Black borders appear on both sides of the video.

[Eun young]

Hello, I have a question, so I'm posting it.
When I render with MP4, black borders appear on both sides of the video. I put a white solid layer on the background, but I don't know why black comes out. If you know the answer, please help me.

[Jose Panadero]

Could you share a screen. capture of your composition panel and another one for the video player when playing the video? Also we need to know what are your composition settings.

[Mylenium · Accepted solution]

Most likely you picked an encoding preset that is not compatible with your composition size and/ or the comp size is not correct to begin with. For MPEG encoding all dimensions must be multiples of two and odd values can cause stretching and padding. Similarly, messing up the pixel aspect ratio can of course introduce bars on the side. Check these things.

Mylenium

[Eun young]

Perhaps it is a problem caused by not setting the size of the composition as a multiple of 2, as you told me. I'll take that into consideration and change it. Thank you!

[Rick Gerard]

I would bet that you have a custom composition frame size and you are looking at the rendered video in some kind of media player. There are standard acceptable frame sizes for all video formats used to share or broadcast video. The frame size must fit one of those standards and a video frame must always be an even number of pixels high and wide because color compression always uses blocks of 4 pixels.