[Cin] Missing preset for SD 16:9 Anamorphic Wide DV(D)
Phyllis Smith
phylsmith2017 at gmail.com
Fri Nov 27 01:26:27 CET 2020
Andrew,
The patch DEFAULT_FORMATS-4 has been tested and is now checked into GIT.
Either the split of 1080P/60 and 1080P/59.94 will clarify this for the
users or else confuse them in trying to figure out which one to pick ( ;
!!
On Mon, Nov 16, 2020 at 4:23 PM Andrew Randrianasulu via Cin <
cin at lists.cinelerra-gg.org> wrote:94
> 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?
>
> I tried to cook up something - but I'm not sure if frame rate for PAL 16:9
> progressive should be 25 or 50 ...
>
> 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 at 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
> >
>
>
> --
> Cin mailing list
> Cin at lists.cinelerra-gg.org
> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>
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