Re: Resizing mp4

Message-ID	<687d7087@news.ausics.net> (permalink)
From	not@telling.you.invalid (Computer Nerd Kev)
Subject	Re: Resizing mp4
Newsgroups	comp.os.linux.misc
References	<105irl3$3ca8p$1@dont-email.me>
Date	2025-07-21 08:41 +1000
Organization	Ausics - https://newsgroups.ausics.net

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db <dieterhansbritz@gmail.com> wrote:
> I have a photo gallery online, where I display jpg and png photos
> in slightly reduced form to save space /using the convert command) and
> each one is seen as a thumbnail, reduced much more, to be clicked on
> to see the larger picture. This works.
> 
> Occasionally I have video files in mp4 format. I tried the online
> service xconvert but this only reduced the resolution so that I get
> the same size on the creen but fuzzy.

So your browser is scaling the video back up again?

> Is there a way to make the equivalent of a thumbnail video? Xconvert
> does not seem to be it.

It sounds like the Xconvert output works, but the web page where
you use it isn't right. If you're using the HTML5 "<video>" tag to
make the thumbnail video playable, make sure the width= and height=
parameters are set to the reduced resolution of the Xconvert
output.

https://www.w3schools.com/html/html5_video.asp

Alternatively you could make much smaller animated GIFs or APNGs
with single-frame snapshots from the video every few minutes. That
would be much nicer on bandwidth when loading the page. Or just one
thumbnail JPEG frame from near the start of the video (which is the
only option I'd want a page I visit to use). I believe Ffmpeg can
be used for those conversions as well as the full video
downscaling.

-- 
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Resizing mp4 db <dieterhansbritz@gmail.com> - 2025-07-20 13:40 +0000
  Re: Resizing mp4 Mike Scott <usenet.16@scottsonline.org.uk.invalid> - 2025-07-20 15:37 +0100
    Re: Resizing mp4 Chris Ahlstrom <OFeem1987@teleworm.us> - 2025-07-20 11:52 -0400
  Re: Resizing mp4 Eli the Bearded <*@eli.users.panix.com> - 2025-07-20 16:48 +0000
    Re: Resizing mp4 Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-21 05:48 +0000
    Re: Resizing mp4 c186282 <c186282@nnada.net> - 2025-07-25 04:00 -0400
  Re: Resizing mp4 not@telling.you.invalid (Computer Nerd Kev) - 2025-07-21 08:41 +1000
  Re: Resizing mp4 c186282 <c186282@nnada.net> - 2025-07-25 00:02 -0400

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