DGMPGDec 1.5.3 Final - Page 14

squid_80 · 29th January 2008, 13:49

They use it for motion estimation. As far as I'm aware decoding doesn't need that.

Atak_Snajpera · 31st January 2008, 12:14

I have one question.

Why MPEG Layer-2 audio is demuxed to *.mpa extension instead of *.mp2 ?

buzzqw · 31st January 2008, 13:10

@Atak_Snajpera

from vob and ts (mpeg2 video) the audio extension is MPA

BHH

Atak_Snajpera · 31st January 2008, 13:16

Quote:

from vob and ts (mpeg2 video) the audio extension is MPA

aaaaaand.... What is your point?

If audio is detected as MPEG Layer-2 it should have *.mp2 extension.

buzzqw · 31st January 2008, 14:00

look here

audio reported as mpa, extracted as mpa

(if you want i can post the sample vob , 7mb)

BHH

Atak_Snajpera · 31st January 2008, 15:17

MPA L2 = MPEG Layer-2 = *.mp2
Do you understand me know?

buzzqw · 31st January 2008, 15:21

.. i loose a "Why" .. fast read as "How"

BHH

Guest · 31st January 2008, 15:34

Is it a problem for you?

MPA covers all layers.

Atak_Snajpera · 31st January 2008, 15:47

I think *.mp2 extension is more logical instead of mpa. If I have Dolby digital stream then I have ac3 extension. If I have PCM then I have wav and so on.

Guest · 31st January 2008, 16:19

I didn't ask whether you thought it was logical.

If I have MPEG audio then I have *.mpa and so on.

Atak_Snajpera · 31st January 2008, 16:29

Quote:

If I have MPEG audio then I have *.mpa and so on.

If this "too" difficult to change then forget it. It looks like I won't convince you to use correct extension.

Guest · 31st January 2008, 16:38

I asked you a simple question and you refuse to answer. Who is the intransigent one?

http://www.fileinfo.net/extension/mpa

Atak_Snajpera · 31st January 2008, 17:15

Quote:

I asked you a simple question and you refuse to answer

Some apps (h264tsto or xport) cannot detect audio type so demuxed stream has always .mpa extension. I use NicMPASource only if I have .mp2 extension so I'm sure that stream will be recognized otherwise DirectShowSource is used (if .mpa). You may ask then Why not use DirectShowSource for .mpa and .mp2? Because I've noticed that Nic's plugin is more stable. Besides It would be easier for user if he had .mp2 extension so knew immediately that he is dealing with MPEG Layer-2 compression.
All I'm asking to be more precise.

Quote:

http://www.fileinfo.net/extension/mpa

http://www.fileinfo.net/extension/mp2

buzzqw · 31st January 2008, 17:29

@Atak_Snajpera

you can use a Try / Catch avisynth script, if nicaudio fails go to dss
or try first with Nic, check for audio channels, and if not 2/error -> go to dss

BHH

Atak_Snajpera · 31st January 2008, 18:29

Quote:

you can use a Try / Catch avisynth script, if nicaudio fails go to dss
or try first with Nic, check for audio channels, and if not 2/error -> go to dss

It's not very professional solution in my opinion. I will use MediaInfo to rename demuxed mpa to mp2.

Inventive Software · 31st January 2008, 23:30

WTF? How hard is it to rename it to MP2?

Guest · 31st January 2008, 23:42

Quote:

Originally Posted by Atak_Snajpera

Besides It would be easier for user if he had .mp2 extension so knew immediately that he is dealing with MPEG Layer-2 compression. ...
All I'm asking to be more precise.

The layer is already specified in the file name. But I suppose it is not difficult to print an extension of mp1, mp2, or mp3, so I will implement that for you. Thank you for the suggestion.

