On 12/11/20 3:08 PM, Samuel Sieb wrote:
First thing to know is that usually a video file is a container holding
a video stream and one or more audio streams. You need to tell
youtube-dl which combination you want.
That is helpful. There's quite a lot of other terminology, but it's
looking like I don't really need to dig into that.
I'm not sure exactly how it picks best, but that's the highest quality
*combined* stream. For the higher quality ones, you need to mix and
match. If you look closely at the list, the last two entries have both
a video stream and an audio stream where the rest have one or the other.
You use the numbers at the front of the line to pick that stream. For
the best combo, you would use "-f 137+140". The result will be an .mp4
file with both streams and VLC can play that.
I'm new at this, but I'm thinking "-f bestvideo+bestaudio" will cover
most of my cases. I notice there's no mention of stereo vs. mono sound.
Another question: If I want to know what resolution was used to make
the original video and audio, and download with the result being that,
how do I do it?
As Cameron said, I would also assume the highest quality version is the
original source. And in most cases, I expect the webm format is
transcoded from the mp4.
I've succeeded in downloading, saving, and viewing two videos now. The
files are huge. I'm glad I plan to do this only once in a while. I'll
have to try this with a video of an old black-and-white subject, like an
episode of The Rifleman. Maybe I can find the episode in which the teen
boy Mark is told that looking for a girlfriend is different from roping
a calf because if he tries to rope a girl, he might get roped back!
Occasionally, I view a video in which one musician really impresses me,
both in that he seems to really enjoy or be into what he's doing and in
his skill. So I want to stop, repeat, view it very slowly, and even
step back or forth one frame at a time, both for educational purposes
and for better appreciation of the musician's skills. A few videos that
I've done that with disappeared or were made private. This has me
wondering if such viewing gets reported to the channel owner. By
downloading the video, I'm hoping I can do the single framing, etc.
without the channel owner knowing. I otherwise would prefer to view the
video online, so the channel owner gets his views, likes, and money.
Now I must learn how in VLC to do the forward and backward
single-framing, and the reduced-speed viewing. So I'll be spending time
in its user's guide.
I'm guessing the silence about "4K Video Downloader" means that route is
more trouble than it's worth. With youtube-dl looking good, I think
once another test or two is passed, I'll tag this thread solved.
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