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It is currently 11 May 2024, 13:43
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ld_out
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Post subject: Re: (WIP) Laserdisc software image decoder from raw signal Posted: 07 May 2023, 22:01 |
Third post and above |
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Joined: 03 May 2023, 01:52 Posts: 3 Location: United Kingdom Has thanked: 0 time Been thanked: 0 time
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Thanks for that, I too am aware of VHS-Decode (something I want to visit eagerly)! However I was referring to the PCBs and KiCad files (if i am correct) to manufacture them physically and make them fully functional. But because of the vast amount on the github, I don't know what files to use if I ever were to approach a manufacturer online or abroad
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laserdisc.ws
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Post subject: Re: (WIP) Laserdisc software image decoder from raw signal Posted: 27 Jul 2023, 21:37 |
Serious fan |
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Joined: 05 Mar 2012, 03:43 Posts: 180 Location: Italy Has thanked: 16 times Been thanked: 12 times
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I have a doubt... reading this page ( https://bitcrush.io/laserwiki/index.php ... ng_Process) it seems that the raw capture is limited only to video... as my memory lacks (a lot) I can't remember IF the laserdisc audio is included in the raw capture, and in case, WHICH one(s) - analog, PCM, AC-3, DTS...
_________________ FanRes - restoring wrong movies, one title at the time! blog.spoRv.com - a blog about video restoration…
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9954tony
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Post subject: Re: (WIP) Laserdisc software image decoder from raw signal Posted: 27 Jul 2023, 21:40 |
Serious fan |
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Joined: 12 Sep 2015, 05:57 Posts: 210 Location: United States Has thanked: 5 times Been thanked: 54 times
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laserdisc.ws wrote: I have a doubt... reading this page ( https://bitcrush.io/laserwiki/index.php ... ng_Process) it seems that the raw capture is limited only to video... as my memory lacks (a lot) I can't remember IF the laserdisc audio is included in the raw capture, and in case, WHICH one(s) - analog, PCM, AC-3, DTS... that is not correct. All of the audio is captured and stored in the RF. Analog and PCM are for sure decodable, i think AC-3 is, and unsure about DTS.
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9954tony
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Post subject: Re: (WIP) Laserdisc software image decoder from raw signal Posted: 27 Jul 2023, 22:52 |
Serious fan |
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Joined: 12 Sep 2015, 05:57 Posts: 210 Location: United States Has thanked: 5 times Been thanked: 54 times
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laserdisc.ws wrote: Thanks!
Curious to know now if AC-3 and DTS are effectively decoded now, or if there are plans to decode them in the future. https://github.com/happycube/ld-decode/issues/622looks like AC3 is done, although still some minor issues on some discs. https://github.com/happycube/ld-decode/pull/772and DTS as well. DTS also mentioned on the wiki https://github.com/happycube/ld-decode/ ... rocess-efmThe ld-decode wiki hasn't been updated, but --AC3 is shown in the help: $ld-decode --help usage: ld-decode [-h] [--start file-location] [--length frames] [--seek frame] [--PAL] [--NTSC] [--NTSCJ] [-m mtf] [--MTF_offset mtf_offset] [--noAGC] [--noDOD] [--noEFM] [--preEFM] [--disable_analog_audio] [--AC3] [--start_fileloc start_fileloc] [--ignoreleadout] [--verboseVITS] [--RF_TBC] [--lowband] [--NTSC_color_notch_filter] [--V4300D_notch_filter] [-d deemp_adjust] [--deemp_low deemp_low] [--deemp_high deemp_high] [-t threads] [-f FREQ] [--analog_audio_frequency AFREQ] [--video_bpf_high FREQ] [--video_lpf FREQ] [--video_lpf_order VLPF_ORDER] [--audio_filterwidth FREQ] infile outfile
Extracts audio and video from raw RF laserdisc captures
positional arguments: infile source file outfile base name for destination files
options: -h, --help show this help message and exit --start file-location, -s file-location rough jump to frame n of capture (default is 0) --length frames, -l frames limit length to n frames --seek frame, -S frame seek to frame n of capture --PAL, -p, --pal source is in PAL format --NTSC, -n, --ntsc source is in NTSC format --NTSCJ, -j source is in NTSC-J (IRE 0 black) format -m mtf, --MTF mtf mtf compensation multiplier --MTF_offset mtf_offset mtf compensation offset --noAGC Disable AGC --noDOD disable dropout detector --noEFM Disable EFM front end --preEFM Write filtered but otherwise pre-processed EFM data --disable_analog_audio, --disable_analogue_audio, --daa Disable analog(ue) audio decoding --AC3 Enable AC3 audio decoding (NTSC only) --start_fileloc start_fileloc jump to precise sample # in the file
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admin
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Post subject: Re: (WIP) Laserdisc software image decoder from raw signal Posted: 21 Apr 2024, 05:48 |
Site Admin |
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Joined: 07 Aug 2002, 23:37 Posts: 4569 Location: Tokyo Has thanked: 299 times Been thanked: 1166 times
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Someone had fund adding a RF out to a HLD-X9 for the Domesday Duplicator! https://page.auctions.yahoo.co.jp/jp/au ... 1132987673Attachment:
i-img1200x1191-1713338229mitvg33068.jpg [ 133.2 KiB | Viewed 313 times ]
Attachment:
i-img600x745-1713338228r0mlqm24.jpg [ 109.78 KiB | Viewed 313 times ]
Julien
_________________ HARDWARE DATABASE HLD-X0/9 LD-S9 OPPO 105/205 SL-1200G LDD-1 MSC-4000 R2144 PONTUS II C45 MC257
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laserdisc.ws
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Post subject: Re: (WIP) Laserdisc software image decoder from raw signal Posted: 23 Apr 2024, 19:14 |
Serious fan |
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Joined: 05 Mar 2012, 03:43 Posts: 180 Location: Italy Has thanked: 16 times Been thanked: 12 times
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admin wrote: Someone had fund adding a RF out to a HLD-X9 for the Domesday Duplicator! Must need some guts to do that! Anyway, a nice job, and the adesive label adds a touch of elegance; well done.
_________________ FanRes - restoring wrong movies, one title at the time! blog.spoRv.com - a blog about video restoration…
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kamm
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Post subject: Re: (WIP) Laserdisc software image decoder from raw signal Posted: 26 Apr 2024, 18:20 |
Shows curiousity |
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Joined: 18 Apr 2009, 21:06 Posts: 20 Location: Tokyo, Japan Has thanked: 9 times Been thanked: 17 times
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That's the future of LaserDisc. It seems realistic that in the forthcoming years we will probably have real-time capable ld-decode in an embedded/dedicated system. "DD RF out mod" will be something like the AC3RF out mod now. And we won't be arguing about comb filters anymore, but about spindle motors, tracking servos, "cleanest RF signal" etc. So, this X9 is future-proof! admin wrote: Someone had fund adding a RF out to a HLD-X9 for the Domesday Duplicator!
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