ncvisual_stream: add timescale param

doc/man/man1/notcurses-view.1

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-.TH notcurses-view 1 "v1.0.2"
-.SH NAME
-notcurses-view \- Render multimedia to the terminal
-.SH SYNOPSIS
-.B notcurses-view
-.IR files...
-.SH OPTIONS
-.TP
-.IR files
-Files to successively render.
-.SH DESCRIPTION
-.B notcurses-view
-renders multimedia to the terminal using libav.
-.SH NOTES
-Proper display requires a terminal advertising the RGB terminfo(5) capability (necessary for specification of arbitrary 24bpp colors), and a monospaced font with good Unicode support.
-.SH SEE ALSO
-notcurses(3notcurses), ffmpeg(1), terminfo(5)

doc/man/man1/notcurses-view.1.md

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+% notcurses-view(1)
+% nick black <nickblack@linux.com>
+% v1.0.2
+
+# NAME
+
+notcurses-view - Render images and video to the console
+
+# SYNOPSIS
+
+**notcurses-view** [**-h|--help**] [**-d delaymult**] [**-l loglevel**] files
+
+# DESCRIPTION
+
+**notcurses-view** uses the FFmpeg libraries and notcurses to render images
+and videos to the terminal. Media will be scaled to the terminal's size.
+
+# OPTIONS
+
+**-d delaymult**: Apply a rational multiplier to the standard delay of 1s.
+
+**-l loglevel**: Log everything (high log level) or nothing (log level 0) to stderr.
+
+files: Select which files to render, and what order to render them in.
+
+# NOTES
+Optimal display requires a terminal advertising the **rgb** terminfo(5)
+capability, or that the environment variable **COLORTERM** is defined to
+**24bit** (and that the terminal honors this variable), along with a good
+monospaced font supporting the Unicode Block Drawing Characters.
+
+# SEE ALSO
+notcurses(3notcurses), notcurses_ncvisual(3), terminfo(5)