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'[EE]: single chip MPEG video decoing'
2001\01\27@170355 by Richard Sloan

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Is there any single chip MPEG decoders to NTSC? Can this be done is sofware and what MIPS might be required?

Thanks.

 >>  This is a test  DISCARD.

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2001\01\27@174410 by Chris Carr

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Is there any single chip MPEG decoders to NTSC? Can this be done is sofware
and what MIPS might be required?

Your request is confusing. Do you want to know about MPEG Decoders which
convert Analogue Signals (NTSC, PAL, SECAM et al) to a MPEG Digital Format
(1,2,3....) and if so which Analogue and Digital formats. Or do you want to
know about a MPEG Encoder which converts a MPEG digital format to an
Analogue format signal ?

Chris

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2001\01\27@205244 by Richard Sloan

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I want MPEG to analog signals, I stream MPEG and connect to a TV....

This is encode?
R.

 >>  Is there any single chip MPEG decoders to NTSC? Can this be done is
 >>   sofware
 >>  and what MIPS might be required?

 >>  Your request is confusing. Do you want to know about MPEG Decoders which
 >>  convert Analogue Signals (NTSC, PAL, SECAM et al) to a MPEG Digital Format
 >>  (1,2,3....) and if so which Analogue and Digital formats. Or do you want
 >>   to
 >>  know about a MPEG Encoder which converts a MPEG digital format to an
 >>  Analogue format signal ?

 >>  Chris

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2001\01\27@210523 by Randy Glenn

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I think you've got it backwards - an MPEG Decoder would take MPEG and
turn it into Analog or something else, while the Encoder would do the
opposite. MPEG is the "code" here.

- -Randy Glenn

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- {Original Message removed}

2001\01\28@033725 by Chris Carr

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Analog Devices ADV7197, 7196,
7192,7194,7172,7173,7177,7178,7170,7171,7175,7176a,7175a,7176 are for
Digital  to PAL/NTSC Video Encoding

Analog Devices ADV7183, ADV7185 are Video Decoders converting Composite and
S-Video signals to Digital

Please note you encoding a digital signal to Analogue and decoding an
Analogue Signal to Digital.

SGS-Thompson Microelectroncs have the STV0117A Encoder

http://www.analog.com/
http://us.st.com/stonline/index.shtml

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2001\01\28@233023 by Stephen B Webb

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> Is there any single chip MPEG decoders to NTSC? Can this be done is sofware
> and what MIPS might be required?
>
> Your request is confusing. Do you want to know about MPEG Decoders which
> convert Analogue Signals (NTSC, PAL, SECAM et al) to a MPEG Digital Format
> (1,2,3....) and if so which Analogue and Digital formats. Or do you want to
> know about a MPEG Encoder which converts a MPEG digital format to an
> Analogue format signal ?

I wasn't confused at first, but I sure am now.

I had always thought of an MPEG "decoder" as taking MPEG digital format
and outputting the raw frame data (be it NTSC, or whatever).  Encoders, to
me, take a "raw frame" input and encode it to MPEG specs.

For instance, when DVD players are advertised, often they are comined with
an "MPEG DECODER" card, which allows you to play back the DVD smoothly
even on an older machine.  Encoder cards seem to be mentioned in the
context of video capture, etc.

-Steve

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2001\01\29@003608 by rad0

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I'd like to know about:

MPEG Decoders which
convert Analogue Signals (NTSC) to a MPEG Digital Format???

Is there a chip to do this??

Thanks...

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2001\01\29@050929 by Stuart O'Reilly

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I just thought I would clear some things up here.

Mpeg Encoder= Takes an analogue video signal or an un-compressed digital
video data stream as an input and outputs an MPEG data stream. You will not
find this as a one chip solution.

MPEG Decoder= Takes an MPEG data stream as an input and will output an
analogue video signal or an un-compressed digital video data stream. You
will possibly find this as a multiple chip solution depending on the quality
you would like.

Composite Video= Component, RGB or S- video that has been encoded using a
composite encoder. One chip solution
Regards
Stuart O'Reilly


{Original Message removed}

2001\01\29@064102 by D Lloyd

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part 1 1857 bytes content-type:text/plain; charset=us-ascii
Hi,

Texas have an application note for the TMS320C54x DSP which shows MP3
decoding in one chip. Maybe they have one for MPEG?

Dan




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I just thought I would clear some things up here.

