If the speakers are on the bottom facing down, you could flip the laptop over so they face you. Although hard to watch the video that way. I tend to use usb powered speakers that I plug into the headphone jack. You probably just need to adjust the levels.
$ alsamixer -c 0
$ speaker-test -c 2 -l 4
If the speakers are on the bottom you can sometimes prop it up on some bottle caps to keep the sound less muffled.