This directory contains video files generated by the Legato Frame-Rate- Converter software. Important Notes: 1) SAVING FILES ON YOUR SYSTEM FOR VIEWING: Downloads are not fast emough to play these sequences directly - save the link as a file first. To do this: In Linux, use the right-mouse-button over a link and select "save link as..." from the drop-down menu. On a Mac, click on the link and select "save file". 2) SECURITY: These files contain H.264 compressed video. Play using vlc or mplayer, or recent versions of Windows Media Player. To make sure you don't run saved files from (1), first launch your player and then use its "file" menu to play the downloaded file. 3) VIEWING SMOOTH VIDEO: All our downloaded video should be able to play smoothly. If you follow this guide, and are unable to play smoothly, you may need to find another computer system to use for evaluation. These probably won't play at 60Hz on cell phones. a) Make sure any downloaded clip matches your display refresh rate! If it doesn't, you'll get unavoidable judder. b) Smooth playing of 1080P H.264-compressed video needs a lot of compute power! Also Internet bandwidths are NOT sufficient to play even the smallest SD sequences directly, as they were compressed with quality in mind, not size. The files must be downloaded first, and then they have a chance of being played smoothly. c) Once the clip is downloaded, make sure that your computer is not doing other compute or display-intensive tasks. d) Start playback of small-format video first, e.g. "ice_skating_704x576". Finally try full 1080P sequences. If playback from saved files appears uneven or jerky, then check CPU usage for your player during playback. If it is near 100%, your computer may not be fast enough to uncompress and render all images in the sequence in real time. e) If direct playing of the downloaded sequence doesn't work, and if you have vdpau hardware acceleration support on your system, you may be able to playback the files from our site directly in real-time. On 64-bit Linux systems, this is achieved using: mplayer -vo vdpau -vc ffh264vdpau -fs -quiet -loop 0 f) If you have a 64-bit Linux and don't have vdpau or some other hardware acceleration, then the following 2-stage decompression using ffmpeg is certain of getting the smoothest playback. First, decompress and recompress the downloaded to a "temp.y4mz" file using our lossless y4mzip compression tool (available for download): ffmpeg -i -pix_fmt yuv420p -f yuv4mpegpipe - | y4mzip -o temp.y4mz Note: avconv is now used on some machines instead of ffmpeg, but its a project fork, so options are the same in this case. The temp file may be large, but is about 1/2 the size of raw yuv420 files. Then play back the file in real-time with smooth motion using the freely available mplayer: y4mzip -i temp.y4mz -r 10 | mplayer -demuxer y4m - -fs -loop 1 The above command repeats playback 10 times. It will show small, smoothly scrolling text as y4mzip is an evaluation copy. 4) DEINTERLACED SEQUENCES: Some SD sequences (e.g. "susie") were deinterlaced from an interlaced source prior to FRC. These sequences may have single 1/2-lines that flickers at the top and bottom of each frame. This is an artifact present in the interlaced SD source material, and is NOT a problem with the Legato software. 5) COPYRIGHT: To the best of our knowledge, the sequences in this directory are either freely available, or include Federal Government material which cannot be copyright. Oregon coast and "puppy" material is our own, and is made freely available. Please contact us about specific sequences if you know otherwise. Copyright (c) 2011-2013, Isovideo LLC