videos by task scheduling

I try to upload 3-5 videos per week, others upload 2-4 videos PER DAY! I am wondering if you upload not as frequently then youtube sees your channel as "inactive" and positions it at the bottom of related titles/topics? What if you miss your schedule to upload a video? Does it really hurt your...

so .. does anyone know a software that can make many videos by task scheduling ? i have about 300 audio files that i want to transform them into 300 videos ( each video contains 1 audio with one photo background) and i cant make them one by one. any idea ?