Mpeg Encoder= Takes an analogue video signal or an un-compressed digital
video data stream as an input and outputs an MPEG data stream. You will not
find this as a one chip solution.

MPEG Decoder= Takes an MPEG data stream as an input and will output an
analogue video signal or an un-compressed digital video data stream. You
will possibly find this as a multiple chip solution depending on the
quality
you would like.

Composite Video= Component, RGB or S- video that has been encoded using a
composite encoder. One chip solution
Regards
Stuart O'Reilly


{Original Message removed}
part 2 165 bytes content-type:application/octet-stream; (decode)

part 3 131 bytes
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2001\01\29@070559 by Herbert Graf

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> I'd like to know about:
>
> MPEG Decoders which
> convert Analogue Signals (NTSC) to a MPEG Digital Format???
>
> Is there a chip to do this??

    Yes, however they would traditionally be called MPEG ENCODERS not
decoders, perhaps that is why you are having difficulty finding one. TTYL

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2001\01\29@075216 by dre Domingos F. Souza

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       Look for C-Cube chips...


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       Linux User #85093

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2001\01\29@095515 by rad0

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I'd like to know about:

Mpeg Encoder= Takes an analogue video signal as an input and outputs an MPEG
data stream.

IS THIS THE CORRECT TERMINOLOGY?

IS THERE A CHIP OR TWO TO DO THIS?

thanks...

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2001\01\29@135752 by Chris Carr

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Stewart, I have no intention of getting involved in terminology wars.
If you can quote your sources of reference for the information given
below  then I may be prepared to agree with you. However, the CCIR who are
the international standards setting body DECODE an analogue video signal
into digital and ENCODE a digital signal into analogue video.

If you want chips for a set top box to receive digital video transmissions
you look for Encoder Chips.

Chris


> I just thought I would clear some things up here.
>
> Mpeg Encoder= Takes an analogue video signal or an un-compressed digital
> video data stream as an input and outputs an MPEG data stream. You will
not
> find this as a one chip solution.
>
> MPEG Decoder= Takes an MPEG data stream as an input and will output an
> analogue video signal or an un-compressed digital video data stream. You
> will possibly find this as a multiple chip solution depending on the
quality
> you would like.
>
> Composite Video= Component, RGB or S- video that has been encoded using a
> composite encoder. One chip solution
> Regards
> Stuart O'Reilly
>
>
> {Original Message removed}

2001\01\29@140837 by Sean Breheny

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Well, I would have thought the other way around, too, (same as Stuart)
considering that
MPEG is a method of ENCODING a video signal (especially if you consider
NTSC or other analog video to be a "simpler" or "closer to physical"
representation).

Also, with MPEG audio (MP3), software that you usually use on PCs
definitely uses the terms ENCODE for converting from analog or WAV files
to MP3 and DECODE for normal playback.

Sean


On Mon, 29 Jan 2001, Chris Carr wrote:

{Quote hidden}

> > {Original Message removed}

2001\01\29@151142 by Richard Sloan

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I was the one who started this thread and after looking around it is correct

Encoding is digital to analog
and decoding is analog to digital, its all with respect to the digital in this case.

If you go to **ANY** IC manufacturers site this is what you find.

R.

 >>  Well, I would have thought the other way around, too, (same as Stuart)
 >>  considering that
 >>  MPEG is a method of ENCODING a video signal (especially if you consider
 >>  NTSC or other analog video to be a "simpler" or "closer to physical"
 >>  representation).

 >>  Also, with MPEG audio (MP3), software that you usually use on PCs
 >>  definitely uses the terms ENCODE for converting from analog or WAV files
 >>  to MP3 and DECODE for normal playback.

 >>  Sean


 >>  On Mon, 29 Jan 2001, Chris Carr wrote:

