What is VQMP?

VQMP – Advanced QA/QC Media Player

VideoQ VQMP is a Windows OS real-time media player that can be used as a stand-alone QA/QC tool, or as a remotely controlled automatable viewer, or it can work in close cooperation with other tools, such as VideoQ VQV player-analyzer.

Key Information

Home Page: VideoQ website
Product Page: VideoQ VQMP advanced media player
Companion Tool: VideoQ VQV player-analyzer
Core Engine: Based on MPV with custom VideoQ enhancements

Remote Control Capability

VQMP via built-in server can report its status and it can be controlled by short command messages containing:

1st argument: Full path to media file, URL or network protocol address
Optional 2nd argument: Timeline position within media file in s.ms format

Last Page: Misc Controls

Next Page: Features

Features

VQMP offers comprehensive features for professional video quality control and analysis:

Core Features

Format Support: Based on MPV core engine, VQMP supports nearly all media formats, up to 8K UHD HDR/SDR,
using ffmpeg-based hardware accelerated decoder
HDR Support: HDR to SDR conversion for easy HDR preview on SDR screen
Audio Engine: Multi-channel audio rendering engine, up to 7.1 surround sound
Smart File Opening: Configurable use of last-used timeline position and track controls
Recent Files Manager: Unlimited multi-page recent files list
Timeline Navigation: Fast intuitive timeline navigation, including switchable overlay messages, bookmarks,
and GoTo Manager
Smart Controls: Speed/scale/zoom/pan controls with info overlays
Playlist Manager: Internal and external playlists support
Track Selection: Smart video, audio and subtitle tracks selection
AV Monitor: Advanced AV Monitor with sophisticated overlays and messages, various modes of operation

Previous Page: What is VQMP?

Next Page: Shortcuts Guide

Start Page – Shortcuts Guide

Clicking on VQMP icon or launching vqmp.exe without any arguments in the command line results in Start Page display. It shows handy Main Controls Short Guide and also works as a background for Recent Files List display.

Previous Page: Features

Next Page: Keybindings

Keybindings

VQMP uses a combination of MPV built-in keybindings and custom VideoQ keybindings. Some built-in MPV keybindings are still in use by VQMP, some of them disabled, and some others replaced by VideoQ keybindings.

↓↓↓

↑↑↑

Important Notes

All upper-case keys below mean Shift+key
Dynamic keybindings are valid only while the related mode is active
For developers and advanced users: MPV manual

Previous Page: Shortcuts Guide

Next Page: File Manager

File Manager

File, URL, and Playlist Opening Controls

Key	Action
`Ctrl+o`	launches File Open Dialog, the selected file will replace currently playing file or playlist.
`Ctrl+a`	launches Add File Dialog, the selected file(s) or playlist(s) will be appended to the playlist.
`Ctrl+u`	brings up URL text edit box pop-up. Paste your URL into it.
`Ctrl+R`	re-opens (close and re-open) the same file, e.g. to reveal changes due to external processing.
`Alt+a`	launches Add Subtitles File Dialog, the selected file will be appended to the subtitles list.

Note that for Ctrl+aand Alt+a cases currently playing file will continue to play.

Image Sequence Playback

To open and play a sequence of numbered image files:

Open first any one of the sequence image files using Drag-and-Drop, regular Ctrl+o File Open Dialog, or Ctrl+r Recent File List. This will open just one static image.
Then use Alt+i shortcut to open and play the sequence of all numbered files sharing the selected file folder path and extension.

The default sequence playout frame rate is 24 fps. It can be changed via dynamic Ctrl+f and Ctrl+y keybindings.

Supported frame rates: 1, 10, 23.976, 24, 25, 29.97, 30, 48, 59.94, 60 fps

Supported extensions: bmp, dpx, exr, gif, j2k, jp2, jpg, jpeg, png, psd, tif, tiff, webp

Previous Page: Keybindings

Next Page: Recent Files Manager

Recent Files Manager

Ctrl+r toggles Recent Files List display ON/OFF. Also, this enables all corresponding dynamic bindings.
Strictly speaking, better wording could be 'Recent Sources', because the list includes AV files and URLs.

