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laura vaal 27th December 2008 11:14 PM

Error: MP4filelib.dll was not found.
Dear friends:
I use Bsplayer pro 2.34.

One day, Bsplayer started to show this mesage:
"error al inciar la aplicación. No se encontró MP4 filelib.dll."

The translation could be:
"Error at the beggining of the aplication. MP4filelib.dll was Not Found."

I have to push enter and then all is ok: Bsplayer play the video very well.

This happens just when I try to open an MP4 file made it in pinnacle ultimate 12.
However, I can open every MP4 in Quick time.

I love Bsplayer and I would like to play my MP4 files with it.

Could you please help me?

I am a novice girl and I do not understand the specialist terminology.
Thanks in advance.


laura vaal 27th December 2008 11:24 PM

I forgot to tell you that I have K-Lite Codec Pack 442 full.

adicoto 28th December 2008 02:27 AM

The translation "error starting the aplication, MP4FileLib.dll was not found" it's more accurate. Seems your software ( in some way, part of Mpegable DS software) interfere with the standard MP4 decoder. When you open the file (MP4 or 3GP) can you tell us wich filters are used ?
On some forum it was suggested to dowload this file into windows/system32 folder

QuickTime does not use directshow filters but it's own ones.

laura vaal 28th December 2008 10:33 AM

Hi adicoto.
Thank you for answering to me.

I can see two filters (in the task bar) named ffdshow when I open the MP4.

You wrote:
"On some forum it was suggested to dowload this file into windows/system32 folder."

What file are you talking about my friend?


adicoto 28th December 2008 11:29 AM

MP4FileLib.dll is the file I am talking. It's part of the software named Mpegable DS and probably it's the filter that it's registered to decode MP4 streams. This error it's pretty common and in some cases was solved by downloading / copying this file into windows/system32 folder.
To realy find out witch filters are used, open the file, rightclick-> options -> filters ->advanced and post here the files named to be used.

laura vaal 28th December 2008 01:19 PM

Is this the information you need?

ffdshow Video Decoder
Location: C:\Archivos de programa\K-Lite Codec Pack\ffdshow\, Size: 2630656 bytes, Version

FileDescription: DirectShow and VFW video and audio decoding/encoding/processing filter
InternalName: ffdshow
LegalCopyright: Copyright © 2002-2008
LegalTradeMarks: GNU GPL
ProductName: ffdshow

MP4 Splitter
Location: C:\Archivos de programa\K-Lite Codec Pack\Filters\, Size: 516096 bytes, Version

CompanyName: Gabest
FileDescription: MP4 Splitter
FileVersion: 1, 0, 0, 4
InternalName: MP4 Splitter
LegalCopyright: Copyright (C) 2005-2008 Gabest
LegalTradeMarks: Copyright (C) 2005-2008 Gabest
ProductName: MP4 Splitter
ProductVersion: 1, 0, 0, 4


adicoto 28th December 2008 01:42 PM

As I supposed, MP4FileLib.dll it's not used, just registered. Probably, at this moment, the best way is to disable this filter. In BSPlayer's filter management you can disable it (rightclick -> options -> filter management )

laura vaal 28th December 2008 05:09 PM

Thanks, adicoto.
I really apreciate your time but...
I dont have the option filter management.
Better still: I can not see some filter named fiellib.dll.

Could you please give me another option?

laura vaal 28th December 2008 05:45 PM

I went to C:\Archivos de programa\Pinnacle\Studio 12\Programs and I saw the .dll MP4filelib.dll.
Then, I took it and copy it to C:\WINDOWS\system32

Bsplayer is not showing any message any more.

Thank you very much my friend.

Greetings from México.

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