Features new to Windows 7: Difference between revisions

Revision as of 14:00, 25 March 2023

Revision as of 14:06, 25 March 2023

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===Format support===

Windows 7 includes [[Audio Video Interleave|AVI]], [[WAV]], [[LATM|AAC/ADTS]] file media sinks to read the respective formats,<ref name="MFTCodecs">{{cite web |url=http://msdn.microsoft.com/en-us/library/dd757927(VS.85).aspx |title=Supported Media Formats in Media Foundation |work=[[MSDN]] |publisher=[[Microsoft]] |date=16 November 2013 |access-date=24 November 2013 |archive-date=29 April 2010 |archive-url=https://web.archive.org/web/20100429001326/http://msdn.microsoft.com/en-us/library/dd757927(VS.85).aspx |url-status=live }}</ref> an MPEG-4 file source to read [[MPEG-4 Part 14|MP4]], M4A, M4V, MP4V [[.mov#QuickTime fileFile formatFormat|MOV]] and [[3GP and 3G2|3GP]] [[Container format (digital)|container formatsformat]]s<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/dd757766(VS.85).aspx |title=MPEG-4 File Source |work=[[MSDN]] |publisher=[[Microsoft]] |date=16 November 2013 |access-date=24 November 2013 |archive-date=14 March 2010 |archive-url=https://web.archive.org/web/20100314122622/http://msdn.microsoft.com/en-us/library/dd757766(VS.85).aspx |url-status=live }}</ref> and an MPEG-4 file sink to output to MP4 format.<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/dd757763(VS.85).aspx |title=MPEG-4 File Sink |work=[[MSDN]] |publisher=[[Microsoft]] |date=16 November 2013 |access-date=24 November 2013 |archive-date=4 August 2010 |archive-url=https://web.archive.org/web/20100804063713/http://msdn.microsoft.com/en-us/library/dd757763(VS.85).aspx |url-status=live }}</ref> Windows 7 also includes a media source to read [[MPEG transport stream]]/BDAV MPEG-2 transport stream (M2TS, MTS, M2T and [[AVCHD]]) files.{{Citation needed|date=April 2010}}

Transcoding (encoding) support is not exposed through any built-in Windows application but codecs are included as [[Media Foundation]] Transforms (MFTs).<ref name="MFTCodecs"/> In addition to [[Windows Media Audio]] and [[Windows Media Video]] encoders and decoders, and ASF file sink and file source introduced in Windows Vista,<ref name="MFTCodecs"/> Windows 7 includes an [[H.264]] encoder with Baseline profile level 3 and Main profile support<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/dd797816(VS.85).aspx |title=H.264 Video Encoder |work=[[MSDN]] |publisher=[[Microsoft]] |date=16 November 2013 |access-date=24 November 2013 |archive-date=4 March 2010 |archive-url=https://web.archive.org/web/20100304095408/http://msdn.microsoft.com/en-us/library/dd797816(VS.85).aspx |url-status=live }}</ref> and an [[Advanced Audio Coding|AAC]] Low Complexity ([[Advanced Audio Coding|AAC-LC]]) profile encoder.<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/dd742785(VS.85).aspx |title=AAC Encoder |work=[[MSDN]] |publisher=[[Microsoft]] |date=16 November 2013 |access-date=24 November 2013 |archive-date=13 October 2009 |archive-url=https://web.archive.org/web/20091013084005/http://msdn.microsoft.com/en-us/library/dd742785(VS.85).aspx |url-status=live }}</ref>

For playback of various media formats, Windows 7 also introduces an H.264 decoder with Baseline, Main, and High profiles support, up to level 5.1,<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/dd797815(VS.85).aspx |title=H.264 Video Decoder |work=[[MSDN]] |publisher=[[Microsoft]] |date=16 November 2013 |access-date=24 November 2013 |archive-date=21 April 2010 |archive-url=https://web.archive.org/web/20100421161950/http://msdn.microsoft.com/en-us/library/dd797815(VS.85).aspx |url-status=live }}</ref> [[Advanced Audio Coding|AAC-LC]] and [[High-Efficiency Advanced Audio Coding|HE-AAC]] v1 ([[Spectral band replication|SBR]]) multichannel, HE-AAC v2 ([[Parametric Stereo|PS]]) stereo decoders,<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/dd742784(VS.85).aspx |title=AAC Decoder |work=[[MSDN]] |publisher=[[Microsoft]] |date=16 November 2013 |access-date=24 November 2013 |archive-date=18 March 2010 |archive-url=https://web.archive.org/web/20100318062142/http://msdn.microsoft.com/en-us/library/dd742784(VS.85).aspx |url-status=live }}</ref> [[MPEG-4 Part 2]] [[MPEG-4 Part 2#Simple Profile (SP)|Simple Profile]] and [[MPEG-4 Part 2#Advanced Simple Profile (ASP)|Advanced Simple Profile]] decoders<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/dd756559(VS.85).aspx |title=MPEG4 Part 2 Video Decoder |work=[[MSDN]] |publisher=[[Microsoft]] |access-date=24 November 2013 |archive-date=11 February 2010 |archive-url=https://web.archive.org/web/20100211070005/http://msdn.microsoft.com/en-us/library/dd756559(VS.85).aspx |url-status=live }}</ref> which includes decoding popular codec implementations such as [[DivX]], [[Xvid]] and [[Nero Digital]] as well as [[MJPEG]]<ref name="MFTCodecs"/> and [[DV]]<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/dd940322(VS.85).aspx |title=DV Video Decoder |work=[[MSDN]] |publisher=[[Microsoft]] |date=16 November 2013 |access-date=24 November 2013 |archive-date=29 March 2010 |archive-url=https://web.archive.org/web/20100329062927/http://msdn.microsoft.com/en-us/library/dd940322(VS.85).aspx |url-status=live }}</ref> MFT decoders for AVI. [[Windows Media Player 12]] uses the built-in Media Foundation codecs to play these formats by default.

Windows 7 also updates the [[DirectShow]] filters introduced in Windows Vista for playback of [[MPEG-2]] and [[Dolby Digital]] to decode H.264, AAC, HE-AAC v1 and v2<ref>{{cite web |url=http://msdn.microsoft.com/en-us/library/dd390676(VS.85).aspx |title=Microsoft MPEG-1/DD/AAC Audio Decoder |work=[[MSDN]] |publisher=[[Microsoft]] |date=16 November 2013 |access-date=24 November 2013 |archive-date=3 December 2013 |archive-url=https://web.archive.org/web/20131203021615/http://msdn.microsoft.com/en-us/library/dd390676(VS.85).aspx |url-status=live }}</ref> and [[Dolby Digital Plus]]<ref>{{cite web |first=Robin |last=Selden |url=http://windowsteamblog.com/blogs/partner/archive/2009/11/17/windows-7-delivers-next-generation-audio.aspx |title=Windows 7 Delivers Next-Generation Audio |publisher=[[Microsoft]] |work=Windows Partner Blog |date=17 November 2009 |access-date=24 November 2013 |archive-date=1 May 2010 |archive-url=https://web.archive.org/web/20100501132833/http://windowsteamblog.com/blogs/partner/archive/2009/11/17/windows-7-delivers-next-generation-audio.aspx |url-status=live }}</ref> (including downmixing to Dolby Digital).