Recent Files Manager

Recent Files Manager Dynamic Keybindings

Key	Action
`ENTER`,`MBTN_LEFT`	Open the higlighted item from the current list page
`1-9` or `0`	Open the numbered item from the current list page
`UP`,`DOWN`,`WHEEL_UP`,`WHEEL_DOWN`	Move the selection highlight (scroll the list), one item at a time
`PGUP`,`PGDWN`	Scroll the list, one page (10 items) at a time
`DEL`	Delete the highlighted item from the list, and move the selection highlight to next available item
`ESC`	Switches list display OFF

Color Scheme

Handy selected item highlighting color scheme dynamically assigns different colors for:

Video and image files – Cyan
Audio files – Brown
URLs and streaming protocols – Light Blue
Currently non-available resources – Red with warning prefix NOT FOUND:,
e.g. files on the disconnected drive or renamed files

Note: Recent Files Manager and Playlist Manager are mutually exclusive. Thus, if Playlist Files Manager was used, then launch of Recent Files Manager will auto-reduce playlist to just one item - currently playing file.

Previous Page: Recent Files Manager

Next Page: Recent Files Manager Usage Examples

Recent Files Manager Usage Examples

Within the displayed list all file names and URls are replaced by media titles (if available).
Full path to the selected resource is displayed in the VQMP window title bar (small size font).
The selected item highlight color depends on the resource type and availabilty. Within the displayed list all file names and URls are replaced by media titles (if available).

Example 1: The selected video file title is shown in cyan:
Highlighted Video File Title
In Recent Files Manager mode VQMP window title bar shows full path and file name:
Selected item full path

Note that in regular playback mode VQMP window title bar shows only file name, not the full path. If necessary, press F6 to see full path as on-screen message.
File Name and full path

Example 2: The selected URL title is shown in Light Blue:
Highlighted URL title

Note that in URL playback mode VQMP window title bar shows the title, not web address. If necessary, press F6 to see web address as on-screen message.
URL Title and Web address

Example 3: The selected audio file name is shown in Brown:
Highlighted Audio File Name

Example 4: Currently non-available resources are shown in Red:

In Recent Files Manager mode VQMP window title bar shows full path and file name:
Selected item full path

Previous Page: Recent Files Manager

Next Page: Playback Controls

Playback Controls

Basic Playback Controls

Key	Action
`SPACE`, `p`, `MBTN_MID`	Toggle pause/play. Also hide Recent Files List and Playlist overlays
`q`	Quit to watch later: save timeline position and quit
`Q`	Delete watch later timeline position data and quit

Playback Speed Controls

Key	Action
`]`,`Ctrl+Alt+f`	Increase speed: .05, .15, .3, .5, 1, 2, 3, 4, 10, 20
`[`,`Ctrl+Alt+s`	Decrease speed: 20, 10, 4, 3, 2, 1, .5, .3, .15, .05
`{`	Set play direction backward
`}`	Set play direction forward
`Backspace`	Reset normal speed 1 and forward play direction

Audio is mute and audio monitor is disabled for speed values below 0.3 and above 4.
For each new file opened the playback controls are reset to normal speed 1 and forward play direction.

See next 2 sub-sections:

"Video, Audio and Subtitles Tracks (Streams) Selection"

"Working with Subtitles"

Previous Page: Recent Files Manager Usage Examples

Next Page: Tracks (Streams) Selection

Video, Audio and Subtitles Tracks Selection

Key	Action
`F8`,`v`,`a`,`s`	Show tracks list
`v`	Cycle through video tracks (streams)
`a`	Cycle through audio tracks (streams)
`s`	Cycle through subtitles tracks
`J`	Cycle subtitles tracks backwards (MPV built-in keybinding)
`Ctrl+Alt+RIGHT`	Pause and go to next subtitle position
`Ctrl+Alt+LEFT`	Pause and go to previous subtitle position

On-screen list displays each track language code and optionally some other detals, thus providing for easy track selection with visual feedback.

