LEAD H264 Decoder (3.0)

The LEAD H264 Decoder is a DirectShow® decoder that can decompress video compressed by any H264 codec. Note that there are two DirectShow® encoders and only one DirectShow ® decoder because the DirectShow® decoder can decode data encoded by any codec. The DirectShow® decoder is preferred over the DirectX Media Object (DMO) decoder when playing H264 video from AVI, Ogg or any non-WMV format in both Media Player and other DirectShow-based players.

The decoder can use Intel Quick Sync Video hardware acceleration for compression once the libmfxsw32/64.dll is installed properly. For more information, refer to How to Enable High Profiles and Hardware Compression in the LEAD H.264 Encoder.

The decoder can use NVIDIA CUDA hardware acceleration on computers with NVIDIA graphics cards with CUDA capabilities. You do not need to install anything; hardware acceleration will be used automatically if possible. For more information about the supported CUDA technology, refer to Using H264 and H265 Encoders on NVIDIA GPUs. For more information on which NVIDIA hardware supports H264, refer to CUDA Hardware Support.

The DirectShow® decoder is capable of playing H264 video from WMV files in players built with LEADTOOLS or DirectShow®. Windows Media Player will NOT use a DirectShow® decoder to play WMV files. It will insist on using DMO or VFW decoders to play WMV files. Media Player will, however, use DirectShow® decoders to play AVI or Ogg files.

Technical details for the filter are provided in the following table:

Filter Interface(s) ILMH264Decoder
Interface ID IID_ILMH264Decoder
Input Media Types Type:
MEDIATYPE_Video Subtypes:
MEDIASUBTYPE_L264
MEDIASUBTYPE_LX64
MEDIASUBTYPE_h264
MEDIASUBTYPE_H264
ISOMEDIATYPE_avc1
MEDIASUBTYPE_avc1
MEDIASUBTYPE_AVC1
Output Media Types Type:
MEDIATYPE_Video Subtype:
MEDIASUBTYPE_RGB32
MEDIASUBTYPE_RGB24
MEDIASUBTYPE_YUY2
MEDIASUBTYPE_UYVY
MEDIASUBTYPE_YV12
MEDIASUBTYPE_RGB565
MEDIASUBTYPE_RGB555
Filter CLSID CLSID_LMH264Decoder
Property Page(s) CLSID CLSID_LMH264DecoderAbout
Filter category CLSID_LegacyAmFilterCategory
Executable LDECH2643.dll, DSKernel2.dll
Header ILDecH264.h
Profiles See LEAD H264 Codecs Profile Support

Platforms

Win32, x64

This filter is included as part of the following modules:

LEAD H.264 Video Decoder Module

CUDA Hardware Support

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