The error is caused by adding the 'controls' attribute to the <video> HTML tag.
A workaround is to just remove it because without the tag users can 'right click -> Show controls'. Of course if autoplay is not enabled it might be easy to miss that it is actually a video and not an image. Kalcifer On Tue, Jan 22, 2019 at 12:22 PM Kalcifer Kandari <[email protected]> wrote: > I tried all sorts of different things, including using an <iframe> tag > instead of <video>. The <iframe> did not generate any error message, but > height of the <iframe> did not adapt when the tiddler got thinner, whereas > the <video> tag does. I also tried creating a HTML file with a <video> tag > inside, then including that file in an <iframe> within the tiddler, that > also did not generate any errors, but that still had the fixed height issue. > > Here is the HTML for the video, which is inside the tiddler > http://kalcifer.net/#Nodius: > > <video width="100%" height="100%" controls loop autoplay> > <source src="2019_01_22_07_34_06_2.mp4" type="video/mp4"> > Your browser does not support the video tag. > </video> > > Here is the CSS for that tag from the custom CSS tiddler > http://kalcifer.net/#Custom%20CSS: > > video { > width: 100% !important; > max-width: 960px !important; > display: block; > margin-left: auto; > margin-right: auto; > } > > Go ahead and edit the tiddlers in your browser and see what changes. > > Kalcifer > > > > On Tue, Jan 22, 2019 at 11:50 AM Jeremy Ruston <[email protected]> > wrote: > >> This error appears to be common, and the consensus is that it is >> harmless. See this StackOverflow answer for instance: >> >> https://stackoverflow.com/a/50387233 >> >> But, of course, it’s not harmless for TW5 since we have a global error >> trap that reports it to the user; without that error trap it would just be >> another red message visible in the developer console. >> >> I think we need more investigation to see whether the problem is >> triggered by some specific CSS on your site, or if the problem occurs with >> the standard TW5 theme. That may show a way to avoid it through rephrasing >> your CSS. >> >> Otherwise, we’ll have to investigate ways of suppressing the error. >> Perhaps by adding support for a safelist of errors that should be ignored. >> >> Best wishes >> >> Jeremy >> >> On 22 Jan 2019, at 09:29, Kalcifer Kandari <[email protected]> >> wrote: >> >> I don't use any plugins. You can see the configuration of the wiki using >> the link I posted, nothing is hidden. I don't think it is caused by CSS, >> but that's at http://kalcifer.net/#Custom%20CSS, the relevant style is >> under 'video' near the top. >> >> On Tuesday, January 22, 2019 at 9:12:15 AM UTC, PMario wrote: >>> >>> hi, >>> which plugins do you use? >>> -m >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "TiddlyWiki" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/tiddlywiki. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/tiddlywiki/d198353a-22df-4f48-adf3-3b0122602b5e%40googlegroups.com >> <https://groups.google.com/d/msgid/tiddlywiki/d198353a-22df-4f48-adf3-3b0122602b5e%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "TiddlyWiki" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/tiddlywiki/vXVLQD58yPQ/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/tiddlywiki. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/tiddlywiki/CC8B740B-A92A-43C2-9C75-380F61525ACD%40gmail.com >> <https://groups.google.com/d/msgid/tiddlywiki/CC8B740B-A92A-43C2-9C75-380F61525ACD%40gmail.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/CAF_%3DHkNOeF%2B3NSDFoCG2WGpP3T_-q2REfQ6kkrpT8mEf6Du%3DPA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.