Previous Page: Playback Controls

Next Page: Working with Subtitles

Working with Subtitles

Key	Action
`S`	Cycle subtitles scale (relative font size)
`r`	Move subtitles up
`R`	Move subtitles down
`Ctrl+Alt+RIGHT`	Pause and go to next subtitle position
`Ctrl+Alt+LEFT`	Pause and go to previous subtitle position

Subtitles scale (relative font size) list:
1.(default), 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, .5, .6, .7, .8, .9

Going to previous/next pre-fetched subtitle position also jumps to matching video & audio timeline positions.

Previous Page: Tracks (Streams) Selection

Next Page: On-screen Messages

On-screen Messages

Cycle OSD Levels 0,1,2,3

Key	Action
`t`, `MBTN_RIGHT`	Cycle osd-levels: 0, 1, 2 (default), 3

OSD Levels Explained

OSD Level 0

Time-line messages OFF (thus showing "clean video image"). ~1s long pop-up - only to inform user. Selection of osd-level 0 means that not only the topmost line, but nearly all other osd messages will be hidden.

OSD Level 1

Current timecode / duration timecode (minimalistic mode)

OSD Level 2 (Default)

Maximum of current and full duration details:

On pauses: timecodes, time positions in s.ms, frame numbers
On play: time positions in s.ms are hidden, video and audio bitrates added

OSD Level 3

Medium details level. As level 2, but without bitrate information, frame numbers - only on pause

Note: Levels 1, 2, 3 always show play / pause / seek / wait symbol and time position in %. For non-unity speeds, speed info is inserted after timecode values.

After each change of level the 2nd (and optionally the 3rd) message lines appears for short time. It shows: AV container, frame size, frame rate, and other AV parameters.

Important: VQMP scripts may override the user selection by forcing the particular osd-level - 1, 2 or 3.

Previous Page: Working with Subtitles

Next Page: Sound Volume

Sound Volume

VQMP provides built-in audio volume controls with visual feedback.

Key	Action
`m`, `Alt+MBTN_MID`	Toggle mute ON/OFF
`9`, `Ctrl+WHEEL_UP`	Increase volume
`0`, `Ctrl+WHEEL_DOWN`	Decrease volume
`=`, `Shift+MBTN_MID`	Reset all user controls, including volume

Full volume control range: 0% .. 130%. 0% means mute.
Note: Volume controls do not affect any audio analyzers/indicators, e.g. Audio Level Meter.
Default 50% volume value (mute OFF) is reset for each new file opened.
Any change of volume control invokes the corresponding text message and OSC Volume Bar overlay.

Previous Page: On-screen Messages

Next Page: AV Monitor

AV Monitor Mode Controls

For video files with internal or external audio streams

Key	Action
`Ctrl+MBTN_MID`	Toggle AV Monitor ON/OFF
`Alt+0`	Switch AV Monitor ON
`Alt`+ `1`,`2`,`3`,`4`	Select/Preselect AV Monitor Mode 1,2,3,4
`M`	Cycle thru AV Monitor Modes 1,2,3,4
`ESC`	(dynamic keybinding) Switch AV Monitor OFF

For video files without internal or external audio streams

In such case only Mode 1 (Video Monitor) is available.

Key	Action
`Ctrl+MBTN_MID`	Toggle AV Monitor ON/OFF
`Alt+0`	Switch AV Monitor ON
`ESC`	(dynamic keybinding) Switch AV Monitor OFF

For audio files Audio Monitor is always ON

Switch between 2 modes:

Key	Action
`M`, `Ctrl+MBTN_MID`	Toggle between Modes 3a and 4a

Mode 3a - Advanced Audio Monitor (default)
Mode 4a - Large Audio Waveform Monitor

AV Monitor Modes and Tools used

Multi-channel Audio Level Meter:

Audio Level Meter is available in all 4 Modes - 1,2,3,4

Video tools used in Mode 1:

UV Vectorscope, RGB Histograms, YUV Waveforms, RGB Waveforms

Audio tools available in Modes 2,3,4:

Audio Waveform Monitor, Vectorscope, Frequency Spectrum, EBU R128 Monitor

Learn more about AV Monitor modes in 2 following sub-sections:
- AV Monitor Modes Explained
- Audio Monitor Explained

Previous Page: Sound Volume

Next Page: AV Monitor Modes Explained

AV Monitor Modes Explained

Press Alt+ 1 | 2 | 3 | 4 to pre-select or select the corresponding AV Monitor Mode.

