YouTube originally offered videos at only one quality level, displayed at a resolution of 320×240 pixels using the Sorenson Spark codec (a variant of H.263),[86][87] with mono MP3 audio.[88] In June 2007, YouTube added an option to watch videos in 3GP format on mobile phones.[89] In March 2008, a high-quality mode was added, which increased the resolution to 480×360 pixels.[90] In November 2008, 720p HD support was added. At the time of the 720p launch, the YouTube player was changed from a 4:3 aspect ratio to a widescreen 16:9.[91] With this new feature, YouTube began a switchover to H.264/MPEG-4 AVC as its default video compression format. In November 2009, 1080p HD support was added. In July 2010, YouTube announced that it had launched a range of videos in 4K format, which allows a resolution of up to 4096×3072 pixels.[92][93] In June 2015, support for 8K resolution was added, with the videos playing at 7680×4320 pixels.[94] In November 2016, support for HDR video was added which can be encoded with Hybrid Log-Gamma (HLG) or Perceptual Quantizer (PQ).[95] HDR video can be encoded with the Rec. 2020 color space.[96]

The online-video unit posted revenue of about $4 billion in 2014, up from $3 billion a year earlier, according to two people familiar with its financials, as advertiser-friendly moves enticed some big brands to spend more. But while YouTube accounted for about 6% of Google’s overall sales last year, it didn’t contribute to earnings. After paying for content, and the equipment to deliver speedy videos, YouTube’s bottom line is “roughly break-even,” according to a person with knowledge of the figure.
Most videos enable users to leave comments, and these have attracted attention for the negative aspects of both their form and content. In 2006, Time praised Web 2.0 for enabling "community and collaboration on a scale never seen before", and added that YouTube "harnesses the stupidity of crowds as well as its wisdom. Some of the comments on YouTube make you weep for the future of humanity just for the spelling alone, never mind the obscenity and the naked hatred".[379] The Guardian in 2009 described users' comments on YouTube as:[380]
On Thursday, the Senate voted unanimously to blame Crown Prince Mohammed bin Salman for the murder of the Saudi journalist Jamal Khashoggi, and 56 members—a clear majority—-cast votes to end U.S. support for the Saudi-led war effort in Yemen. The rebuke was followed shortly afterward by a revelation about the Defense Department’s refueling of that bombing campaign: According to the Pentagon, the department had somehow failed to bill the Saudis and the Emiratis for at least $331 million in fuel and servicing costs. The Saudis, it appears, never directly paid the U.S. a penny.
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