The MP3 format is a compressed audio format that allows for high sound quality with a relatively small file size. The audio codec converts the audio stream to MP3 format. Conversion is performed using a specific audio codec, such as LAME or FFmpeg. The audio extraction algorithm normally uses the appropriate audio codec such as MP3 or AAC to extract the audio from the video file.įormat conversion: Format conversion involves transforming the extracted audio file into an MP3 format. Typically, an audio encoding library such as FFmpeg is used, which is a collection of open source libraries that allow recording, converting, and streaming audio and video. Audio extraction can be performed in several ways, depending on the tool or software being used. This makes it possible to compress audio by a factor of about 5, without noticeable change to the sound of the music.Īudio extraction: Audio extraction involves separating the audio stream from the video and separating it into a separate audio file.

This means that when encoding certain sound samples, some sounds can be left out as they will not be heard. The human ear can not hear certain sounds if they are masked by other sounds. When encoding to MP3, the encoder is smart.

This means that each time something is compressed with it, some information is lost. The MP3 format is a lossy compression format. Karim could not easily find video clips of either event online, which led to the idea of a video sharing site. Karim said the inspiration for YouTube first came from Janet Jackson's role in the 2004 Super Bowl incident when her breast was exposed during her performance, and later from the 2004 Indian Ocean tsunami. Difficulty in finding enough dating videos led to a change of plans, with the site's founders deciding to accept uploads of any type of video. They created posts on Craigslist asking attractive females to upload videos of themselves to YouTube in exchange of an $100 reward. Hurley and Chen said that the original idea for YouTube was a video version of an online dating service, and had been influenced by the website Hot or Not. YouTube was founded by Chad Hurley, Steve Chen and Jawed Karim, who were all early employees of PayPal.

Youtube to mp3 128 kbps