Mode 1

Video tools: UV Vectorscope, RGB Histograms, YUV Waveforms, RGB Waveforms. Audio tools: Level Meter

AV Monitor Mode 1

Mode 2

Audio tools: VectorScope, Frequency Spectrum, EBU R128 Monitor Readout, Waveform Monitor, Level Meter

AV Monitor Mode 2

Mode 3

Audio tools: VectorScope, EBU R128 Monitor, Waveform Monitor, Level Meter

AV Monitor Mode 3

Mode 4

Semi-transparent Audio Level Meter

AV Monitor Mode 4

Previous Page: AV Monitor

Next Page: Audio Monitor Modes Explained

Audio Monitor Modes Explained

For audio files Audio Monitor is always enabled.
Press M or Ctrl+MBTN_MID to switch between 2 modes: 3a and 4a.

Audio Monitor Mode 3a

This mode is enabled by default for each new audio file opened.
Audio tools: VectorScope, Frequency Spectrum, EBU R128 Monitor, Waveform Monitor overlay, Level Meter

Audio Monitor Mode 3a

Audio Monitor Mode 4a

Audio tools: Large Waveform Monitor

Audio Monitor Mode 4a

Previous Page: On-screen Messages

Next Page: Timeline Navigation

Timeline Navigation

There are several ways to control the timeline position.They can be used separately or together.

Navigation Methods

GoTo Manager - Jump to specific timecodes
Bookmarks - Store and recall timeline positions
Relative Timeline Position - Direct timeline control and frame-stepping
Chapters - Navigate through chapter markers
Loop - Set A-B loop points

See the following sub-sections for detailed descriptions of each navigation method.

Previous Page: Audio Monitor Explained

Next Page: GoTo Manager

GoTo Manager

GoTo Manager Controls:

Key	Action
`g`	Toggle editable "GoTo" timecode string overlay
`b`	Store current timeline position as GoTo record (volatile bookmark)

GoTo Manager dynamic keybindings:

Key	Action
`LEFT`, `RIGHT`	Move to previous/next digit position
`0 .. 9`	Enter current digit and move right to next digit
`BS`	Clear current digit (set 0), then go left to previous digit
`UP`, `DOWN`	Scroll through the GoTo history (volatile bookmarks)
`ESC`	Cancel current timecode string editing and remove the overlay
`ENTER`	Seek to the displayed timeline position

GoTo Manager history list size is practically unlimited, and it can be used for setting up very handy editable volatile bookmarks, valid across multiple media files, e.g. Recent Files, whilst the VQMP is running.

Previous Page: Timeline Navigation

Next Page: Bookmarks

Bookmarks

Bookmark Controls:

User can store and recall up to 4 permanent bookmarks (file path and timeline position) stored in bookmarks.json file.

Key	Action
`Ctrl+Alt+1,2,3,4`	Set (store filename and current timecode) bookmark #1,#2,#3,#4
`Ctrl+1,2,3,4`	Recall (seek stored filename and position) bookmark #1,#2,#3,#4
`Ctrl+Alt+0`	Peek the bookmarks list, i.e. filenames and positions in 4 bookmark slots
`Shift+Ctrl+BS`	Set one revert-seek mark
`Shift+BS`	Revert seek to the marked position

The revert-seek mark is the single volatile bookmark, i.e. the timeline position for revert-seek, valid only for the currently playing file.

