first right click your video
and click properties
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then make the settings like this
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nowr right click the video again and hit
Video Event/Pan Crop
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then adjust the effect so theres no longer a black line on the edge of your video
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you can save the size you make and then just select that for every video in the future. it's common for a pvr recording to have a black outline somewhere.
hope this helped. any other questions, feel free to ask. Also have a few good links on youtube to watch to learn some tricks/effects etc. Just hit me up.