Why are there different file sizes for identical resolutions (FYD)?

DVDVideoSoft forums DVDVideoSoft forums YouTube software Why are there different file sizes for identical resolutions (FYD)?

This topic contains 1 reply, has 2 voices, and was last updated by Nikky Nikky 2 years, 2 months ago.

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  • #10454

    Tegaru
    Member
    In the Free YouTube Download, you can choose two different options when you downloading videos in HD. Which means, you have two options for 720p, two for 1080p... The top option produces a file size which is almost double the size of the bottom option. For a specific video in MP4 format, it shows "~343.5Mb" as file size for 720p, and then another option with "614Mb", also 720p.
    What's the difference between these two options? Why is the file so much larger when choosing the top option?

    #51698
    Nikky
    Nikky
    Moderator
    Hi Tegaru!

    Now YouTube streams video and audio separately and the website player combines them on the fly. Earlier YouTube stores them together. Free YouTube Download offers you both of the files and the output size depends on this added audio stream.

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