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POIGraphBuilder::RenderFile() failing with VFW_E_BAD_KEY - 0x800403f2
primarykey
Id
1963241
data
AcceptedAnswerId
1963680
AnswerCount
1
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2009-12-26T11:52:03.523
FavoriteCount
1
LastActivityDate
2009-12-26T16:36:48.527
LastEditDate
2017-05-23T12:30:42.570
LastEditorUserId
-1
OwnerUserId
168225
ParentId
0
PostTypeId
1
Score
1
ViewCount
1252
LastEditorDisplayName
text
Body
Continuing investigation on a <a href="https://stackoverflow.com/questions/1935964/basic-playback-with-programmatically-created-windows-media-player">embedded WindowsMediaPlayer problem</a>, i am trying to do simple file playback via a DirectShow in-process server: <pre><code>::CoInitializeEx(0, COINIT_MULTITHREADED); CComPtr<IGraphBuilder> spGraph; spGraph.CoCreateInstance(CLSID_FilterGraph, 0, CLSCTX_INPROC_SERVER); CComQIPtr<IMediaControl> spMediaControl(spGraph); // ... later: spGraph->RenderFile(L"c:\\foo.wav", 0); // fails with VFW_E_BAD_KEY spMediaControl->Run(); </code></pre> Interestingly, this runs fine on both systems i tested on (Windows XP 32 & x64) when doing it in a stand-alone application. It however fails in my real use-case, a NPAPI based browser plugin - i.e. a DLL loaded into Firefox/Chrome/Opera. Does anyone have an idea what could be going wrong here? Or ideas on what else to try? Update: also asked on the <a href="http://social.msdn.microsoft.com/Forums/en/windowsdirectshowdevelopment/thread/8eb3c3b4-f0d1-4aee-9e58-70bd892d879c" rel="nofollow noreferrer">Microsoft forums</a>. Update2: <code>IGraphBuilder::AddSourceFilter(path,path,&base)</code> already fails with the following registry calls (as seen in process monitor): <pre> "RegOpenKey","HKCU\Software\Classes\c","NAME NOT FOUND","Desired Access: Query Value, Maximum Allowed" "RegOpenKey","HKCU\Software\Classes\Media Type\Extensions\.wav","NAME NOT FOUND","Desired Access: Read" "RegOpenKey","HKCU\Software\Classes\Media Type","NAME NOT FOUND","Desired Access: Read" </pre>
Tags
<c++><windows><com><directshow>
Title
IGraphBuilder::RenderFile() failing with VFW_E_BAD_KEY - 0x800403f2
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USCommunity
UserOwnerUserId
1. USGeorg Fritzsche
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PostLinksPostIdRelatedPostId
1. PL
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 LinkTypeLinkTypeId
 LTLinked
PostLinksRelatedPostIdPostId
1. PL
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 LinkTypeLinkTypeId
 LTLinked
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 POIGraphBuilder::RenderFile() failing with VFW_E_BAD_KEY - 0x800403f2
 UserUserId
 USarul
 VoteTypeVoteTypeId
 VTFavorite
CommentsPostId
1. This table or related slice is empty.

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