[opendtv] Re: MPEG Transport Streams
- From: Tom Barry <trbarry@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 21 Jun 2005 23:49:41 -0400
John Willkie wrote:
> because they conform to the specifications in ISO/IEC 13818-1 (MPEG-2
> systems), which defines the packet size (188 or 204, but really only 188),
> the form of the ts header, the adaptation field control, the payload
> elements, the definition of the elementary streams, the form of the private
> table section, and the form of the MPEG-2 Program Specific Information
> (Program Association Table and Program Map Table instances).
>
> MPEG-4 defines improvements to some aspects of MPEG-2, but doesn't provide
> for a new transport stream format.
>
> John Willkie
>
A few years ago I paid about $135 to download a copy of the
13818-1 MPEG-2 System doc. IIRC the corresponding MPEG-4 doc is
14496-1 MPEG-4 Systems, though I might not have the name quite
right. When I went to purchase that one I found the price had
doubled or tripled, so I don't have it. I may have a pre-approval
copy around somewhere, dunno.
- Tom
> ----- Original Message -----
> From: <dgrimes@xxxxxxxxxxxxxxxxx>
> To: <opendtv@xxxxxxxxxxxxx>
> Sent: Tuesday, June 21, 2005 4:48 PM
> Subject: [opendtv] Re: MPEG Transport Streams
>
>
>
>>"All transport streams in digital broadcasting are MPEG-2."
>>
>>So what makes a transport stream MPEG-2? Are the block size, headers, and
>>timing defined in the MPEG-2 standard while defined differently in the
>>MPEG-4 standard?
>>
>>Dan
>>
>>
>>
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