1ncplayer(1) ncplayer(1)
2
6 ncplayer - Render images and video to a terminal
7
9 ncplayer [-h] [-V] [-q] [-d delaymult] [-l loglevel] [-b blitter] [-s
10 scalemode] [-k] [-L] [-t seconds] [-n] [-a color] files
11
13 ncplayer uses a multimedia-enabled Notcurses to render images and
14 videos to a terminal. By default, stretch-type scaling is used to fill
15 the rendering area, and the sex-type blitter is used (where known to
16 work well) for a 3x2→1 mapping from pixels to cells. In a terminal
17 that doesn't support Unicode 13 sextants, the quadblitter is used in‐
18 stead.
19
21 -d delaymult: Apply a non-negative rational multiplier to the de‐
22 layscale. Only applies to multiframe media such as video and animated
23 images. Not supported with -k.
24 -t seconds: Delay seconds after each file. If this option is used, the
26 "press any key to continue" prompt will not be displayed. seconds may
27 be any non-negative number.
28 -l loglevel: Log between everything (loglevel 7) and nothing (loglevel
30 0) to stderr.
31 -s scalemode: Scaling mode, one of none, hires, scale, scalehi, or
33 stretch.
34 -b blitter: Blitter, one of ascii, half, quad, sex, braille, or pixel.
36 -m margins: Define rendering margins (see below).
38 -L: Loop frames until a key is pressed. Not supported with -k.
40 -k: Use direct mode (see notcurses_direct(3)). This will have the ef‐
42 fect of leaving the output on-screen after program exit, and generating
43 it inline (rather than clearing the screen and placing it at the top).
44 Not supported with -L or -d.
45 -q: Print neither frame/timing information along the top of the screen,
47 nor the output summary on exit.
48 -a: Treat color as if it were transparent.
50 -n: Use non-interpolative scaling. The result is usually less pleasing
52 to the eye, but it doesn't introduce new colors.
53 -V: Print the program name and version, and exit with success.
55 -h: Print help information, and exit with success.
57 files: Select which files to render, and what order to render them in.
59 Default margins are all 0 and default scaling is stretch. The full
61 rendering area will thus be used. Using -m, margins can be supplied.
62 Provide a single number to set all four margins to the same value, or
63 four comma-delimited values for the top, right, bottom, and left mar‐
64 gins respectively. Top, right, and bottom margins are ignored when -k
65 is used. Negative margins are illegal.
66 Scaling mode stretch resizes the object to match the target rendering
68 area exactly. Unless a blitter is specified with -b, stretch will use
69 the highest-resolution non-pixel blitter available. scale resizes the
70 object so that the longer edge of the rendering area is matched exact‐
71 ly, and the other edge is changed to maintain aspect ratio. none uses
72 the original image size. Both scale and none aim for a 1:1 aspect ra‐
73 tio, and default to NCBLIT_2x1 at the cost of some potential resolu‐
74 tion. The alternatives scalehi and hires use the highest-resolution
75 non-pixel blitter available. Pixel blitting is never performed unless
76 explicitly requested with -bpixel.
77 Blitters can be selected at runtime by pressing '0' through '6'.
79 NCBLIT_DEFAULT corresponds to '0'. The various blitters are described
80 in notcurses_visual(3). If a blitter cannot be used in the current en‐
81 vironment, the current blitter will be retained.
82 Multiframe media can be paused with space. Press space (or any other
84 valid control) to resume.
85
87 If you're looking for a fast, inline image viewer for the shell, try
88 using ncplayer -k -t0 -q.
89 Optimal display requires a terminal advertising the rgb [22mterminfo(5) ca‐
91 pability, or that the environment variable COLORTERM is defined to
92 24bit (and that the terminal honors this variable), along with a fixed-
93 width font with good coverage of the Unicode Block Drawing Characters.
94
96 Direct mode is kinda fundamentally suboptimal for multiframe media, and
97 is not yet supported with -L nor -d. Top, right, and bottom margins
98 are ignored without warning when using direct mode.
99
101 notcurses(3), notcurses_direct(3), notcurses_visual(3), terminfo(5),
102 unicode(7)
103
105 nick black <nickblack@linux.com>.
106 v2.4.9 ncplayer(1)