I'm trying to create a thumbnail from from video on a remove server using the video editor plugin, but just cant get it to work.
The thumbnail doesnt get created.
Below is my code:
private createThumbnail(remoteFileUrl: string) {
this.thumbnailOptions = {
atTime: 60,
height: 1024,
width: 1024,
quality: 100,
fileUrl: remoteFileUrl, // looks something like this : http://example.com/filename.mp4
outputFileName: remoteFileUrl.substring(videoFile.lastIndexOf('/') + 1)
};
this.videoEditor.createThumbnail(this.thumbnailOptions).then(
thumbnail => { this.thumbnail = thumbnail; },
error => { this.thumbnail = '' }
);
}
When i run this code i get the following error
"java.io.FileNotFoundException: file:/http://example.com slash file name -> http://example.com slash file name
Thats because the plugin does only support local video sources and you are trying to load one via the http protocol. Looking at the sourecode of the plugin you can find the following snippet in the createThumbnail() method:
String fileUri = options.getString("fileUri");
if (!fileUri.startsWith("file:/")) {
fileUri = "file:/" + fileUri;
}
}
So if you pass a URI starting with http like in your example it will add file:/ before it - of course - resulting in a FileNotFoundException.
You can try to fork the plugin and modify it according to your needs.
Related
I would need some method on the server side (cloud function) to give me a 'changing' url when an image is updated with same file name. Is that possible?
Background: I use the recent firebase extension to create thumbnails. When thumbnails are generated, I store the download urls on firestore for access in my mobile app
As per difference between getSignedUrl() and getDownloadUrl() I use getSignedUrl().
But this method gives me 'same' url even when the underlying image changes. And because the url is same the Widget (I use flutter) does not re-build and the modified image is not reflected
exports.thumbnailHandler = functions.storage.object().onFinalize(async (object) => {
const contentType = object.contentType;
const filePath = object.name;
const fileBucket = object.bucket;
const fileRef = admin.storage().bucket(fileBucket).file(filePath);
const options = {
action: 'read',
expires: '12-31-2099'
};
fileRef.getSignedUrl(options).then(results => {
var downloadUrl = results[0];
console.log(downloadUrl); //This is same url everytime, even when image changes but with same file name
}
}
Is there an alternative to signedUrl above something equivalent to downloadUrl from flutter sdk?
Update This is the answer: This gives me the downloadUrl as I would from a client https://stackoverflow.com/a/53744579/11749006
I am trying to use QuillJS to let the user write a rich text, and then store it as JSON to display later on. There are 2 of these rich text areas in a single form, and may include images. QuillJS encodes images as base64 strings, and my POST request results in 413 by Express.
I have tried to change the limits by adding express json parameters, even trying extreme numbers.
// app.js
//----------------------------------------------------
// Middlewares
//----------------------------------------------------
app.use(express.json({limit: '2000mb'}));
app.use(express.urlencoded({extended: true, limit:'2000mb'}));
Even this did not help and I think it is not logical to let these parameters with such values.
I tried with json and urlencoded enctypes. When I tried to post with multipart/form, req.body was empty.
// My html page (pugJS)
form(enctype='application/x-www-form-urlencoded', action='/editor/page',
method='POST', onsubmit='return addContent()')
.form-control
label Content-1
div#toolbar
div#editor
input#content(name='content', type='text', hidden)
addContent() function that runs before form submit simply changes input#content's value with JSON.stringify(#editor.getContents())
I want to be able to store two quill content in a single database row, to display later.
A better approach to this would be to overwrite the image upload function and then save the image in Amazon S3 or some cloud server. Then you paste it inside the editor as <img src="http://uploaded-image-url"> This would solve your problem of maximum memory issue.
I fixed my problem few hours before #argo mentioned and I did it that way. So I wanted to post little bit of detail to the solution. I have been also guided by a github issue but can't seem to find the link again, in case I find it I will edit the post and add it.
