Ubuntu Manpage: MP4Client - GPAC MPEG-4 command-line Player

Provided by: gpac_0.5.2-426-gc5ad4e4+dfsg5-5_amd64

NAME

       MP4Client - GPAC MPEG-4 command-line Player

SYNOPSIS

       MP4Client [options] [file]

DESCRIPTION

       MP4Client  is  GPAC command-line player. It supports all GPAC playback features (2D and 3D support, local
       playback, RTP streaming, HTTP faststart, many audio and video codecs ...). MP4Client also supports visual
       extraction to BMP, RAW or AVI (no compression, no audio).

STARTUP OPTIONS

-c file
specifies config file to use. Default config file is located in user home directory and created if
not found.

-rti file
logs run-time information to file. Information logged is: FPS, CPU, Memory usage.

-quiet removes script message, buffering and downloading status.

-strict-error
exits after the first error is reported.

-log-file FILE
specifies where to write logs. Default is stdout. Same as -lf.

-logs TOOLS
sets log tools and levels, formatted as a ':'-separated list of toolX[:toolZ]@level. By default
all errors are logged. level can be one of quiet, error, warning, info or debug. tool can be:
core: libgpac core
coding: bitstream formats (audio, video, scene)
container: container formats (ISO File, MPEG-2 TS, AVI, ...)
network: network data exept RTP trafic
rtp: rtp trafic
author: authoring tools (hint, import, export)
sync: terminal sync layer
codec: terminal codec messages
parser: scene parsers (svg, xmt, bt) and other
media: terminal media object management
scene: scene graph and scene manager
script: scripting engine messages
interact: interaction engine (events, scripts, etc)
smil: SMIL timing engine
compose: composition engine (2D, 3D, etc)
mmio: Audio/Video HW I/O management
rti: various run-time stats
cache: HTTP cache subsystem
audio: Audio renderer and mixers
mem: GPAC memory tracker
module: GPAC modules debugging
mutex: mutex
none: no tool logged
all: all tools logged - other tools can be specified afterwards.

PLAYBACK OPTIONS

A file can be controled during playback by typing one of the following key at prompt.

o connects to a new URL entered at prompt by user.

r restarts the current presentation

p plays/pauses the current presentation

s step one frame ahead in the current presentation

z seek into presentation. Seek percentage is entered at prompt

t prints current timing of the main timeline of the presentation

w prints world info of the current presentation

v prints list of all GF_ObjectDescriptor used in current presentation.

i prints information of a given OD. Object ID is entered at prompt.

b prints all objects timing and buffering info.

m prints all objects buffering and memory info.

d dumps current presentation scene graph to file or stdout.

k Turns stress mode on/off.

n Changes current navigation mode if possible/allowed. When a Layer3D is selected, sets layer3D
navigation if allowed.

x Reset to last active viewpoint. When a layer3D is selected, resets layer3D viewpoint.

2 Reload MPEG-4 Client with GPAC 2D Renderer.

3 Reload MPEG-4 Client with GPAC 3D Renderer.

4 forces 4/3 Aspect Ratio.

5 forces 16/9 Aspect Ratio.

6 forces no aspect ratio (always fill screen).

7 forces original Aspect Ratio (default mode).

l prints the list of available plugins.

c prints some GPAC configuration info.

q quits the application.

C enables streaming cache.

S stops streaming cache and record it.

A stops streaming cache and discard it.

h prints list of available commands.

WINDOW SHORTCUTS

       When MP4Client window has the focus, the following shortcuts are available

       Alt + right
              Seeks 5% ahead from current time.

       Alt + left
              Seeks 5% before the current time

       Alt + up
              Increases volume by 5%

       Alt + down
              Decreases volume by 5%

       HOME   Resets navigation to last bound viewpoint/viewport

       4, 5, 6, 7
              Same as non-window values

       ESCAPE , alt+return, doubleclick
              Toggles fullscreen on/off.

       ctrl + 'f'
              Prints current rendering framerate.

       ctrl + 'R'
              Sends a redraw message (complete scene state recompute).

       ctrl + 'P'
              Play/Pause.

       ctrl + 'S'
              Step one frame ahead.

