// Oprogramowanie Roman Ryltsov
Some recent update in Media Foundation platform introduced a new bug related to fragmented MP4 files and H.264 video. The bug shows up consistently with file versions: mfplat.dll – 10.0.14393.351 (rs1_release_inmarket.161014-1755)Â Â Â 15-Oct-16 05:48 mfmp4srcsnk.dll – 10.0.14393.351 (rs1_release_inmarket.161014-1755)Â Â Â 15-Oct-16 05:45 The nature of the problem is that MPEG-4 File Source is incorrectly time stamping the data:…
The application takes advantage of three powerful Windows APIs at a time: Desktop Duplication API Media Foundation Hardware H.264 Video Encoders MediaFoundationDesktopRecorder initializes a desktop duplication session and sends obtained desktop images to H.264 video encoder producing a standard MP4 recording. Optionally, it can add an audio track capturing data from one of the standard…
Two H.264 MP4 files, close one to another. The files are playable, a sort of: Windows desktop players (except Media Foundation based), QuickTime, Android and iOS devices play them. The files are not flawless but make sense, hence the glitches. There is a problem with the second file, which is rejected by Twitter “Your media…
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…
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…
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…