Tag: mp4

Reference Signal Source: RGB32/ARGB32 Subtypes, Media Foundation Media Source for Video

An update for Reference signal source for DirectShow DLLs: the source is doing more accurately RGB subtypes and allows specification whether you want MEDIASUBSTYPE_RGB32 or MEDIASUBSTYPE_ARGB32 additionally the DLL implements Microsoft Media Foundation Media Source for the video stream A more detailed description follows. RGB32 and ARGB32 are very close and share the same byte…

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DirectShowFileMediaSamples Update: Command Line Mode

It appears that the tool was never mentioned before (just mentioned in general software list). The application takes a media file on the input and applies respective DirectShow demultiplexer to list individual media samples. for MP4 files the application attempts to use GDCL MPEG-4 Demultiplexer first it is possible to filter a specific track/stream ability…

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Media Foundation MPEG-4 Property Handler might report incorrect Video Frame Rate

To follow up previous post with Media Foundation bug, here goes another one related to property handler for MPEG-4 files (.MP4) and specific property PKEY_Video_FrameRate which reports frame rate for given media file. This is the object responsible for filling columns in explorer, or otherwise visually the bug might look like this: The values of the properties are…

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