Generally, an MP4 for a 20-30 minute episode should be between 200MB and 500MB. If your file is significantly smaller or larger, double-check the source for potential malware or poor compression.
The AAC/MP3 audio track is clear, with well-balanced dialogue and background music. There is no noticeable syncing issue between the audio and video. Content & Pacing Download JiaoZS2 EP08 mp4
The MP4 format provides a good balance between file size and clarity. The resolution (likely 720p or 1080p) is sharp enough for mobile and desktop viewing without significant artifacting in high-motion scenes. Generally, an MP4 for a 20-30 minute episode