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Full Discussion: Input redirection script
Top Forums Shell Programming and Scripting Input redirection script Post 302968211 by sea on Saturday 5th of March 2016 08:28:02 AM
Old 03-05-2016
Why using redirection for playing the video?
Also, having a sleep duration of over a minute, COULD cause the 'hang' (actually just a delay) at its end, as it is waiting before writing the actualy EOF-bit of the video into the FIFO, where it would read and end then.

To just play the video, this should suffice:
Code:
mplayer -vf scale=480:360 tom_and_jerry.mp4

Either way, i'm confused by ./yuv4mpeg_to_v4l2 as the last part indicates 'video 4 linux (2)', or otherwise a transformation of the mp4 to an mpeg video.
But after all, this just seems like another tempfile, so you dont read from the pipe directly.

But (my) question is, why read from a non-fifo file, when redirectig output to fifo, but redirecting the fifo its output to another (regular) output file?

Dont have mplayer installed, but with ffplay there is an option called: -autoexit

Hope this helps
 

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totem-video-thumbnailer(1)												totem-video-thumbnailer(1)

NAME
totem-video-thumbnailer - video thumbnailer for the GNOME desktop SYNOPSYS
totem-video-thumbnailer [-j|--jpeg] [-l|--no-limit] [-g num|--gallery num] [-s size] input output [backend options] DESCRIPTION
This manual page documents briefly the totem-video-thumbnailer command. This manual page was written for the Debian Project because the original program does not have a manual page. totem-video-thumbnailer is used internally by GNOME applications such as nautilus to generate PNG thumbnails of video files. While it is possible to invoke it manually, it is usually done automatically by nautilus. ARGUMENTS
input The input filename. This can be in any format that totem can play. output The output filename, output in PNG format. backend options Options to be passed to the backend (i.e. gstreamer). OPTIONS
-j --jpeg Switch the output format to JPEG. The default is PNG. -g num --gallery num Output a gallery of the given number (0 is the default) of screenshots. -l --no-limit Don't limit the thumbnailing time to 30 seconds. For debugging purposes. -s size The size of the thumbnail. Example: "64x64". The default is "128x96". AUTHOR
totem-video-thumbnailer was written by Bastien Nocera <hadess@hadess.net>. This manual page was written by Zack Cerza <zcerza@coe.neu.edu> for the Debian Project (but may be used by others). SEE ALSO
totem, nautilus GNOME
2009-05-06 totem-video-thumbnailer(1)
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