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@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