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  #1  
Old 06-19-2015, 03:22 AM
Terenz Terenz is offline
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Understanding manifest ( F4M )


Hi,
I want to be clear, i don't want any software-script or whatever for download a video, i want to learn how this can be done manually

The first thing i want to know is how many fragments is the video. I think the part has this information are "metadata" and "bootstrapInfo" ? The manifest don't have more, except <id> with the basic link.

Based on bitrate, this is the most high resolution:
Code:
<media bitrate="5104" url="1_39ca2412ac6bdfe0_" bootstrapInfoId="bootstrap_1">
<metadata>
AgAKb25NZXRhRGF0YQgAAAAMAAhkdXJhdGlvbgBApLjqfvnbIwAFd2lkdGgAQJ4AAAAAAAAABmhlaWdodABAkOAAAAAAAAANdmlkZW9kYXRhcmF0ZQBAs3EXpIipCwAJZnJhbWVyYXRlAEA4//Thrcu1AAx2aWRlb2NvZGVjaWQAQBwAAAAAAAAADWF1ZGlvZGF0YXJhdGUAQF/pLJd6KQQAD2F1ZGlvc2FtcGxlcmF0ZQBA53AAAAAAAAAPYXVkaW9zYW1wbGVzaXplAEAwAAAAAAAAAAZzdGVyZW8BAQAMYXVkaW9jb2RlY2lkAEAkAAAAAAAAAAhmaWxlc2l6ZQBB2Thr4MAAAAAACQ==
</metadata>
</media>
For what i have read this is encoded with Base64, if i'll try to decode that string ( using CP1256 ) i have this:
Code:
onMetaDataduration@¤¸?~?غ#width@*height@گ?
videodatarate@?q¤?©	framerate@8ےôل*ثµvideocodecid@
audiodatarate@_é,—z)audiosamplerate@çpaudiosamplesize@0stereoaudiocodecid@$filesizeAظ8k?ہ
Some information! But i don't see any "numbers", anyway nothing about how many fragments to download. That metadata is related to "bootstrap_1"
Code:
<bootstrapInfo profile="named" id="bootstrap_1">
AAAAi2Fic3QAAAAAAAAAAQAAAAPoAAAAAAAoeSoAAAAAAAAAAAAAAAAAAQAAABlhc3J0AAAAAAAAAAABAAAAAQAAAboBAAAARmFmcnQAAAAAAAAD6AAAAAADAAAAAQAAAAAAAAAAAAAXcAAAAboAAAAAAChf8AAAGToAAAAAAAAAAAAAAAAAAAAAAA==
</bootstrapInfo>
Base64:
Code:
‹abst?(y*asrt؛Fafrt?p؛(_ً:
Again, nothing useful

And here i'm stopped, waiting for help from someone knows something about this manifest
Thanks for help
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  #2  
Old 06-23-2015, 02:45 AM
Terenz Terenz is offline
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Re: Understanding manifest ( F4M )


Where are all "experts"? I'm still waiting for an answer...
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  #3  
Old 09-19-2015, 09:32 AM
Terenz Terenz is offline
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Re: Understanding manifest ( F4M )


bump!
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