Glowing white egg shaped object caught on DSLR video flying below cumulus clouds at extremely high speed

On Sep 9, 2023 around 500-530pm, I was recording a video of beautiful cumulus clouds in the sky. My camera is a Canon 5D Mark IV and the lens is a Canon EF 70-200mm 1:2.8 L IS USM Lens. I recorded for 20-30 minutes. The next day, I watched the video and saw a glowing white egg-shaped object fly across the video at extremely high speed on a linear path. The glowing white egg-shaped object had no fire-trail, no wings, and at the point of entry into the camera frame, it appeared "ghost-like" then transformed into a bright glowing white object. The light appeared to emit from the object versus reflection of sunlight. This object was flying below the cumulus clouds. The camera was mounted on a tripod pointing straight up to the sky on top of my patio roof. The entire time, I was standing inside the house about 5-10 feet away while the camera was capturing video. I placed the camera on top of my patio roof via a window from my house. The sky was filled with clouds with patches of blue sky during day light. The video quality is very good and allows for zoom-in and video speed reduction to clearly see the object. In the video, it appears to be at two places at once as it travels on a linear path but this might be an artifact from the video encoding since it was traveling extremely fast. I need to double check the video metadata to confirm if this occurred Sep 9 (either it was Sep 9 or Sep10)