This increase in use is thanks to Apple’s iPhone smartphones, which by default record and save videos in the HEVC format. Why is this important? The HEVC format is becoming more and more popular nowadays. While Windows 10 comes with many different and essential codecs by default, some are missing from the system’s starter pack. For example, on a device without codecs, you'd be unable to record through your webcam or play media you downloaded or received. Without codecs, you're unable to play videos on your device, which also limits you from editing or filming in specific formats yourself. What is the HEVC codec and why you need itĬodecs are essential for streaming media. The decoder skips bytes until it finds a valid sequence parameter set (SPS) and picture parameter set (PPS) in the byte stream.In this article, we'll be going over how you can acquire the HEVC codec without having to spend any money. Input data must conform to Annex B of ITU-T H.265 | ISO/IEC 23008-2. The decoder supports DX11 and DX12 DXVA, but not DXVA version 2 or DXVA version 1. Main, Main Still Picture, and Main10 profilesĤ096 × 2304 pixels The maximum guaranteed resolution for DXVA acceleration is 1920 × 1088 pixels at higher resolutions, decoding is done with DXVA, if it is supported by the underlying hardware, otherwise, decoding is done with software. The decoder supports the following formats: Requirement
The H.265 decoder implements the IMFTransform::GetAttributes method. The decoder supports the following output subtypes:įor more information about these subtypes, see Video Subtype GUIDs. For example if the content is going to be 10bit, input media type should specify the profile as Main10. The decoder can detect in-flight output format changes based on the elementary stream syntax (aspect ratio, dimension, interlace flags, colorimetry information) and trigger corresponding output media type changes.įor input media type, the decoder expects the source to set the correct Profile. The input media types cannot change dynamically between two types. The media subtype MFVideoFormat_ HEVC_ES is to indicate the media samples carry elementary H.265 bitstream, where each sample may contain a partial picture, multiple pictures, some pictures plus a partial picture. The first media subtype, MFVideoFormat_HEVC, indicates that the media samples carry H.265 bitstream with start codes, and the stream has interleaved SPS/PPS. MFVideoFormat_HEVC or MFVideoFormat_HEVC_ES The input type must contain at least the following two attributes: Attribute To create an instance of the decoder call the MFTEnum or MFTEnumEx function. The H.265 video decoder exposes the following interfaces.
The Media Foundation H.265 video decoder is a Media Foundation Transform that supports decoding H.265/HEVC content in Annex B format and can be used in playback of mp4 and m2ts files.