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 LEAD H264 Encoder 4.0.
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:
|Input Media Types||Type:
|Output Media Types||Type:
|Property Page(s) CLSID||CLSID_LMH264DecoderAbout|
|Profiles||See LEAD H264 Codecs Profile Support|
This filter is included as part of the following modules:
Medical Web Viewer .NET
.NET, Java, Android, and iOS/macOS Assemblies
C API/C++ Class Libraries