Previous Page: GoTo Manager

Next Page: Relative Timeline Position

Relative Timeline Position

Key	Action
`WHEEL_UP`	Pause and frame-step forward
`.`	Pause and frame-step forward (MPV built-in control)
`WHEEL_DOWN`	Pause and frame-back-step
`,`	Pause and frame-back-step (MPV built-in control)
`Shift+BS`	Revert seek to the marked position
`TAB`	Pause and seek +1s
`Shift+TAB`	Pause and seek -1s
`Ctrl+TAB`	Pause and seek +10s
`Ctrl+Shift+TAB`	Pause and seek -10s
`PGUP`	Pause and seek +60s
`PGDWN`	Pause and seek -60s
`Shift+PGUP`	Pause and seek +600s
`Shift+PGDWN`	Pause and seek -600s

Alternatively, use the slider strip within the OSC Bar.
Note that the slider precision is limited, especially for long duration files.

Previous Page: Bookmarks

Next Page: Chapters

Chapters

Chapter navigation controls:

Key	Action
`WHEEL_UP`	Pause and frame-step forward
`.`	Pause and frame-step forward (MPV built-in control)

Ctrl+PGUP Next chapter
Ctrl+PGDWN Previous chapter

Legacy MPV bindings (may or may not be removed in the future):

@ Next chapter
! Previous chapter

Click on highlighted double-arrow symbols within the OSC Bar to see chapter list overlay and go to the next/previous item.

If currently playing file metadata include chapter list, then these symbols are activated (high-lighted).

Previous Page: Relative Timeline Position

Next Page: Loop

Loop

Loop controls:

Key	Action
`l`	Set / clear A-B loop points (Set A / Set B / Clear AB)
`L`	Toggle file loop playout mode: "inf" (default mode) / "no" (play once)

Note that in playlist mode selecting "inf" prevents jumping to next playlist file after previous file ends.

Previous Page: Chapters

Next Page: Playlist Manager

Playlist Manager

Key	Action
`Ctrl+p`	Switches ON short time display of playlist

If media titles are available they are shown as playlist items, otherwise file names or URLs are displayed.

While the playlist is displayed, the following controls are active:

Key	Action
`WHEEL_UP`,`WHEEL_DOWN`,`UP`,`DOWN`
	- if no item selected: Scroll the list
	- for the selected item: Move its position in the list
`MBTN_RIGHT`,`LEFT`,`RIGHT`	Modify the selection type
`MBTN_LEFT`,`ENTER`	Play the item listed at the current cursor position
`DEL`	Removes the hovered item from the playlist

While the playlist is hidden, the following playout controls are active:

Key	Action
`ENTER`	Play next item in the playlist
`<`	Play previous item in the playlist
`>`	Play next item in the playlist
`Ctrl+,`	Play previous item in the playlist
`Ctrl+.`	Play next item in the playlist

If the arrow symbols in the upper-left corner of OSC Bar are highlighted it means that playlist mode is active.
Click on the corresponding symbol to play next/previous item of the playlist.

PlayList OFF Arrow symbols OFF, playlist count = 1

PlayList ON Arrow symbols ON, playlist count > 1

Note that Recent Files Manager and Playlist Manager are mutually exclusive.
Thus, if Playlist Files Manager was used, the launch of Recent Files Manager will auto-reduce playlist to just one item - currently selected file.

Previous Page: Loop

Next Page: Working with Playlist

Working with Playlists

The easiest way to create new playlist:
Select multiple media files and drag-and-drop them into VQMP window.
In such case VQMP creates new playlist, thus replacing the current list.

Key	Action
`Ctrl+a`	Launches Add File Dialog, the selected file(s) will be appended to the currently opened playlist
`Ctrl+l`	VQMP will search the folder containing the currently playing file
	and append all files of all supported formats to the playlist
`Ctrl+BS`	Clears the playlist, except the currently playing file, i.e. playlist is reduced to the currently playing file
`Ctrl+DEL`	Deletes playlist completely and forces VQMP to display start page
`Ctrl+P`	Saves playlist in .m3u UTF8 format

At any moment press Ctrl+BS to delete temporary playlist and start detailed analysis of currenty playing file.
Note that playlist saving location is fixed: ".\playlists"; file name is created automatically starting with ISO timestamp (no file name edit dialog).

