Video won't upload but phone is HOT and battery dies fast

I was trying to upload a 25 sec video to FB and it wouldn't upload so I retried a few times. Now the video(s) still won't upload with OR without wi-fi and my phone is HOT like it's trying to upload and my battery died overnight while sitting idle with a full charge when I went to sleep. How do I stop the phone from trying to upload the video(s)..??