0

I have three grayscale videos, representing the red, green, and blue channels from a video. I extracted them using the extractplanes filter, and sent them through different pipelines.

Now I would like to combine them again. But while extractplanes is working perfectly, mergeplanes is not. My initial attempt was this:

[r][g][b] mergeplanes=0x001020 [output]

This interprets my RGB channels as YUV, which is not what I want. My next attempt was this:

[r][g][b] mergeplanes=0x001020:rgb24 [output]

But according to the error message, Only planar formats with more than one component are supported. (Same for all other RGB and RGBA pixel formats I tried.)

Is there another way to put these channels back together? Or some way to convince mergeplanes to output RGB?

0

As the error message says, mergeplanes can only output in a planar format: that is, all the first-component values together, then all the second-component values together, and so on. FFMPEG's RGB formats are non-planar: they group the values by pixel, not by component. So mergeplanes can't work with them.

However, FFMPEG does support the GBRP (Green-Blue-Red Planar) format. So you can have mergeplanes export to that, then convert to RGB from there. Just change the order of the components.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.