Playlist Scan Mode

Besides the regular playlist mode there is a special "Playlist Scan Mode". By default it is switched OFF.

In this mode each file is playing only for first 12 seconds, AV Monitor and text messages show its video and audio parameters.

Key	Action
`Alt+v`	Switch Playlist Scan Mode ON
`Ctrl+v`	Switch Playlist Scan Mode OFF

Fast scan mode is handy for fast preview of large number of media files.
For example, to preview all files in the folder press Ctrl+l (to create temporary volatile playlist), then Alt+v to start playout in the fast scan mode.
At any moment press Ctrl+BS to delete temporary playlist and start detailed analysis of currenty playing file.

Previous Page: Playlist Manager

Next Page: Window Controls

Window Controls

General Window Controls

By default, active video image fits the VQMP window boundaries
Thus, window size affects scaling and zoom factors with reference to the original video frame size.

Key	Action
`f`,`MBTN_LEFT_DBL`	Toggle full screen mode
`ESC`	Switch full screen mode OFF
`T`,`MBTN_LEFT_DBL`	Toggle MPV window staying on top of other windows
`Ctrl+A`	Cycle the rendered video image aspect ratios:
	"16:9","1.85","2.0","2.2","2.35","2.39","4:3","-1","no".
	"-1" means the container/stream metadata aspect ratio
	"no" means that ratio = video w/h (aka "square pixels mode")
`Ctrl+Alt+a`	Toggle the AR metadata source: container/stream
`Ctrl+N`	Create new VQMP instance with empty playlist (start page)
`Ctrl+D`	Duplicate current VQMP instance as new window,
	playing the same file at the same time position.
`F9`	Brings up on-screen message showing window size,
	video size, zoom value, and other related parameters

See the following sub-sections for more controls.

Previous Page: Working with Playlists

Next Page: Window Size

Window Size

Except full screen mode, active video image always fits the VQMP window boundaries
Thus, window size affects scaling and zoom factor with reference to the original video frame size.

You can use mouse to drag the VQMP window edges ("easy" Windows OS window size/position change method) without any restrictions. However, in many cases this is not recommended because in this mode it is difficult to control and monitor scaling and zoom values.

Key	Action
`Shift+WHEEL_UP`,`Shift+Up`	Enlarge window (max size depends on the screen size)
`Shift+WHEEL_DOWN`,`Shift+Down`	Shrink window (min window height = 480 pixels)
`w`,`W`,`Ctrl+w`	Reset window size to auto-calculated “optimal” values
`F9`	Brings up on-screen message showing window size,
	video size, zoom value, and other related parameters

Previous Page: Window Controls

Next Page: Zoom and Pan Controls

Zoom and Pan Controls

The controls listed below affect only the active video image, VQMP window size remains unchanged.

The "smart limits" of the available zoom factor and pan controls depend on video frame size and current window size. E.g., for zoom factor 1:1 both pan controls are blocked/disabled.

Key	Action
`Alt+WHEEL_UP`,`Alt+Up`	Increase zoom factor: 1:1, 2:1, 4:1, 8:1, 16:1
`Alt+WHEEL_DOWN`,`Alt+Down`	Decrease zoom factor: 16:1, 8:1, 4:1, 2:1, 1:1
`Ctrl+LEFT`,`Ctrl+RIGHT`	Move (H pan) visible image behind the window
`Ctrl+UP`,`Ctrl+DOWN`	Move (V pan) visible image behind the window
`z`,`Z`,`Ctrl+z`	Reset video zoom and pan controls to default 1:1 and 0,0 values

Typically users adjust zoom and pan controls as needed, – simply watching zoomed image area aka ROI.
However, in some cases it is desirable to focus on the particular ROI defined in terms of its x,y position.
In such case real time on-screen messages may help:

Zoom and Pan parameters 1

Like many other osd messages they disappear in few seconds after the last change of control values.

