DCT is the secret to JPEG's compression. Image Analyst Mike Pound explains how the compression works. Colourspaces: https://www.youtube.com/watch?v=LFXN9PiOGtY JPEG 'files' & Colour: https://www.youtube.com/watch?v=n_uNPbdenRs Computer That Changed Everything (Altair 8800): https://www.youtube.com/watch?v=6LYRgrqJgDc Problems with JPEG: COMING SOON Upside Down Trees (Huffman Encoding): https://www.youtube.com/watch?v=umTbivyJoiI Colourspaces: https://www.youtube.com/watch?v=LFXN9PiOGtY JPEG isn't a file format - JPEG pt1: https://www.youtube.com/watch?v=n_uNPbdenRs Upside Down Trees (Huffman Encoding): https://www.youtube.com/watch?v=umTbivyJoiI Problems with JPEG: COMING SOON! Computer That Changed Everything (Altair 8800): https://www.youtube.com/watch?v=6LYRgrqJgDc http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com/