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Re: mime-type confusion

From: George T. Haber <george@compcore.com>
Date: Sun, 20 Apr 1997 14:56:44 -0700
Message-Id: <>
To: Tristan Savatier <tristan@bok.net>, markus.mehlau@muich.netsurf.de
Cc: www-talk@w3.org, www-html@w3.org, video@mpeg.org, mpeg_sys@eikona.eng.monash.edu.au
OK Guys

 .vob - For DVD VOB files (MPEG-2)
 .ac3 - For AC-3 Audio only

George T. Haber ( Tristan's friend ;)

At 02:32 PM 4/20/97 -0700, Tristan Savatier wrote:
>Markus Mehlau wrote:
>> is there anybody in the mpeg-community that takes care about the
>> file-extensions?
>This is a very good question indeed! I hope you don't mind
>if I copy my comments on various relevant news-groups and
>mailing lists.
>Defining or standardizing MPEG file extensions is not in the
>mandate of the ISO/IEC MPEG group.
>In fact this is really a general problem:
>It seems that there isn't any organization or authority
>mandated to standardizing the use of file extensions
>on the internet, although file extensions are often
>used by web servers and web browsers to identify file
>formats (cf. mailcap and mime.types).
>So, what we see on the internet is de-facto adoption of some
>extensions, which is often a source of confusion, I agree.
>The most widely MPEG-related extensions that
>I have seen for mpeg so far are:
>.mpg - MPEG-1 video or systems (video+audio)
>.dat - MPEG-1 systems on Video-CDs
>.mp1 - MPEG-1 audio layer 1 (rare)
>.mp2 - MPEG-1 audio layer 2
>.mp3 - MPEG-1 audio layer 3 (often incorrectly called mpeg3!)
>.m2v - MPEG-2 video
>.m2s - MPEG-2 systems (video+audio)
>Maybe it would have been nice if MPEG could have at least
>"recommended" the use of particular file extensions for files
>containing various types of MPEG data.  I hope that the
>MPEG committee will keep that in mind when finalizing the MPEG-4
>> markus mehlau [ multimediaDEsign ]
>> [ email ] mailto:markus.mehlau@munich.netsurf.de
>> [ homepage ] http://homepages.munich.netsurf.de/Markus.Mehlau
>Regards, -- Tristan Savatier (President, MpegTV LLC)
>MpegTV website:   http://www.mpegtv.com
>MPEG.ORG website: http://www.mpeg.org
Received on Sunday, 20 April 1997 17:56:38 UTC

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