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Codecs

LEADTOOLS Multimedia SDK products are specifically designed for the development of audio/video applications across a wide variety of industries including defense, broadcast and security. The SDK offers a full range of technologies to developers and turns normally complex DirectShow and Media Foundation projects into simple tasks.  Easily integrate core multimedia functionality such as capture, conversion, streaming and playback into applications with optional processing filters. These filters can be applied at any point of the workflow.

LEADTOOLS Multimedia and available add-ons offer H.265, H.264, H.263, MPEG-4, MPEG-2, AAC, VP8 and AC3 codecs, and supports any available DirectShow or Media Foundation audio/video codec. The toolkit also contains and utilizes multiplexers and/or demultiplexers for formats including MP4, AVI, MP3, WMV, MXF, MKV, 3GP, OGG, FLV (YouTube and HD Flash), ISO, MPEG-2 and MPEG-2 transport stream with KLV. The SDK provides MPEG-2 Transport, IIS, DMO, RTSP and network filters to stream data encoded with any codec.  Pause, rewind and fast-forward live capture and UDP or TCP/IP streams with LEADTOOLS DVR technology. Create and burn DVDs with menus, titles and chapters.

All of the following codecs are DirectShow or Media Foundation codecs, unless specified otherwise. DirectShow codecs (encoders and decoders) register into Windows' collection of multimedia drivers and integrate with any application using DirectShow. DirectShow decoders register under the DirectShow Filters category, while the DirectShow encoders register under the DirectShow Filters and Video or Audio Compressors category.

DMO Encoders register in the Video Compressors category and are designed to be used with Microsoft's Windows Media Encoder for streaming video in a Windows Media (WMV or WMA) container. While they can be used as DirectShow encoders, it is recommended to use the DirectShow encoders since their DirectShow counterparts work better in DirectShow.

DMO Decoders register in the DirectShow Filters category and are designed to work in Microsoft's Media Player for playing Windows Media (WMV or WMA) streams. The DirectShow decoder counterparts are more suitable for use in other DirectShow applications.

Media Foundation components correspond to some DirectShow codecs. They are designed to work with the newer forms of digital media.

