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Use createObjectURL instead of readAsDataURL for videos

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Will Hunt 2018-09-26 02:04:55 +01:00 committed by GitHub
parent 60e55594dd
commit ceaa3aaca4
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1 changed files with 9 additions and 17 deletions
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26
src/ContentMessages.js
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@ -148,29 +148,21 @@ function infoForImageFile(matrixClient, roomId, imageFile) {
* @return {Promise} A promise that resolves with the video image element.
*/
function loadVideoElement(videoFile) {
const deferred = Promise.defer();
// Load the file into an html element
const video = document.createElement("video");
const reader = new FileReader();
reader.onload = function(e) {
video.src = e.target.result;
// Once ready, returns its size
// Wait until we have enough data to thumbnail the first frame.
video.onloadeddata = function() {
deferred.resolve(video);
};
video.onerror = function(e) {
deferred.reject(e);
};
// Once ready, returns its size
// Wait until we have enough data to thumbnail the first frame.
video.onloadeddata = function() {
URL.revokeObjectURL(video.src);
deferred.resolve(video);
};
reader.onerror = function(e) {
video.onerror = function(e) {
deferred.reject(e);
};
reader.readAsDataURL(videoFile);
// We don't use readAsDataURL because massive files and b64 don't mix.
video.src = URL.createObjectURL(videoFile);
return deferred.promise;
}