Re: mime-type confusion

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 ]
>> [ homepage ]
>Regards, -- Tristan Savatier (President, MpegTV LLC)
>MpegTV website:
>MPEG.ORG website:

Received on Sunday, 20 April 1997 17:56:38 UTC