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Fix video thumbnailer

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This commit is contained in:
Michael Telatynski 2021-05-21 21:04:36 +01:00
parent 3ed421dacf
commit 254697644e
1 changed files with 11 additions and 5 deletions
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16
src/ContentMessages.tsx
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@ -237,7 +237,8 @@ function infoForImageFile(matrixClient, roomId, imageFile) {
}
/**
* Load a file into a newly created video element.
* Load a file into a newly created video element and pull some strings
* in an attempt to guarantee the first frame will be showing.
*
* @param {File} videoFile The file to load in an video element.
* @return {Promise} A promise that resolves with the video image element.
@ -246,20 +247,25 @@ function loadVideoElement(videoFile): Promise<HTMLVideoElement> {
return new Promise((resolve, reject) => {
// Load the file into an html element
const video = document.createElement("video");
video.preload = "metadata";
video.playsInline = true;
video.muted = true;
const reader = new FileReader();
reader.onload = function(ev) {
video.src = ev.target.result as string;
// Once ready, returns its size
// Wait until we have enough data to thumbnail the first frame.
video.onloadeddata = function() {
video.onloadeddata = async function() {
resolve(video);
video.pause();
};
video.onerror = function(e) {
reject(e);
};
video.src = ev.target.result as string;
video.load();
video.play();
};
reader.onerror = function(e) {
reject(e);