CONFIGURATION FILE

       When launched for the first time, MP4Client will ask for a font directory and a cache directory.

       Font Directory
              Indicates the absolute path to a directory containing a TrueType font  repository.  In  case  this
              directory is not specified or does not contain valid TrueType fonts, text will be disabled.

       Cache Directory
              Indicates the absolute path to a directory with write access to store files retrieved through HTTP
              downloads. In case this directory is not specified or has no write  access  HTTP  downloads  won't
              work.

NAVIGATION

       Navigation  with MP4Client depends on the renderer type (2D or 3D) and also on content - some content may
       disable user selectable navigation.

       Walk & Fly modes
              Mouse: Horizontal move: Horizontal pan - Vertical move: Z-translate - Vertical move+CTRL or Wheel:
              Vertical   pan  -  Right  Click  (Walk  mode  only):  Jump  Keys:  left/right:  Horizontal  pan  -
              left/right+CTRL: Horizontal translate - up/down: Z-translate - up/down+CTRL: Vertical pan

       Pan mode
              Mouse: Horizontal move: Horizontal pan - Vertical move:  Vertical  pan  -  Vertical  move+CTRL  or
              Wheel:  Z-translate  Keys:  left/right:  Horizontal pan - left/right+CTRL: Horizontal  translate -
              up/down: Vertical pan - up/down+CTRL: Z-translate

       Slide mode
              Mouse: Horizontal move: Horizontal translate  -  Vertical  move:  Vertical  translate  -  Vertical
              move+CTRL  or  Wheel:  Z-translate  Keys:  left/right:  Horizontal  translate  -  left/right+CTRL:
              Horizontal pan - up/down: Vertical translate - up/down+CTRL: Z-translate

       Examine & Orbit mode
              Mouse: Horizontal move: Y-Axis rotate - Horizontal move+CTRL: No  move  -  Vertical  move:  X-Axis
              rotate   -   Vertical   move+CTRL   or  Wheel:  Z-translate  Keys:  left/right:  Y-Axis  rotate  -
              left/right+CTRL: Horizontal translate - up/down: X-Axis rotate - up/down+CTRL: Y-translate

       Game mode (press END to escape)
              Mouse: Horizontal move: H pan - Vertical move: Vertical pan Keys: left/right: Horizontal translate
              - up/down: Z-translate

       All 3D modes
              CTRL+PGUP/PGDOWN will zoom in/out camera (field of view)

       Slide Mode in 2D
              Mouse:  Horizontal  move:  Horizontal translate - Vertical move: Vertical translate - V move+CTRL:
              zoom Keys: left/right: Horizontal translate - up/down: Vertical translate - up/down+CTRL: zoom

       Examine Mode in 2D (3D renderer only)
              Mouse: Horizontal move: Y-Axis rotate - Vertical move:  X-Axis  rotate  Keys:  left/right:  Y-Axis
              rotate - up/down: X-Axis rotate

       SHIFT  Speeds up movement

VISUAL EXTRACTION OPTIONS

When used to dump a visual presentation, the client is no longer interactive. All GPAC features are
supported during capture, except audio-related ones. The following options can be passed at prompt:

-bmp [times]
dumps the specified frames to BMP format. If no time is specified, capture is made at t=0s. time
is given in millisecond, as an SMPTE time code or as HH:MM:SS:MS time code. You may specify
several frame times by using a dash-separated list of times (eg, '0-10-15').

-raw [times]
dumps the specified frames to RAW format. If no time is specified, cpature is made at t=0s.

-avi start:end
dumps the specified segment to uncompressed AVI format.

-fps rate
specifies frame rate for AVI dumping. Default frame rate is 25.0.

-size WxH
specifies frame size for dumping. Default frame size is the scene size.

-fill uses fill aspect ratio. By default, the scene aspect ratio is preserved when dumping.

-show show window while dumping the content. By default, the window is hidden during capture.

-2d forces usage of 2D renderer. By default, MP4Client uses the renderer indicated in GPAC
configuration file.

-3d forces usage of 3D renderer. By default, MP4Client uses the renderer indicated in GPAC
configuration file.