Wow Ufuoma 😃 Thanks for reaching out 👏. Please let me have a sample of what u meant by four bar mechanism. Do u mean two cranks two shaft mechanism? Send to my WhatsApp number, you can find it on my "about info". You also might wanna check this out 👇🏽 👇🏽 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-A2LGztjXCkc.html
Not my camera, may be your phone or your youtube view settings. Increase the quality in your settings. You can review other comments, no one had issues viewing it. 👍🏼