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 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.
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 ...
I tried to re-encode
http://samples.mplayerhq.hu/MPEG2/dothack2.mpg
with PAL 576i - 16:9 preset and it come out as
mplayer /dev/shm/test02.mpeg
MPlayer SVN-r38202-10.0.1 (C) 2000-2020 MPlayer Team
parse error at line 423
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing /dev/shm/test02.mpeg.
libavformat version 58.64.100 (internal)
libavformat file format detected.
[mpeg @ 0x574b7520]stream 1 : no PTS found at end of file, duration not set
[lavf] stream 0: video (mpeg2video), -vid 0
[lavf] stream 1: audio (mp2), -aid 0
VIDEO: [MPG2] 720x576 0bpp 25.000 fps 0.0 kbps ( 0.0 kbyte/s)
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 58.112.101 (internal)
Selected video codec: [ffmpeg2] vfm: ffmpeg (FFmpeg MPEG-2)
==========================================================================
Load subtitles in /dev/shm/
==========================================================================
Forced audio codec: mad
Opening audio decoder: [libmad] libmad mpeg audio decoder
AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
Selected audio codec: [mad] afm: libmad (libMAD MPEG layer 1-2-3)
==========================================================================
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [vdpau] 720x576 => 1024x576 Planar YV12
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [vdpau] 720x576 => 1024x576 Planar YV12
mediainfo /dev/shm/test02.mpeg
General
Complete name : /dev/shm/test02.mpeg
Format : MPEG-PS
File size : 7.65 MiB
Duration : 17 s 16 ms
Overall bit rate mode : Variable
Overall bit rate : 3 771 kb/s
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : No
Format settings, Matrix : Default
Format settings, GOP : N=12
Duration : 17 s 0 ms
Bit rate mode : Variable
Bit rate : 3 312 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.319
Time code of first frame : 00:00:00:00
Time code source : Group of pictures header
GOP, Open/Closed : Open
GOP, Open/Closed of first frame : Closed
Stream size : 6.71 MiB (88%)
Matrix coefficients : BT.601
Audio
ID : 192 (0xC0)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Duration : 17 s 16 ms
Bit rate mode : Constant
Bit rate : 384 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Frame rate : 41.667 FPS (1152 SPF)
Compression mode : Lossy
Delay relative to video : -10 ms
Stream size : 798 KiB (10%)
hm .... it says progressive : /
There already 16:9 encodig presets in Create DVD wizard (? window where you can
select few options inluding telecine, etc. try alt-d in main window)
References
------------------
MPEG-2 DVD-Video (Application)
https://en.wikipedia.org/wiki/MPEG-2#DVD-Video
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. For example, a PAL DVD
with a full frame image may contain a video resolution of 720×576 (5:4
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
-------
DVD Video - Widescreen Anamorphic 16:9 16x9
A DVD labeled as "Widescreen Anamorphic" contains video that has the
same frame size in pixels as traditional fullscreen video, but uses
wider pixels. The shape of the pixels is called pixel aspect ratio and
is encoded in the video stream for a DVD player to correctly identify
the proportions of the video. If an anamorphic DVD video is played on
standard 4:3 television without adjustment, the image will look
horizontally squeezed.
Although currently there is no labeling standard, DVDs with content
originally produced in an aspect ratio wider than 1.33:1 are typically
labeled "Anamorphic Widescreen," "Enhanced for 16:9 televisions,"
"Enhanced for widescreen televisions," or similar. If not so labeled,
the DVD is intended for a 4:3 display ("fullscreen"), and will be
letterboxed or panned and scanned.
https://en.wikipedia.org/wiki/Anamorphic_widescreen#DVD_Video
Terje J. H
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