YouTube: Perbedaan antara revisi

YouTube awalnya menawarkan video dengan satu level kualitas, yaitu resolusi 320x240 [[piksel]] dengan codec [[Sorenson codec|Sorenson Spark]] (varian dari [[H.263]]),<ref name="incomplete-h263">{{cite web |url=http://www.kaourantin.net/2005/08/quest-for-new-video-codec-in-flash-8.html |title=The quest for a new video codec in Flash 8 |author=Tinic Uro |quote=We went this route before with Sorenson Spark which is an incomplete implementation of H.263 and it bit us badly when trying to implement certain solutions. |date=August 13, 2005 |accessdate=January 27, 2011 |archive-date=2009-02-06 |archive-url=https://web.archive.org/web/20090206142709/http://kaourantin.net/2005/08/quest-for-new-video-codec-in-flash-8.html |dead-url=yes }}</ref><ref name="flash-video">{{cite web |url=http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf |title=Adobe Flash Video File Format Specification Version 10.1 |author=Adobe Systems Incorporated |format=PDF |page=72 |quote=Sorenson H.263 |year=2010 |accessdate=January 27, 2011}}</ref> dengan audio MP3 mono.<ref>{{cite web|url=http://www.sorensonmedia.com/news/?n=379|title=Market Demand for Sorenson Media's Sorenson Spark Video Decoder Expands Sharply|publisher=Sorenson Media|date=June 2, 2009|accessdate=July 31, 2009|archive-date=2009-08-27|archive-url=https://web.archive.org/web/20090827160021/http://www.sorensonmedia.com/news/?n=379|dead-url=yes}}</ref> Pada bulan Juni 2007, YouTube menambahkan opsi menonton video berformat [[3GP dan 3G2|3GP]] di telepon genggam.<ref>{{cite web|url=http://www.downloadsquad.com/2007/06/17/youtube-mobile-goes-live/|title=YouTube Mobile goes live|date=June 17, 2007|accessdate=August 11, 2010|archive-date=2007-06-20|archive-url=https://web.archive.org/web/20070620083032/http://www.downloadsquad.com/2007/06/17/youtube-mobile-goes-live/|dead-url=yes}}</ref> Bulan Maret 2008, mode kualitas tinggi ditambahkan hingga resolusi 480x360 piksel.<ref>{{cite web|url=http://youtube-global.blogspot.com/2008/03/youtube-videos-in-high-quality.html|title=YouTube Blog&nbsp;– YouTube Videos in High Quality|date=March 24, 2008|publisher=YouTube|accessdate=April 4, 2009}}</ref> Bulan November 2008, mode [[video berdefinisi tinggi|HD]] [[720p]] ditambahkan. Saat peluncuran 720p, pemutar YouTube diganti [[rasio aspek]]nya dari [[4:3]] menjadi [[layar lebar]] [[16:9]].<ref>{{cite web|url=http://news.cnet.com/8301-17939_109-10104182-2.html?tag=mncol;txt|title=YouTube videos go HD with a simple hack|work=CNET|date=November 20, 2008|accessdate=August 14, 2010}}</ref> Dengan fitur baru ini, YouTube mulai mengalihkan format kompresi video bakunya ke [[H.264/MPEG-4 AVC]]. Pada bulan November 2009, mode HD [[1080p]] ditambahkan. Bulan Juli 2010, YouTube mengumumkan bahwa mereka telah meluncurkan serangkaian video berformat [[resolusi 4K|4K]], sehingga batas resolusinya naik hingga 4096x3072 piksel.<ref>{{Cite news|url=http://youtube-global.blogspot.com/2010/07/whats-bigger-than-1080p-4k-video-comes.html|title = What's bigger than 1080p? 4K video comes to YouTube|publisher =Official YouTube Blog|date=July 9, 2010|accessdate=July 10, 2010}}</ref><ref>{{Cite news|url=http://news.cnet.com/8301-27076_3-20010174-248.html|title = YouTube now supports 4k-resolution videos|work=CNET|date=July 9, 2010|accessdate=July 10, 2010|first=Josh|last=Lowensohn|archive-date=2011-04-29|archive-url=https://web.archive.org/web/20110429140041/http://news.cnet.com/8301-27076_3-20010174-248.html|dead-url=yes}}</ref> Akan tetapi, per 2012 batas ini diturunkan menjadi 2048 x 1536.

Video-video YouTube tersedia dalam beragam level kualitas. Nama kualitas standar (SQ), kualitas tinggi (HQ), dan definisi tinggi (HD) sudah diganti dengan angka-angka yang mewakili resolusi vertikal video. Aliran video bakunya menggunakan format [[H.264/MPEG-4 AVC]] dengan audio [[Advanced Audio Coding|AAC]] stereo.<ref>{{cite web|url=http://news.cnet.com/8301-17939_109-10396826-2.html|title=YouTube to get high-def 1080p player|date=November 29, 2009|publisher=CNET|accessdate=December 2, 2009|archive-date=2013-08-01|archive-url=https://web.archive.org/web/20130801100638/http://news.cnet.com/8301-17939_109-10396826-2.html|dead-url=yes}}</ref>

| 21 Juni 2012<ref>[http://www.humanipo.com/blog/713/Google-launches-YouTube-in-Ghana "Google launches YouTube in Ghana"] {{Webarchive|url=https://web.archive.org/web/20120624232254/http://www.humanipo.com/blog/713/Google-launches-YouTube-in-Ghana |date=2012-06-24 }}, June 22, 2012. Retrieved July 8, 2012.</ref>