The current advancement of vlogs in YouTube channel has challenged lecturers to make use of its potential for students' speaking enhancement. This research was aimed to investigate students' speaking ability seen from their video projects. These video projects were vlogs made by the first semester students of English language education department academic year 2019/2020 of STKIP Muhammadiyah Muara Bungo as the assignment in Basic Spoken English class. Descriptive quantitative research was used in order to investigate the improvement of students' speaking ability. There were 27 vlogs that became the data for this research. They were from three different assignments from nine students who were categorized from three different level of English proficiency (high, average, and low). Scoring rubric for speaking proposed by Brown and Abeywickrama was used. The result showed that the students spoke confidently. However, their speaking ability was varied; some students had an improvement whereas others did not. Mastering grammar and vocabulary became the most influencing factors in the improvement of the speaking ability based on the data gathered. It means that the use of vlog as the video project assignment is more effective if the students master in grammar as well as/and have enough vocabulary related to the topic discussed, so that their speaking ability improves. [This paper was published in "Advances in Social Science, Education and Humanities Research, Volume 539" (p47-50). Atlantis Press, 2021.]