// Quill - EN content
var quillEn = new Quill('#editor-en', {
modules: {
toolbar: toolbarOptions
},
theme: 'snow'
});
// set custom image handler
quillEn.getModule('toolbar').addHandler('image', () => {
selectLocalImage(quillEn);
});
// create fake input to upload image to quill
function selectLocalImage(editor) {
const input = document.createElement('input');
input.setAttribute('type', 'file');
input.setAttribute('accept', 'image/png, image/jpeg')
input.click();
// Listen upload local image and save to server
input.onchange = () => {
const file = input.files[0];
saveImageToServer(editor, file);
};
}
// upload image to server
function saveImageToServer(editor, file) {
const fd = new FormData();
fd.append('image', file);
const xhr = new XMLHttpRequest();
xhr.open('POST', '/api/page/upload_image', true);
xhr.onload = () => {
if (xhr.status === 200) {
// this is callback data: url
const url = JSON.parse(xhr.responseText).data;
insertToEditor(editor, url);
}
};
xhr.send(fd);
}
// manipulate quill to replace b64 image with uploaded image
function insertToEditor(editor, url) {
// push image url to rich editor.
const range = editor.getSelection();
editor.insertEmbed(range.index, 'image', url.toString());
}
In the backend where you POST image, you must return json as { data: FullUrlToImg } with 200 response, if you want to change your status to 201 or something else, don't forget to update it in saveImageToServer function.
So to summarize, you set custom image handler for your quill editor, you post the image to server as soon as user chooses to insert, then you replace the URL with your uploaded image in the editor.
Thanks.
I would like to do image annotation for my Ionic Application. So the flow of the app would be using the camera plugin to take a picture and use FabricJs to draw on the image then save the file.
I hit the roadblock when I am trying to save or overwrite the file. Apparently the source "http://localhost:8080/file/data/user/0/***/files/1547183479807.png" file does not update.
The flow of the app
1) Take picture with #ionic-native/camera
2) Copy the file to a local directory
3) Use this.win.Ionic.WebView.convertFileSrc to convert the file name to "http://localhost:8080/file/data/user/0/***/files/1547183479807.png"
4) Push to another page to access the canvas
5) Use the link to setBackground to my canvas (FabricJs)
6) Draw on the image (Manually)
7) Save the file via overwriting the existing file but nothing works from here on.
I tried to
- overwrite with writeFile & writeExisitingFile, did not work.
- removeFile and writeFile and did not work.
- tried converting to ArrayBuffer rather than Blob and did not work
- tried creating another new file, did not work too (it seems like after I push to a new page, all the file functions does not affect the files)
- tried using native cordova but did not work too.
- delete that same files twice, (first time I did not get an error but the second time I got an error saying "File Does not exist" but when I view the source, the file is also there and appearing in my thumbnail on my App.
private copyFileToLocalDir(namePath, currentName, newFileName,id,index) {
this.file.copyFile(namePath, currentName, this.file.dataDirectory, newFileName).then(success => {
const keys = id.split('-');
let filename = this.file.dataDirectory + newFileName;
this.fp = this.win.Ionic.WebView.convertFileSrc(filename) ;
this.navCtrl.push(AnnotationsPage, {
filepath: this.fp,
filename: newFileName
});
this.presentToast("Image Successfully Added",'middle');
}, error => {
this.presentToast('Error while storing file.','middle');
});
}
Annotation.ts
savePicture() {
let image = this.canvas.toDataURL({
format: 'png'
});
this.saveBase64(image);
}
public saveBase64(base64:string):Promise<string>{
return new Promise((resolve, reject)=>{
var realData = base64.split(",")[1]
let blob=this.b64toBlob(realData,"image/png")
this.file.writeFile(this.file.dataDirectory,this.filename,blob,{replace:true})
// this.file.writeExistingFile(this.file.dataDirectory,this.filename, blob)
.then((val)=>{
console.log('Write Info',val)
let fp = this.win.Ionic.WebView.convertFileSrc(this.file.dataDirectory+this.filename) ;
})
.catch((err)=>{
console.log('error writing blob')
console.log(err);
// reject(err)
})
})
}
b64toBlob(b64Data, contentType) {
contentType = contentType || '';
var sliceSize = 512;
var byteCharacters = atob(b64Data);
var byteArrays = [];
for (var offset = 0; offset < byteCharacters.length; offset += sliceSize) {
var slice = byteCharacters.slice(offset, offset + sliceSize);
var byteNumbers = new Array(slice.length);
for (var i = 0; i < slice.length; i++) {
byteNumbers[i] = slice.charCodeAt(i);
}
var byteArray = new Uint8Array(byteNumbers);
byteArrays.push(byteArray);
}
I check the base64 file, it is working fine (Throw the data to an online converter and it display the picture.