Video Codecs

Name Comments DirectShow Codec Media Foundation
Codec
LEAD MCMP/MJPEG Codec The LEAD MCMP/MJPEG codec offers the power to compress TV quality LCODCCMP2.DLL
video at 30 frames per second in real-time. Additionally, because the codec DSKernel2.DLL
includes MJPEG and MCMP, the codec adds the flexibility of using standard
or proprietary encoding. The LEAD MCMP/MJPEG codec integrates with
any application using DirectShow or Video for Windows.
LEAD MCMW Codec The LEAD MCMW codec uses proprietary wavelet compression to compress LCODCCMW3.DLL
images hundreds of times smaller than uncompressed images without LCMW3.DLL
producing compression artifacts that can be found in MJPEG compression. DSKernel2.DLL
Wavelet compression translates to higher quality video with smaller
file sizes.
LEAD JPEG2000 Video Codec The LEAD JPEG2000 Video codec uses standard JPEG2000 wavelet LCODCJ2K2.DLL
compression. This codec is particularly useful when high compression and DSKernel2.DLL
interoperability are necessary. JPEG2000 provides high compression with
image quality superior to all existing standard encoding techniques. This
high compression and quality performance is due to the adaptation of
wavelet transforms.
LEAD H263 Codec The LEAD H263 codec is a high quality lossy interframe codec with a quality LCODC26D2.DLL
and compression ratio comparable with MPEG-4. It can be used for LCODC26X2.DLL
video-conferencing or for compressing large files. The LEAD H263 codec is DSKernel2.DLL
suitable for videos captured from cameras as well as video captured
from screen.
LEAD H263 Decoder The LEAD H263 Decoder is used for decoding H.263 and Sorenson video. LMFCodc26d.DLL
H.263 video compression is commonly used in standard videoconferencing DSKERNEL2.DLL
applications. Sorenson video compression is commonly used in Flash
FLV files.
LEAD H264 Video Codec The LEAD H264 Video Codec is a state-of-the-art codec for compressing and LDECH2643.DLL
decompressing video data using H.264/AVC standard. H.264 is an advanced LENCH2643.DLL
video standard developed jointly by ITU and MPEG. H.264/AVC provides an DSKernel2.DLL
efficient algorithm for compressing video. It is commonly used in Blu-Ray
disks, HDTV, MP4 files and many web HD video formats (like Flash HD).
LEAD H264 Encoder (DMO) The LEAD H264 Encoder (DMO) is a DirectX Media Object (DMO) filter for LENCH264DMO2.DLL
compressing video data using the H.264/AVC standard. DSKernel2.DLL
LEAD H264 Encoder Advanced (DMO) The LEAD H264 Encoder Advanced (DMO) is a DirectX Media Object (DMO) LENCH264DMO2.DLL
filter for compressing video data using the H.264/AVC standard. DSKernel2.DLL
In addition to the capabilities supported by the standard LEAD H264 Encoder
Filter (DMO), the LEAD H264 Encoder Filter Advanced (DMO) supports
the following features:
Fixed bit rate compression. The standard version supports only
variable bit rate compression.
The ability to use smaller blocks in motion estimation. The standard can
use only 16 X 16 blocks. The advanced can use 16 X 16, 16 X 8, 8 X 16, 8 X 8, ...
4 X 4 blocks. These extra types of blocks will increase compression,
allowing the advanced to compress more than the standard.
The capability to use different compression rates at different time
periods throughout the video. This is implemented by using a time
quality factor file. This feature makes it possible to optimize compression
for the best performance.
LEAD H264 Transcoder The LEAD H264 Transcoder is a DirectShow filter. It is used to transcode LTranscoderH264.DLL
h.264 video stream between the byte stream format (used in mpeg2 files) DSKernel2.DLL
and the NAL unit stream format (used in ISO/MP4 files). The LEAD H264
Transcoder changes the h.264 packets without re-compression. Conversion
is fast and the quality of the original stream is preserved. The LEAD
Multimedia toolkit automatically inserts the filter between demultiplexer
and multiplexer whenever necessary.
LEAD H264 Decoder The LEAD H264 Decoder is used for decoding H.264 video. H.264 video LMFDecH264.DLL
compression (also known as MPEG-4 Part 10) is commonly used in MP4 DSKERNEL2.DLL
and Flash HD files.
LEAD H265 Video Encoder The LEAD H265 Video Encoder is a state-of-the-art encoder for compressing LEncH265.DLL
video data using H.265/HEVC standard. H265 is the latest and most advanced LEncH265Krn.DLL
video standard developed jointly by ITU and MPEG. H.265/HEVC provides a libmfxsw32.DLL
far more efficient algorithm for compressing video than any other DSKernel2.DLL
