Video Lan
From:     https://wiki.videolan.org/VSG:Video/



VSG:Video
Contents
1Video Playback Issue
1.1Lack of Video
1.2 Lack of Video or other issues on some files
1.3 Poor Quality or Strange Video
1.4 Video is good but...
1.5 Video displays first frames and black/grey only
2 How do I...
2.1Modify the video output?
2.2 Adjust brightness or contrast?
2.3 Set file specific brightness or contrast?
2.4 Set the default deinterlace method?
2.5 Jump to certain time
2.6 Take a snapshot of a video

Video Playback Issue What issues are you experiencing with VLC video playback?
Lack of Video VLC does not play video at all. Go! If you have no video for some type of files only, then that means you have no codecs for this type. Try changing video output and check another file. If you have no video for some type of files or all of them, you can try to change the video ouput. Go to Tools > Preferences > Video and in the Display section, try another Ouput. Sometimes, you have to deactivate the Accelerated video output (Overlay) too. You can also check against the non-supported codec.
Lack of Video or other issues on some files VLC does not play video only on some files. Go!
Poor Quality or Strange Video VLC can partially play video, but its playback is distorted, of poor quality... Go! Poor Quality or Strange Video What are the problems with the playback? Some video formats are incompatible with some versions of VLC. From here on out, we will assume the file which VLC cannot play back is supported by your version of VLC. Visual errors Video output is black, white or garbled; or you see green, blue, or red lines on your video. Go! Video is purple (a.k.a. the Smurf effect) Why is my video purple in VLC? Go! Video is distorted The video runs but the picture is distorted. Go!
Video is good but... Your video is too dark, choppy... Go! VSG:Video:GoodBut Video is choppy VLC can partially play video, but its playback is choppy. Go! Video is too dark Video is appearing too dark on VLC. Go! Video colors are washed out This is a NVIDIA issue on Windows. Go!
Video displays first frames and black/grey only Does not really play Go! VSG:Video:Slow Video displays first frames and black/grey only This is the symptom of a slow decoding, and this is especially the case with high bitrate H264 or HEVC. If you're using VLC < 3.0, you need turn on hardware acceleration. Preferences -> Input Codecs -> Hardware Acceleration. Is your Graphic card able to accelerate decoding ? For 4K H264 Quick Sync 4 (Intel Broadwell ~) PureVideo HD 5 cards (Nvidia GT 520 ~) UVD 5.0 cards (AMD Radeon R9 ~) For HEVC Quick Sync 5 (Intel Skylake ~) PureVideo HD 7 cards (Nvidia GTX 950 ~, or GTX 750 SE) UVD 6.0 cards (AMD Radeon Rx300 ~) For HEVC 10bit Quick Sync 6 (Intel Kaby Lake ~) PureVideo HD 7 cards (Nvidia GTX 950 ~, or GTX 750 SE) UVD 6.0 Fiji/Carrizo cards (AMD Radeon Rx400 ~) All information per chip https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video https://en.wikipedia.org/wiki/Unified_Video_Decoder https://en.wikipedia.org/wiki/Nvidia_PureVideo
How do I...
Modify the video output? How do I modify video output? Go! Modify Video Output (Redirected from VSG:Video:HowTo:ModifyVideoOutput) This page describes how to modify your video output. Other "how to" pages If you have no video for some type of files or all of them, you can try to change the video ouput. Go to Tools > Preferences > Video and in the Display section, try another Ouput. Sometimes, you have to deactivate the Accelerated video output (Overlay) too.
Adjust brightness or contrast? How do I adjust brightness or contrast? Go! VLC HowTo/Adjust image settings (Redirected from VSG:Video:Contrast) This page describes how to adjust image settings including brightness and contrast. Other "how to" pages See also: Documentation:Video and Audio Filters Contents 1 Graphical 1.1 Qt Interface 1.2 OS X Interface 2 Command-line 2.1 Permanent changes
Graphical Graphical approaches are the easiest but also the most variable because you have to look in different places depending on your interface. What this approach will do is globally change the hue, brightness, contrast, saturation or gamma for every video you play in VLC, perhaps for color-correction purposes. If you want to play a single video with different image settings, you should look at the command-line approach. Older versions of VLC required different steps (VLC versions <= 0.9.0 used wxWidgets Interface). Modern VLC installations for Windows and Linux use Qt, Mac installations use the OS X interface.
Qt Interface
  1. In the menu bar, select "Tools" and then "Effects and Filters".
  2. Select the "Video Effects" tab and then "Essential" subtab.
  3. Tick the "Image adjust" checkbox and move the slider for the setting you want to change.
  4. Hue, Brightness, Contrast, Saturation, and Gamma may be adjusted.
Changes take effect immediately for every video.
OS X Interface
  1. Go to the "Extended controls" panel.
  2. Select the "Video" section and then "Adjust Image" subtab.
  3. Tick the "Enable" checkbox and move the slider for the setting you want to change.
  4. Hue, Contrast, Brightness, Saturation, Gamma, Opaqueness may be adjusted.

Command-line A command-line approach will run VLC with adjusted hue, brightness, contrast, saturation or gamma for one session (the adjustments will not be preserved later). To learn how to get a command-line, see command-line interface. The module you will be working with is adjust. As given by vlc --module adjust: --contrast Image contrast (0-2) --brightness Image brightness (0-2) --hue Image hue (-180..180) --saturation Image saturation (0-3) --gamma Image gamma (0-10) --brightness-threshold, --no-brightness-threshold Brightness threshold (default disabled) The defaults are 1.0 for contrast and brightness, 0 for hue, 1.5 for saturation, 1 for gamma. You can make a video (or still image) 10% brighter with: vlc --video-filter adjust --brightness 1.1 and make a video (or still image) black-and-white with: vlc --video-filter adjust --saturation 0 And this works too: vlc --brightness 1.1 vlc --saturation 0 Permanent changes You cannot save your preference for adjusted image settings with VLC (VLC doesn't seem to have any field that "remembers" your preferences). You can, potentially, stream the video through a filter using the above method to an output file, and overwrite the original. In other words, to make foo.ogv 10% brighter you adjust foo.ogv: vlc --video-filter adjust --brightness 1.1 foo.ogv And then save the result into foo.ogv.tmp (sorry, I don't have a command line for this), saving over foo.ogv. Now when you play foo.ogv the video will be brighter.
Set file specific brightness or contrast? How do I set file specific brightness or contrast? Go!
Set the default deinterlace method? How do I set the default deinterlace method? Go!
Jump to certain time Can I jump to certain time? Go!
Take a snapshot of a video Take a screenshot of a running video. Go!