Longer videos have some glitches and bad video quality

[atifwaqar]

For large amount of files (i.e. 651 images), the video sequence breaks and the video quality also drops by a lot. Attached is a video made by vid-proc... https://drive.google.com/file/d/1kSy1_Zfq6sYnJsHpCKoygGy_03Guk0fw/view?usp=sharing

Is this a known limitation of video encoder? or is it a bug?