Re: How to download/save a video clip?

Ed Jay <edMbj@xxxxxxxxxxxx> writes:

Thread posters:
I posted a similar question but with some added phenomena I'd like to
better understand. If any of you have the time and interest please
see this post, especially the part about what appears to be a 25mb
limit.

From: reader@xxxxxxxxxxx
Subject: downloadable videos, the mechanism
Newsgroups: comp.infosystems.www.authoring.html
Date: Tue, 12 Feb 2008 09:27:59 -0600
Message-ID: <87ir0ugpog.fsf@xxxxxxxxxxx>

Or, to make things more convenient I'll repost it here with a few
edits:

I'm attempting to understand both ends of what is happening with
online videos being viewed in web browser.

There are many free videos, like tutorial type stuff on the net and
as I experiment with some of them I see the file is actually
downloaded to my pc in most cases.

For example, with firefox I see a file appear in the Cache that is
much larger than similar files, and as I go along clicking video
links and seeing them displayed ... in this case with Quicktime,
inside firefox, these beefy files pile up in the cache.

OK, so far so good. These files linger until the Cache hold setting
arrives I guess. So I thought it was a simple mechanism.

Video starts downloading, video starts playing, and completes
downloading.

But then I happened to accidentally delete the Cache while a video
was still playing... and guess what... it didn't effect its playing
at all.

The cache had zero files, yet the video continues playing...

Then I noticed something else that seemed out of sync with how I
thought it all worked. And this appears to hold true in numerous
tests,

If the video is more than about 25mb, the instant the downloading
part ends the file disappears. I know the approximate size because
the web page gives that detail about the files.

So anything smaller lingers in the cache, anything larger disappears
the very instant the download ends.

The hard part to me, is that the video being played inside the
browser continues playing anyway, and can be restarted as much as
desired. I guess, I don't understand where it is playing from.
Surely large files like that are not being held entirely in memory?

It appears that since the file disappears totally once the download
ends then why is it downloaded at all? If the video can play with
or without a disc file present then why are they downloaded, and why
do they disappear above a specific size. and linger on disk below
that size?

I hoped someone here can shed some light on these things or steer me
toward a source of explanation.
.

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