У вашего броузера проблема в совместимости с HTML5
Here's a trick to reduce rolling shutter problems on sony a6300 and 6500 in 4k. Just use a wider lens and zoom with ClearImage at 2.0X. There's still some rolling shutter, but the gelly effect is very diminished. You can also fix the roller shutter effect in post whit rolling shutter repair plugins included in most editing software.