Clarification needed on yt-dlp video selection query

[luke-han]

First of all, thanks for sharing this project.

I'm having some difficulty understanding the rationale behind the selection of wv / w in the video query. Could you please explain how to choose this specific format? Additionally, I'm interested in learning more about the choice to specify the avc1 codec if self.specify_codec is True.

video2dataset/video2dataset/data_reader.py

Lines 185 to 189 in 28e7d1c

	video_format_string = (
	f"wv*[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}/"
	f"w[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}/"
	f"bv/b[ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}"
	)