The Matroska format, or MKV, is a container for video and audio that allows more freedom than Microsoft's AVI or Apple's QuickTime MOV. Menus can be encased in the container, along with chapters and metadata tags. MKV, like all audio/video formats, can have syncing issues between the audio and video. Remedying this is easy using common and free multimedia viewing programs.
- Skill level:
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Things you need
- MKV-compatible software
Open the unsynced MKV file using VLC player.
Press the "J" key on the keyboard to decrease the delay of the audio and the "K" key to increase the delay.
Watch the video while pressing the keys until the video and audio become synced up.
Open the unsynced MKV file with VirtualDubMod.
Select "Stream List" from the "Streams" menu.
Right-click on the source audio file and select "Interleaving."
Adjust the audio delay in milliseconds under the "Audio Skew Correction" option. Click the "OK" button to exit the interleaving options, and "OK" again to exit the stream list.
Press the "Play" button to make sure the video is now synced. If not, go back to the interleaving options and increase or decrease the delay depending on how unsynced the video is.
Save the video as a new MKV file when finished. Select "Save As" from the "File" menu. Under "Save As Type," select "MKV." Name the file and click the "Save" button.
Open the unsynced MKV file with MediaPlayer Classic.
Select "Options" from the "View" menu.
Click "Audio Switcher" under the "Internal Filters" category.
Click the "Audio Time Shift" check box and enter in milliseconds the amount of time the audio should be shifted to fix the sync. Click the "OK" button to exit the options and play the MKV video.
Tips and warnings
- If the video goes in and out of sync at different times, the audio might need to be stretched or the frame rate changed.
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