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НедоПЦ играет VideoCD 
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Joined: 08 Jan 2003 23:22
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Задумался я тут вдруг - а можно так накрутить недокомп, чтобы он мог играть VideoCD?
https://en.wikipedia.org/wiki/Video_CD
Они до сих пор достаточно популярны в Азии и доставаемы через тот же eBay

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05 Oct 2017 20:55
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Согласно википедии:
Quote:
Video specifications

Codec: MPEG-1
Resolution:
NTSC: 352x240
PAL/SECAM: 352x288
Aspect Ratio:
NTSC: 4:3
PAL/SECAM: 4:3
Framerate:
NTSC: 29.97 or 23.976 frames per second
PAL/SECAM: 25 frames per second
Bitrate: 1,150 kilobits per second
Rate Control: constant bitrate

Although many DVD video players support playback of VCDs, VCD video is only compatible with the DVD-Video standard if encoded at 29.97 frames per second or 25 frames per second.

The 352x240 and 352x288 (or SIF) resolutions were chosen because it is half the horizontal and vertical resolution of NTSC video, and half the horizontal resolution of PAL (the vertical resolution of PAL already being half of the 576 active lines). This is approximately half the resolution of an analog VHS tape which is ~330 horizontal and 480 vertical (NTSC) or 330x576 (PAL).

Audio specifications

Codec: MPEG-1 Audio Layer II
Sample Frequency: 44,100 hertz (44.1 kHz)
Output: Dual channel or stereo
Bitrate: 224 kilobits per second
Rate Control: Constant bitrate

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05 Oct 2017 20:56
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Есть идеи какие у кого?
Скажем для звука можно чип найти
А для видео? FPGA городить?...

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09 Oct 2017 18:00
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Joined: 02 Jan 2006 02:28
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Ничего путнего не подскажу, т.к. очень поверхностно знаком с алгоритмами. На сколько я помню, были какие-то аппаратные декодеры MPEG-1, которые как раз в бытовых VCD-плеерах использовались.


10 Oct 2017 02:52
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Надо посмотреть доступность таких чипов для публики

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10 Oct 2017 06:25
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CL680 доступен:
https://www.ebay.com/itm/CL680-T128-MPEG-1-decoder-CL680-TQFP128-C-CUBE-Microsystem/282889450838
только он TQFP128...

P.S. Ещё CL480 есть:
https://www.ebay.com/itm/CL480-T128-MPEG-1-decoder-CL480-TQFP128-C-CUBE-Microsystem/121778789025
тоже TQFP128

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03 Apr 2018 17:30
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