704 × 576 pixels
     At a display rate of 29.97 frames per second, interlaced (commonly 
used in regions with 60 Hz image scanning frequency):
     720 × 480 pixels (D-1)
     704 × 480 pixels

DV
Closely following the ITU-R Rec. 601 standard, DV video employs 
interlaced scanning with the luminance sampling frequency of 13.5 MHz. 
These results in 480 scanlines per complete frame for the 60 Hz system, 
and 576 scanlines per complete frame for the 50 Hz system. In both 
systems the active area contains 720 pixels per scanline, with 704 
pixels used for content and 16 pixels on the sides left for digital 
blanking. The same frame size is used for 4:3 and 16:9 frame aspect 
ratios, resulting in different pixel aspect ratios for fullscreen and 
widescreen video.
https://en.wikipedia.org/wiki/DV#DV_compression

16:9 is the only widescreen aspect ratio natively supported by the DVD 
format. Anamorphic DVD transfers store the information as 5:4 (PAL) or 
3:2 (NTSC) square pixels, which is set to expand to either 16:9 or 4:3, 
which the television or video player handles. A PAL DVD with a full 
frame image may contain a video resolution of 768×576 (4:3 ratio), but a 
video player software will stretch this to 1024×576 square pixels with a 
16:9 flag in order to recreate the correct aspect ratio.
https://en.wikipedia.org/wiki/16:9_aspect_ratio

Understanding Digital Video in Premiere Pro
https://www.agitraining.com/adobe/premiere-pro/tutorials/understanding-digital-video-in-premiere-pro

https://lurkertech.com/lg/video-systems/#576i

>>> https://cloud.mail.ru/public/3N3y/2ZHx1JXEC
>>>
>>>
>>> 	{ N_("PAL 576i (16:9) - DV(D)"),	2, 2, 48000,	1, 1, 25,
>>> 		720,576,   16,9, ILACE_MODE_BOTTOM_FIRST, BC_YUVA8888 },
>>> 	{ N_("PAL 576p (16:9) - DV(D)"),	2, 2, 48000,	1, 1, 25,
>>> 		720,576,   16,9, ILACE_MODE_NOTINTERLACED, BC_YUVA8888 },
>>>
>>> for now I settled on 25 ...

SD DV (a/d conv. from PAL Hi8)
ffplay dv01_07.dv
..... Duration: 00:01:53.28, start: 0.000000, bitrate: 28800 kb/s
     Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 16:15 DAR 4:3], 
25000 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
     Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    9.00 A-V: -0.021 fd=   0 aq=  197KB vq= 4643KB sq=    0B f=0/0

mediainfo dv01_07.dv
Scan type                                : Interlaced
Scan order                               : Bottom Field First

DVD (Cin-GG File > DVD Render from DV)
ffprobe DVD_8mbps_dv01.mpg
....Duration: 00:09:56.49, start: 0.534667, bitrate: 6570 kb/s
     Stream #0:0[0x1bf]: Data: dvd_nav_packet
     Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, 
progressive), 720x576 [SAR 16:15 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 448 kb/s

mediainfo DVD_8mbps_dv01.mpg
...Format                                   : MPEG-PS
Scan type                                : Progressive

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Terje J. H