Discard MediaCodec output after encoding

I am using MediaCodec in a Camera2 app and I have a use case of testing it by running recording for a day. I want the encode the video but I want it to be discarded just as soon as it is done so no storage is used. Something like routing the MediaCodec output to dev/null would be best if that is possible.

Any kind of hack also would do, just that the encoding of the video should be going on but not saved.