blind-repeat.1 (1409B)
1 .TH BLIND-REPEAT 1 blind 2 .SH NAME 3 blind-repeat - Repeat a video 4 .SH SYNOPSIS 5 .B blind-repeat 6 ([-f] 7 .I count 8 | 9 .RB ' inf ') 10 .RI [ file ] 11 .SH DESCRIPTION 12 .B blind-repeat 13 write the a video to stdout that is a loop of the 14 selected video. The looped video is read from the 15 selected 16 .IR file . 17 The video will be repeated 18 .I count 19 times, or until there is no process the reads from 20 this process's stdout if 21 .B inf 22 is selected instead of 23 .IR count . 24 .P 25 .I file 26 must be a regular file, or 27 .RB ' - '. 28 If 29 .I file 30 is 31 .RB ' - ', 32 .B blind-repeat 33 will read stdin into memory; you are highly discouraged 34 from using this unless stdin is a single frame, or known 35 to only be a very small number of frames, is it can 36 potentially use all of the computer's memory. 37 .P 38 If 39 .I file 40 is omitted, 41 .RB ' - ' 42 is used. 43 .SH OPTIONS 44 .TP 45 .B -f 46 Repeat each frames 47 .B count 48 times before copying the next frame, rather than 49 copying the entire video 50 .B count 51 times. 52 .SH REQUIREMENTS 53 .B blind-repeat 54 requires enough free memory to load the entire video 55 into memory if it is read from stdin. A frame requires 56 32 bytes per pixel it contains. So for a 720p video at 57 25 Hz, 1 GB is reached in just below 1.5 seconds. 58 However, if 59 .B -f 60 is used, only a full video frame will be loaded into 61 memory rather than an entire video, if reading from stdin. 62 .SH SEE ALSO 63 .BR blind (7), 64 .BR blind-from-image (1) 65 .SH AUTHORS 66 Mattias Andrée 67 .RI < maandree@kth.se >