Note that zoom scaling filter is always centered on the center of the original image, i.e. x=50% of image width and y=50% of image height. H and V pan controls shift this central point; on-screen messages merely report this shift, the displayed pan % x,y values always refer to the original image width and height.

It is advisable to think about VQMP window as "viewport" limiting visible part of the underlying scaled and shifted image.
The available pan values range is limited to +/-50%. For any zoom factor greater than 1:1, pan% x=+50 and pan% y=+50 mean that upper-left corner of zoomed and shifted image is co-located with the upper-left corner of VQMP window.

Previous Page: Window Size

Next Page: Video Image Processing

Video Image Processing Controls

There are 3 set of controls aimed to:

More accurate color space conversion

Viewing comfort improvement via color correction

Correction of image orientation issues - rotation, flip and tumble

See 3 corresponding sub-sections for more details.

Previous Page: Zoom and Pan

Next Page: Color Space Conversion

Color Space Conversion

Professional color space conversion controls for accurate color representation and measurements.

Color Matrix Selection

Key	Action
`Alt+s`	Select (force) BT.601 (SD) color matrix
`Alt+h`	Select (force) BT.709 (HD) color matrix
`Alt+u`	Select (force) BT.2020 (UHD) color matrix

Video Data Range

Key	Action
`Alt+f`	Select (force) full (aka PC) video data range
`Alt+n`	Select (force) narrow (aka limited) video data range

By default, color matrix, video data range and dynamic range mode (SDR, HDR-PQ, HDR-HLG) selection is automatic - based on file metadata and video frame size.

Previous Page: Video Image Processing

Next Page: Color Correction

Color Correction

The controls listed below are built-in MPV keybinding, they serve only for subjective image quality enhancement. Opening of new video source automatically reset all these controls to default values.

Key	Action
`1`	Decrease contrast
`2`	Increase contrast
`3`	Decrease brightness
`4`	Increase brightness
`5`	Decrease gamma
`6`	Increase gamma
`7`	Decrease color saturation
`8`	Increase color saturation

=, Shift+MBTN_MID Reset all user controls, including image colors.
Note: Image color controls do not affect any video analyzers/indicators, e.g. Video Waveform Monitor.

Any control value change invokes the corresponding text message and large OSC Bar overlays

The ranges for all control values are +/-100, default: 0. MPV controls are very strong, e.g. brightness -100 means solid black, and saturation -100 means shades of gray. Press = if in doubt.

Previous Page: Color Space Conversion

Next Page: Rotation, Flip and Tumble

Image Rotation, Flip and Tumble

Key	Action
`Alt+9`	Cycle image rotation: 90, 180, 270, 0 degrees
`Alt+H`	Horizontal flip
`Alt+V`	Vertical flip
`Alt+x`	Disable all 3 rotation and flip filters, shown above

Original image orientation is reset for each new file opened.
Any change of image orientation invokes the corresponding osd text message.

Previous Page: Color Correction

Next Page: Misc Controls

Misc Controls

Key	Action
`P`	Short time display of timeline progress bar
`i`	Short time display of status info pages (aka "stats")
`I`	Toggle permanent display of status info pages (aka "stats")
`1`,`2`,`3`,`4`	Browse the stats info pages
`F6`	Short time display of path + filename or URL
`F7`	Short time display of media-title
`F8`	Short time display of video/audio/sub tracks list
`F9`	Short time display of window/zoom info
`=`,`Shift+MBTN_MID`	Reset all user controls
`Ctrl+s`	Save scaled video screenshot with subtitles and OSD
`Ctrl+S`	Save unscaled video screenshot without subtitles and OSD
`F1`	Open VQMP help document in .CHM format
`O`	Cycle OSC visibility: auto (default), always, never

Note: In "auto" mode OSC (On-screen Controller) bar appears when mouse cursor is in the bottom 25% of the image.

Previous Page: Rotation, Flip and Tumble

First Page: What is VQMP?