When I record video using the v1 of the Rasp Pi Noir camera the first few frames/second have a very high exposure (very bright) and then it settles down to a reasonable exposure setting. Because the videos are taken throughout the day I think I need to rely on auto exposure. I'm looking for a way to avoid having these very bright/washed out frames at the beginning. The command I'm using to capture the video is
raspivid -o test.h264 -t 200000 -fps 2 -w 1280 -h 720
I use MP4Box to make the video into an MP4 file. If it isn't possible to avoid capturing these washed-out frames is there a way to trim them out after capture?