Mov file is not displayed in the media library

[Raiden-GH]

A mov file is not displayed in the media library. In the chat it appears as a file. If you click on it, the OS plays it.
It can be exported. If you import it back into a chat in the same profile afterwards, it is displayed normally both in the chat itself and in the media library.
This is very strange, as mov files usually work without any problems and the video in question also works if it is newly imported. The file cannot be corrupted either, as it displays correctly in DC-Android and DC-iOS if the profile was transferred from DC-Desktop.

macOS 15.3.1
DC-Desktop 1.54

[Simon-Laux]

These are the code places that likely need to be changed.

deltachat-desktop/packages/frontend/src/components/attachment/Attachment.tsx

Lines 28 to 33 in 72825b7

	const SUPPORTED_VIDEO_MIME_TYPES = Object.freeze([
	'video/mp4',
	'video/ogg',
	'video/webm',
	'video/quicktime',
	])

deltachat-desktop/packages/frontend/src/components/attachment/Attachment.tsx

Lines 47 to 49 in 72825b7

	export function isVideo(filemime: string | null) {
	return SUPPORTED_VIDEO_MIME_TYPES.includes(filemime || '')
	}

But note that this code is ancient, maybe meanwhile there is a much better way to handle this, like ty to load it and register an on error event listener on the <video> element. https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/error_event