compression method available. It typically outperforms all existing
standards, being roughly twice as efficient as H264.
LEAD H265 Video Decoder The LEAD H265 Video Decoder is used for decompressing H265/HEVC LDecH265.DLL
video data. LDecH265Krn.DLL
libmfxsw32.DLL
DSKernel2.DLL
LEAD H265 Transcoder The LEAD H265 Transcoder is a DirectShow filter. It is used to transcode LTranscoderH265.DLL
H265/HEVC video between the byte stream format (used in mpeg2 files) and DSKernel2.DLL
the NAL unit stream format (used in ISO/MP4 files). The LEAD H265
Transcoder changes the h.265 packets without re-compression. Conversion is
fast and the quality of the original stream is preserved. The LEAD Multimedia
toolkit automatically inserts the filter between demultiplexer and
multiplexer whenever necessary.
LEAD MPEG-2 Video Decoder The LEAD MPEG-2 Video Decoder is used for decompressing MPEG-2 LDecMpg22.dll LDecMpg2MFT.DLL
video data. DSKernel2.DLL DSKERNEL2.DLL
LEAD MPEG-2 Video Encoder The LEAD MPEG-2 Video Encoder is used for compressing Video data using LENCMPG2.DLL
the MPEG-2 standard (ISO/IEC 13818-2) or MPEG-1 standard (ISO 11172-2). DSKernel2.DLL
MPEG-1 is the older standard and achieves higher compression than MPEG-2
(but at lower quality). MPEG-1 compression is used in VCD (video on CD).
MPEG-2 is the newer standard and has lower compression than MPEG-1 but
the quality is much better than MPEG-1. MPEG-2 is a high quality video
compression algorithm and is best suited for applications with higher bit
rates or high-bandwidth usage. The most common applications include
DVD-Videos, SVCD and digital TVs. The compressed video data can be stored
inside MPEG, AVI, or Ogg files with the option of saving the file with or
without the audio data.
LEAD MPEG-4 Decoder The LEAD MPEG-4 Decoder is used for decompressing video data using the LDecMPG4.DLL LMFDecMpg4.DLL
MPEG-4 standard (ISO/IEC 14496-2). MPEG-4 is suitable for a wide range of LDecMPG4Krn.DLL DSKERNEL2.DLL
bandwidths from low bandwidth to broadband. In addition to MP4 files, DSKernel2.DLL
MPEG4 compressed video data can be stored inside AVI, MPEG-2
(Program/Transport) or OGG files with the option of saving the file with or
without the audio data.
LEAD MPEG-4 Encoder The LEAD MPEG-4 Encoder compresses video data using the MPEG-4 standard LEncMPG4.DLL LMFEncMPG4.DLL
(ISO/IEC 14496-2). MPEG-4 is suitable for a wide range of bandwidths from low LEncMPG4Krn.DLL DSKERNEL2.DLL
bandwidth to broadband.  In addition to MP4 files, MPEG4 compressed video DSKernel2.DLL
data can be stored inside AVI, MPEG-2 (Program/Transport) or OGG files with
the option of saving the file with or without the audio data. The LEAD
MPEG-4 Video Encoder is easily configurable through both a programming
interface and a user interface and provides the ability to deliver a video that
is most suitable for the intended application.
LEAD RLE Decoder The LEAD RLE Decoder is a DirectShow filter for decompressing video LDecRle.DLL
QuickTime or MP4 files that use the RLE compression. DSKernel2.DLL
LEAD Screen Capture Video Codec The LEAD Screen Capture Video Codec is a multimedia LCODCSCR.DLL
compressor/decompressor which registers into the Windows collection DSKernel2.DLL
of multimedia drivers (under the DirectShow Video Compressors category)
and integrates with any application using DirectShow.
Existing video software, such as Windows Media Player and Ulead Media
Studio, can utilize this codec to play, create, and edit industry standard
LEAD's proprietary LSCR files. This codec is designed and most suited
for screen-captured streams, best for presentations and applications
tutoring. LSCR delivers much smaller file sizes yet uses a lossless
compression technique.
LEAD VP8 Decoder The LEAD VP8 Decoder is used for decompressing VP8 video. The VP8 video LDecVP8.DLL
compression is a high quality open standard comparable to H.264. DSKernel2.DLL
LEAD VP8 Encoder The LEAD VP8 Encoder is used for compressing VP8 video. The VP8 video LEncVP8.DLL
compression is a high quality open standard comparable to H.264. DSKernel2.DLL
LEAD Theora Decoder The LEAD Theora Decoder is used for decompressing Theora video. Theora LDecTheora.DLL
video compression is a good quality open standard comparable to H.263. DSKernel2.DLL
LEAD Theora Encoder The LEAD Theora Encoder is used for compressing Theora video. Theora LEncTheora.DLL
video compression is good quality open standard comparable to H.263. DSKernel2.DLL

