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Author Topic: Directshow and Audio  (Read 1793 times)

richard.e.morton

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Directshow and Audio
« on: October 16, 2007, 04:40:20 pm »

Hi,

I am struggling with getting m4a files transcoded to mp3 for playback on my phone (the phone plays m4a but doesn't support tags or coverart). I can't get MC to transcode to mp3, it essentially says it can't



oggs transcode fine. I notice that the Player->Playback Options -> Playback Options -> Video -> Directshow Playback settings... is listed under "video" in the tree I just described, however I have seen some posts indicating that this also affects audio only playback, is this true?

If it is true I assume it also affects transcoding?

I have CCCP, Apple Quicktime, and Xvid installed (in that order), and although playback of m4a files is fine within MC, as I said transcoding fails.

ideas?

Thanks

Richard
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richard.e.morton

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Re: Directshow and Audio
« Reply #1 on: October 16, 2007, 04:44:48 pm »

oh, the m4a transcode error I get is...

Failed to play .... filepath ....
You may not have installed the directshow filters for decoding the type of file you are trying to play.
Please install appropriate filters and try again.

I should have said I have searched this forum, without luck.

Also if splitters are there to split audio and video components of a file to appropriate codecs, are they required for audio only file?

Thanks

Richard
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Yaobing

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Re: Directshow and Audio
« Reply #2 on: October 16, 2007, 08:09:56 pm »

There had been a lot of discussions on m4a, probably mostly on MC11 board.

As you already discovered, the option is under "Video", but it covers all DirectShow playback, including m4a. The default setting is to try playing m4a in DirectShow. So you must make sure you have DirectShow filters that can handle them. Installing CCCP is a way to go.
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jmone

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Re: Directshow and Audio
« Reply #3 on: October 17, 2007, 02:49:33 pm »

Hi Yaobing, how do you see what filters have been loaded (eg with video you can right click on the image and MC will tell you...)?
Thanks
nathan
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Yaobing

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Re: Directshow and Audio
« Reply #4 on: October 17, 2007, 08:45:23 pm »

For audio, you can't except using log file.
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Alex B

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Re: Directshow and Audio
« Reply #5 on: October 18, 2007, 01:34:45 am »

For audio, you can't except using log file.

You should add this. It could be a new menu item in the playback menu. It would open a filter list and make possible to access the filter specific configuration panels.
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jmone

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Re: Directshow and Audio
« Reply #6 on: October 18, 2007, 02:33:39 am »

Could it not just work the same way - eg just add the menu option to the right click on the playing now window....
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Yaobing

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Re: Directshow and Audio
« Reply #7 on: October 18, 2007, 08:27:55 am »

I have thought about doing it long ago. My other priorities prevented me from giving it more thoughts as only a few audio types are played in DirectShow. Technically there is the question of where to put the menu. Unlike video, where the Display Window is the natural place, for audio I can think of the display window, or the main application menu, neither seem perfect.
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glynor

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Re: Directshow and Audio
« Reply #8 on: October 18, 2007, 10:26:49 am »

I'd just do the display window, and keep it consistent with Video.  I too would occasionally use this, particularly when diagnosing M4A playback issues.
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