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Author Topic: mpg = Video, mpeg = Audio!  (Read 3008 times)

David_1cog

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mpg = Video, mpeg = Audio!
« on: January 16, 2006, 05:34:50 am »

As per subject, mpg files display in 'Video' view, but mpeg extension displays in 'Audio' view.  MC11.1.99.

Just me or a bug?
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David_1cog

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Re: mpg = Video, mpeg = Audio!
« Reply #1 on: January 19, 2006, 12:22:28 pm »

bump
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JimH

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Re: mpg = Video, mpeg = Audio!
« Reply #2 on: January 19, 2006, 12:26:09 pm »

I don't know why you see what you do, but you can change the Media Type in MC's properties.
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David_1cog

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Re: mpg = Video, mpeg = Audio!
« Reply #3 on: January 19, 2006, 12:41:33 pm »

Can't work out what you mean.  "MC's properties"?  I see 'Media Type' when editing View Scheme, but that just allows selection of 'Video', 'Audio', 'Data', etc. - no fine-grained control of video types / extensions.
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David_1cog

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Re: mpg = Video, mpeg = Audio!
« Reply #4 on: January 27, 2006, 12:53:07 pm »

bump.  11.1.106.

Anyone else seeing '.mpeg' in 'Audio'?
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Alex B

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Re: mpg = Video, mpeg = Audio!
« Reply #5 on: January 27, 2006, 01:49:33 pm »

MPEG can be audio as well. You could change the file extension to .mpg and reimport

or just change the "Media Type" field afterwards. You can find it here:

Action Window > File Properties > Tag Info > Columns to show: All fields (use the tiny button on the top left corner) > Media Type

or make the field visible in "Customize Current View".
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risingdamp

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Re: mpg = Video, mpeg = Audio!
« Reply #6 on: January 27, 2006, 03:53:38 pm »

I think what he's trying to say is that MPEG is typically video so why does MC default this to audio?  I change it back afterwards but sometimes I forget.
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JLee

Alex B

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Re: mpg = Video, mpeg = Audio!
« Reply #7 on: January 27, 2006, 04:13:54 pm »

It is good to have an alternative for audio files. The three letter extension is the usual Windows standard. I guess all Windows video programs use .mpg by default. MPEG audio format is not so common, but if you happen to have those files you can name them as .mpeg.
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Alex B

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Re: mpg = Video, mpeg = Audio!
« Reply #8 on: January 27, 2006, 05:34:59 pm »

MC has currently these MPEG file associations (besides MP3 and the MP4 variants):
mpa, mpga, mp2, mpeg, mpg, m1v, mpv, mpe, m2v

I have Steinberg's Wavelab 5 (a pro audio editor). It has an MPEG-1 Layer 2 encoder.
The offered file extension options are: mp2, mpa, mpg, mus

I remember now that I have previously changed the Media Type of my MP2 audio files because MC imported them as video. Afterall, I think the best system would be this:

mpg, mpeg, m1v, m2v, mpe, mpv, m2p, mpv2, mp2v, mpeg2  => Video

mp2, mpa, mpga, mp1, mp2a  => Audio

mus is also used by the well-known Finale notation software and I have never seen a .mus MPEG audio file so I guess it is not needed.


EDIT: Added m2p, it is used by Canopus for MPEG2 videos.

EDIT2: Added more extensions. The oldest MPEG-1 layer 1 audio format uses mp1. Sometimes the mp2a (MPEG-1 layer 2 audio), mpv2, mp2v and mpeg2 (MPEG-2 video) extensions are used too.
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David_1cog

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Re: mpg = Video, mpeg = Audio!
« Reply #9 on: January 28, 2006, 01:51:47 pm »

OK, it turns out the MPEG / MPG extension was a red herring.  When I renamed the '.mpeg' to '.mpg' it still appeared in the 'Audio' listing.  I solved the problem by selecting the offending video file -> right click in TAG INFO -> Columns To Show -> Show All Fields -> File Info -> Media Type - it was set to 'Audio', I changed to 'Video'.  Problem solved.
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Alex B

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Re: mpg = Video, mpeg = Audio!
« Reply #10 on: February 01, 2006, 07:54:42 am »

It seems that MC can tag and use MPEG1 layer 2 files perfectly fine with its internal decoder plug-in if the extension is changed to .mp3.

I think it would good to handle .mp2 audio files similarly without the need of changing the extension.
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