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From: Siard <saylor259@mailbox.org>
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Subject: Re: Video refuses to play - only audio
Date: Wed, 3 Dec 2025 18:15:57 +0100
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On Wed, 3 Dec 2025 17:04, Robert Prins wrote:
> https://prino.neocities.org/ - look for
> 
> "On Nachtdieren, a TV program from the Dutch BNNVARA broadcaster",
> 
> and click on the "local copy" link
> 
> <https://prino.neocities.org/nachtdieren/prino-nachtdieren.h265.mp4>
> 
> and only the audio will appear.
> 
> I've tried the <VIDEO> tag, but it doesn't make any difference.
> Downloading it, it plays without problems in VLC.

There is apparently something wrong with the video.
I could repair it with ffmpeg:

ffmpeg -i prino-nachtdieren.h265.mp4 prino-nachtdieren.h265_new.mp4

This one plays fine in a browser.
The size has increased to 61 MB though.
I guess you could make it smaller with quality settings in ffmpeg.
However, 61 MB for a 3 min. 20 sec. 1920x1080 video is quite standard.