May I ask you a question about youtube-dl

[ghost]

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• [o] I'm asking a question
• [o] I've looked through the README and FAQ for similar questions
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Hello!
May I ask you a question?

​If I find the "audio only" file and the "video only" file that the codec (avc1.4d401f / mp4a.40.2 )matches, and save it together, will it be the same as the original(youtube file)?

The last question is, when you save your program, don't you change(transcoded) or compress it?

Thank you.
And Sorry, for my bad English. :)

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[Hrxn]

​If I find the "audio only" file and the "video only" file that the codec (avc1.4d401f / mp4a.40.2 )matches, and save it together, will it be the same as the original(youtube file)?

Yes. If by original you mean what you've just watched in your browser before.

The last question is, when you save your program, don't you change(transcoded) or compress it?

No, nothing is transcoded by default. Unless you change output format options, or pass other options to ffmpeg etc.