If when playing a certain video file the picture and audio are slightly out of sync, first check the resolution of the video file and your computer's hardware specs.
Videos with relatively high resolutions, such as 1280x720 for example, may not play as smoothly on less powerful computers, sometimes resulting in a slight misalignment of the audio and video streams.
Also, GOM Media Player includes a feature called "Quick Play Mode" which can improve playback for choppy / misaligned video files. Essentially this function disables the built-in Gretech Video Filter to allow the use of external codecs.
Note that while Quick Play Mode may improve playback for the file on certain computers, on other computers it may disable codecs that are necessary to playback the file at all. If after enabling Quick Play Mode your file won't play at all, just disable it again.
To enable Quick Play Mode, follow the steps below.
1. Launch GOM Media Player
2. Press [F5] to open the Preferences window
3. Select "Filter" from the list on the left
4. Click on the "Disable Filters" tab
5. Check the box next to "Enable Quick Play Mode"
6. Close the Preferences window
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