 >>  > Stewart, I have no intention of getting involved in terminology wars.
 >>  > If you can quote your sources of reference for the information given
 >>  > below  then I may be prepared to agree with you. However, the CCIR who
 >>   are
 >>  > the international standards setting body DECODE an analogue video signal
 >>  > into digital and ENCODE a digital signal into analogue video.
 >>  >
 >>  > If you want chips for a set top box to receive digital video
 >>   transmissions
 >>  > you look for Encoder Chips.
 >>  >
 >>  > Chris
 >>  >
 >>  >
 >>  > > I just thought I would clear some things up here.
 >>  > >
 >>  > > Mpeg Encoder= Takes an analogue video signal or an un-compressed
 >>   digital
 >>  > > video data stream as an input and outputs an MPEG data stream. You
 >>   will
 >>  > not
 >>  > > find this as a one chip solution.
 >>  > >
 >>  > > MPEG Decoder= Takes an MPEG data stream as an input and will output an
 >>  > > analogue video signal or an un-compressed digital video data stream.
 >>   You
 >>  > > will possibly find this as a multiple chip solution depending on the
 >>  > quality
 >>  > > you would like.
 >>  > >
 >>  > > Composite Video= Component, RGB or S- video that has been encoded
 >>   using a
 >>  > > composite encoder. One chip solution
 >>  > > Regards
 >>  > > Stuart O'Reilly
 >>  > >
 >>  > >
 >>  > > {Original Message removed}

2001\01\29@152355 by Randy Glenn

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http://www.micronas.com - look at their MAS3507D MPEG1/2 DEcoder. MPEG in,
Audio out.

- -Randy Glenn

This coming from the guy with a system tray 7 icons wide... by 2
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- {Original Message removed}

2001\01\29@173402 by Stuart O'Reilly

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Hmmm, interesting. I got my information from three lectures at a course
I did at the Australian Defence Force Academy. The three lectures are
members of MPEG.
       I also see your point, where I think the terminology gets mixed up a
bit is here, if you DECODE an analogue video signal it is assumed you
are decoding a COMPOSITE video signal (luminance mixed with chroma).
Once it is decoded you now have a component signal, the component signal
consists of three signals Y,U,V (somtimes RGB). This component signal
can be in the form of either an analogue or digital signal. To make an
MPEG data stream you then need to send this Uncompressed digital data
stream, (or if you are using the analogue signal it needs to be
converted to digital first) to an MPEG ENCODER (these can be upto and
over $100K depending on quality).

Regards
Stuart O'Reilly

Chris Carr wrote:
{Quote hidden}

> > {Original Message removed}

2001\01\29@174421 by David Duffy

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Richard Sloan wrote:
>I was the one who started this thread and after looking around it is correct
>
>Encoding is digital to analog
>and decoding is analog to digital, its all with respect to the digital in
>this case.
>
>If you go to **ANY** IC manufacturers site this is what you find.

The first one I went to was C-Cube and look what they call their VCD chips;
www.c-cube.com/product_display.fcfm?ProdID=45
It's the MPEG being DECODED in the player. Yes, the PAL/NTSC video is
ENCODED from the MPEG data but the overall solution is still a DECODER.
What are you really looking for? The player end or the production/source end?
Regards...

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2001\01\29@190540 by Chris Carr

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Please look at the subject line carefully. We are talking about Video not
Audio.

The originator of this thread took the trouble to read EXACTLY what I had
written, then test it by undertaking basic research on the web.

I took care to ensure that there was no doubt I was talking about VIDEO at
no time did I attempt to cloud the issue by mentioning audio or any other
non-digital signal. (Although at least one other person did).

There is one fundamental difference between Analogue Audio and Video one
aims to reproduce an exact facsimile of the sound pressure waves at the
originating end (one dimensional with respect to time), the other "tricks"
human eyes into thinking they are watching an exact facsimile at the remote
end of a visual image (two dimensional with respect to time) as would be
seen by human eyes. Now to obtain the same level of processing on an
acoustic signal, as perceived by a human, as is applied to achieve a PAL,
SECAM, NTSC encoded video signal, one has to apply the same level of
........ I have got bored with this, its so basic, and I have my tax returns
to do before the end of the month otherwise I get a 100 quid (British
Pounds) fine

{Quote hidden}

> - {Original Message removed}

2001\01\29@190945 by rad0

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> It's the MPEG being DECODED in the player. Yes, the PAL/NTSC video is
> ENCODED from the MPEG data but the overall solution is still a DECODER.
> What are you really looking for? The player end or the production/source
end?
> Regards...


I want to convert analogue video into MPEG, so it can
be displayed on a computer and stored in memory.

Any solutions for this are much appreciated.
Thanks.

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2001\01\29@192814 by David Duffy

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> > It's the MPEG being DECODED in the player. Yes, the PAL/NTSC video is
> > ENCODED from the MPEG data but the overall solution is still a DECODER.
> > What are you really looking for? The player end or the
> production/source end?

rad0 wrote:
>I want to convert analogue video into MPEG, so it can
>be displayed on a computer and stored in memory.