The Scientist · 1st February 2008, 05:43

Quote:

Originally Posted by neuron2

The layer is already specified in the file name. But I suppose it is not difficult to print an extension of mp1, mp2, or mp3, so I will implement that for you.

oh no, can we have a vote, lol

The Scientist · 7th February 2008, 09:32

Quote:

Originally Posted by neuron2

I suppose it is not difficult to print an extension of mp1, mp2, or mp3, so I will implement that for you.

ermmmm, can we vote on that? lol

Sharktooth · 21st February 2008, 14:28

@neuron2: you may be interested in this: https://forum.doom9.org/showthread.php?t=135055

31st January 2008, 12:14	#262 \| Link
Atak_Snajpera RipBot264 author Join Date: May 2006 Location: Poland Posts: 7,815	I have one question. Why MPEG Layer-2 audio is demuxed to .mpa extension instead of .mp2 ? __________________ Windows 7 Image Updater - SkyLake\KabyLake\CoffeLake\Ryzen Threadripper

31st January 2008, 13:10	#263 \| Link
buzzqw HDConvertToX author Join Date: Nov 2003 Location: Cesena,Italy Posts: 6,552	@Atak_Snajpera from vob and ts (mpeg2 video) the audio extension is MPA BHH __________________ HDConvertToX: your tool for BD backup MultiX264: The quick gui for x264 AutoMen: The Mencoder GUI AutoWebM: supporting WebM/VP8

31st January 2008, 14:00	#265 \| Link
buzzqw HDConvertToX author Join Date: Nov 2003 Location: Cesena,Italy Posts: 6,552	look here audio reported as mpa, extracted as mpa (if you want i can post the sample vob , 7mb) BHH __________________ HDConvertToX: your tool for BD backup MultiX264: The quick gui for x264 AutoMen: The Mencoder GUI AutoWebM: supporting WebM/VP8

31st January 2008, 15:17	#266 \| Link
Atak_Snajpera RipBot264 author Join Date: May 2006 Location: Poland Posts: 7,815	MPA L2 = MPEG Layer-2 = .mp2 Do you understand me know? __________________ Windows 7 Image Updater* - SkyLake\KabyLake\CoffeLake\Ryzen Threadripper

31st January 2008, 15:21	#267 \| Link
buzzqw HDConvertToX author Join Date: Nov 2003 Location: Cesena,Italy Posts: 6,552	.. i loose a "Why" .. fast read as "How" BHH __________________ HDConvertToX: your tool for BD backup MultiX264: The quick gui for x264 AutoMen: The Mencoder GUI AutoWebM: supporting WebM/VP8

29th January 2008, 13:49	#261 \| Link
squid_80 Registered User Join Date: Dec 2004 Location: Melbourne, AU Posts: 1,963	They use it for motion estimation. As far as I'm aware decoding doesn't need that.

31st January 2008, 15:34	#268 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	Is it a problem for you? MPA covers all layers.

31st January 2008, 15:47	#269 \| Link
Atak_Snajpera RipBot264 author Join Date: May 2006 Location: Poland Posts: 7,815	I think .mp2 extension is more logical instead of mpa. If I have Dolby digital stream then I have ac3 extension. If I have PCM then I have wav and so on. __________________ Windows 7 Image Updater* - SkyLake\KabyLake\CoffeLake\Ryzen Threadripper

31st January 2008, 16:19	#270 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	I didn't ask whether you thought it was logical. If I have MPEG audio then I have *.mpa and so on.

31st January 2008, 16:38	#272 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	I asked you a simple question and you refuse to answer. Who is the intransigent one? http://www.fileinfo.net/extension/mpa Last edited by Guest; 31st January 2008 at 16:40.

31st January 2008, 17:29	#274 \| Link
buzzqw HDConvertToX author Join Date: Nov 2003 Location: Cesena,Italy Posts: 6,552	@Atak_Snajpera you can use a Try / Catch avisynth script, if nicaudio fails go to dss or try first with Nic, check for audio channels, and if not 2/error -> go to dss BHH __________________ HDConvertToX: your tool for BD backup MultiX264: The quick gui for x264 AutoMen: The Mencoder GUI AutoWebM: supporting WebM/VP8

31st January 2008, 23:30	#276 \| Link
Inventive Software Turkey Machine Join Date: Jan 2005 Location: Lowestoft, UK (but visit lots of places with bribes [beer]) Posts: 1,953	WTF? How hard is it to rename it to MP2? __________________ On Discworld it is clearly recognized that million-to-one chances happen 9 times out of 10. If the hero did not overcome huge odds, what would be the point? Terry Pratchett - The Science Of Discworld

21st February 2008, 14:28	#280 \| Link
Sharktooth Mr. Sandman Join Date: Sep 2003 Location: Haddonfield, IL Posts: 11,768	@neuron2: you may be interested in this: https://forum.doom9.org/showthread.php?t=135055 __________________ MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!!