Audio Codecs

Name Comments DirectShow Audio Codecs Media Foundation Audio Codecs
LEAD MPEG Audio Encoder The LEAD MPEG Audio Encoder is a DirectShow filter for compressing LEncMpgA.DLL
Audio data using the MPEG-1 Layer 2 audio compression standard DSKernel2.DLL
(ISO/IEC 11172-3). This audio format can be multiplexed into an MPEG-1
or MPEG-2 file. Use this audio codec when you create MPEG-1 or
MPEG-2 (DVD) files.
LEAD AAC Encoder The LEAD AAC Encoder is a DirectShow filter for compressing audio data LEncAAC.DLL
using the AAC compression standard (ISO/IEC 13818-7). The AAC DSKernel2.DLL
standard delivers high quality audio at lower bitrate compared to other
audio encoding standards like ISO/MPEG Audio Layer-3; MP3.
LEAD AAC Transcoder The LEAD AAC Transcoder is a DirectShow filter. It is used to transcode LTranscoderAAC.DLL
AAC audio streams in mpeg2 format to AAC in ISO (mpeg4) format. DSKernel2.DLL
Note that this conversion is only possible in one direction from MPEG2
format to ISO format. The LEAD AAC Transcoder changes the AAC packet
format without performing re-compression of the audio stream or the
data packets. Conversion is fast while the quality of the original stream is
preserved. To convert an AAC stream inside an MPEG2 transport file to
ISO format without re-compression, insert the LEAD AAC Transcoder
filter between the MPEG2 demux and the ISO multiplexer. The LEAD
Multimedia toolkit automatically inserts the filter in this manner.
LEAD AAC Decoder The LEAD AAC Decoder is a DirectShow filter for decompressing audio LDecAAC.DLL
data using the AAC compression standard (ISO/IEC 13818-7). DSKernel2.DLL
LEAD AC3 Audio Encoder The LEAD AC3 Audio Encoder compresses  audio data using the AC3 LEncAC3.DLL LEncMFAC3.DLL
compression standard (A/52 - Digital Audio Compression Standard DSKernel2.DLL LEncAC3Krn.DLL
(AC-3)). AC3 is the sound format for digital television (DTV), digital DSKERNEL2.DLL
versatile discs (DVDs), high definition television (HDTV), and digital
cable and satellite transmissions. AC3 is a 5.1 format, which means
that it provides five full-bandwidth channels, front left, front right, center,
surround left, and surround right. A low-frequency effect (LFE) channel is
included for the sound needed for special effects and action sequences
in movies. AC3 also has a downmixing feature that ensures compatibility
with devices that do not support the 5.1 format.
LEAD AC3 Decoder The LEAD AC3 Decoder is a DirectShow filter for decompressing audio LDecAC3.DLL
data. AC3 audio compression is used mainly in DVDs with 5.1 channels DSKernel2.DLL
surround sound.
LEAD AMR Encoder The LEAD AMR Encoder is a DirectShow filter for compressing audio data LEncAMR.DLL
using the AMR compression standard. The AMR compression is the DSKernel2.DLL
standard speech codec for 3GPP and is widely used by mobile phones.
It is fast and delivers very low bit rate, but at lower quality than AAC,
Vorbis or MP3.
LEAD AMR Decoder The LEAD AMR Decoder is used to decompress AMR audio. The AMR LDecAMR.DLL LDecAMRMFT.DLL
compression is the standard speech codec for 3GPP and is widely used DSKernel2.DLL DSKERNEL2.DLL
by mobile phones. It is fast and delivers very low bit rate, but at lower
quality than AAC, Vorbis or MP3.
LEAD G.726 Encoder The LEAD G.726 Encoder is a DirectShow filter for compressing audio LCodcG726.DLL
data using the G.726 compression as defined in RFC 3551, and it DSKernel2.DLL
supersedes both the G.721 and G.723 codecs. This ADPCM speech
codec covers the transmission of voice at rates of 16, 24, 32, and 40 kbit/s.
LEAD G.726 Decoder The LEAD G.726 Decoder is a DirectShow filter for decompressing audio LCodcG726.DLL
data using the G.726 compression standard as defined in RFC 3551. DSKernel2.DLL
The official name is ITU-T G.726.
LEAD Vorbis Audio Codec The LEAD Vorbis-based Audio Codec, is a DirectShow - filter for LEncVorbis.DLL
compressing and decompressing audio data using the Vorbis LDecVorbis.DLL
compression algorithm. Vorbis is a new audio compression method
used to store digital music or any audio data. The compressed audio
data can be stored inside AVI or Ogg files. Compared to MP3
compressed audio files, Vorbis based compression produces audio
files that maintain a higher sound quality and/or a smaller compressed
size, depending on the needs of the user. For example, the user has
the option of keeping their digital music collection at the same sound
quality level as MP3, but requiring significantly less disk space. Or, a
user can commit the same amount of storage (disk space) as their
MP3 based files, however their digital music will have higher
quality sound.
LEAD MPEG Audio Encoder The LEAD MPEG Audio Encoder is a DirectShow filter for compressing LEncMpgA.DLL
Audio data using the MPEG-1 Layer 2 audio compression standard DSKernel2.DLL
(ISO/IEC 11172-3). This audio format can be multiplexed into an
MPEG-1 or MPEG-2 file. Use this audio codec when you create MPEG-1
or MPEG-2 files.
MPEG-1 Layer 3 compression offers higher audio compression than
MPEG-1 Layer 2, but this audio compression is not supported by most
MPEG splitters.

With the exception of the Vorbis codec, the Audio and Video Codecs distributed with Multimedia SDKs are solely for evaluation purposes and may not be copied or distributed by you. If you wish to obtain licensing to copy and distribute any or all of the evaluation Codecs, you must first obtain an OEM license covering the Codecs from LEAD. To obtain pricing and other licensing information, please contact oemsales@leadtools.com.

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