Maybe a PC capture card would be the best bet for you.
IIRC, Averkey & such have cheapish ones that work ok.
I don't think you'll find a simple-to-implement encoder solution.
Regards...

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2001\01\29@193936 by Brandon, Tom

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I don't know that there are single chip Analog-MPEG, too much for one device
(i.e. not enough market, apart from the fact CODECS rarely survive more than
6 months). One path is:
1) a Video CODEC that will convert Analog Video to a fairly uncompressed
digital form. Analog Devices for instance make a range of such devices in
120-160 pin TQFP.
2) An MPEG video CODEC, either a dedicated IC (obsolete in 6 months), an
FPGA implementation (need to buy new IP Core every 6 months) or a DSP
implementation (need to license new software every 6 months). Either way I'd
say you'd be looking at >100pin **FP or *BGA and prob. $5K-10K licensing.

Basically, you'll need a lot of resources for such a project (e.g. 4 layer
prototype boards most likely with BGA packages). The fact that you are
asking on the PIC List for such information suggests to me (no offense) that
the project is a little out of your range.

Tom.
{Original Message removed}

2001\01\30@053341 by Peter Tiang

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Hi,

   To put an end to this confusion, I think I can
   explain this.

   MPEG is a digital compression format, therefore,
   you need a MPEG DECODEr to decompress (or decode)
   the MPEG video stream into raw YUV pixel data.

   This raw YUV pixel data is then converted
   into PAL or NTSC by a video ENCODEr, e.g. Chrontel
   (http://www.chrontel.com).

   For single chip MPEG-1 or MPEG-2 decoder,
   ESS (http://www.esstech.com) and C-Cube (http://www.c-cube.com)
   are the leading vendors. ESS solution is the lowest
   cost solution I know and they sell by the millions
   in China market.

   For single chip MPEG-1/2 encoder, I think C-Cube
   is the leading vendor.

   For single chip MPEG-1/2 codec (ENCODE and DECODE
   simultaneously),look at StreamMachine, http://www.streammachine.com
   This is the chip used in most PVR (personal video
   recorder) popular in the US as TiVo and ReplayTV.
   C-Cube also has a solution.

   If you are interested in MP3 (MPEG1 or MPEG2 layer 3,
   not MPEG3) there's a lot of single-chip DECODErs available.
   e.g. Micronas (http://www.micronas.com), SGS-Thompson (http://www.st.com)

   However, I haven't seen a single-chip MP3 encoder
   available. Perhaps a PICLISTer can enlightent me on this.

   There's new (or rather old) interest in MPEG-4 or DIVX
   which promises to squeeze DVD quality movie onto a normal
   CD-R. It's suppose to be the MP3 equivalent for video.
   But I haven't seen any encoder or decoder in the market.

Cheers,
Peter Tiang
Amquest Sdn Bhd

{Original Message removed}

2001\01\30@081105 by Olin Lathrop

face picon face
> >I want to convert analogue video into MPEG, so it can
> >be displayed on a computer and stored in memory.
>
> Maybe a PC capture card would be the best bet for you.
> IIRC, Averkey & such have cheapish ones that work ok.
> I don't think you'll find a simple-to-implement encoder solution.
> Regards...

Check out the All in Wonder series of graphics cards from ATI.  These can do
video capture to various formats, and I think MPEG is one of them.


*****************************************************************
Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, olinspamspam_OUTembedinc.com, http://www.embedinc.com

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2001\01\30@114832 by Randy Glenn

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Micronas is coming out with an MPEG1/2 Audio CODEC, with built in ADC and
DAC. Part # MAS3587F, I think...

Also, I think that Toshiba has a one-chip MPEG4 solution.

-Randy Glenn

This coming from the guy with a system tray 7 icons wide... by 2 tall...
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{Original Message removed}

2001\01\30@124554 by info

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In message <KILLspamNDBBLGEHGLHAOEKCDCNDGENMDMAA.PICxpertKILLspamspamhome.com>, Randy Glenn
<RemoveMEPICxpertTakeThisOuTspamHOME.COM> writes
>Micronas is coming out with an MPEG1/2 Audio CODEC, with built in ADC and
>DAC. Part # MAS3587F, I think...
>

Has anyone got one, Or even a full data sheet? Do they do an eval board?

Scott

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