After the function "copyFileToLocalDir", it seems like I am unable to modify the files store in the local directory.
Thanks in advance. Feel free to ask me more question. 7 hours and no result.
Update on the testing, I am doing.
Did File.readAsDataUrl and as expected the file file:///data/user/0/*/files/1547231914843.png updated from the old image to the new edited. (Tested the base64 on some online converter) but it still does not reflect on the source http://localhost:8080/file/data/user/0/***/files/1547231914843.png
Thanks to all those who read through.
After tons of testing, I found out that Ionic Webview's files, will not be updated unless you recall them again (Kind of like a cache and apparently there is no way to reset or flush the cache).
So in my case, I would need to remove the image from the webview and call it out again then it will go back to retrieve again or create another file with another file name and display it.
In my symfony2 project I use TidyMCE in my textareas, to be able to insert news from the backend. News can have images in the content or files links to pdf files to display. I am new to this and I can not upload the images or files, so that I can search the different folders and once selected a copy is made on the server.
I've been looking at a lot of comments, but I'm kind of bundled up. I have seen on the web of tinymceel following code:
Basic Local File Picker
tinymce.init({
selector: '#editor',
plugins: 'image code',
toolbar: 'undo redo | link image | code',
// enable title field in the Image dialog
image_title: true,
// enable automatic uploads of images represented by blob or data URIs
automatic_uploads: true,
// URL of our upload handler (for more details check: https://www.tinymce.com/docs/configure/file-image-upload/#images_upload_url)
images_upload_url: 'postAcceptor.php',
// here we add custom filepicker only to Image dialog
file_picker_types: 'image',
// and here's our custom image picker
file_picker_callback: function(cb, value, meta) {
var input = document.createElement('input');
input.setAttribute('type', 'file');
input.setAttribute('accept', 'image/*');
// Note: In modern browsers input[type="file"] is functional without
// even adding it to the DOM, but that might not be the case in some older
// or quirky browsers like IE, so you might want to add it to the DOM
// just in case, and visually hide it. And do not forget do remove it
// once you do not need it anymore.
input.onchange = function() {
var file = this.files[0];
// Note: Now we need to register the blob in TinyMCEs image blob
// registry. In the next release this part hopefully won't be
// necessary, as we are looking to handle it internally.
var id = 'blobid' + (new Date()).getTime();
var blobCache = tinymce.activeEditor.editorUpload.blobCache;
var blobInfo = blobCache.create(id, file);
blobCache.add(blobInfo);
// call the callback and populate the Title field with the file name
cb(blobInfo.blobUri(), { title: file.name });
};
input.click();
}
});
PHP Upload Handler
<?php
/*******************************************************
* Only these origins will be allowed to upload images *
******************************************************/
$accepted_origins = array("http://localhost", "http://192.168.1.1", "http://example.com");
/*********************************************
* Change this line to set the upload folder *
*********************************************/
$imageFolder = "images/";
reset ($_FILES);
$temp = current($_FILES);
if (is_uploaded_file($temp['tmp_name'])){
if (isset($_SERVER['HTTP_ORIGIN'])) {
// same-origin requests won't set an origin. If the origin is set, it must be valid.
if (in_array($_SERVER['HTTP_ORIGIN'], $accepted_origins)) {
header('Access-Control-Allow-Origin: ' . $_SERVER['HTTP_ORIGIN']);
} else {
header("HTTP/1.0 403 Origin Denied");
return;
}
}
/*
If your script needs to receive cookies, set images_upload_credentials : true in
the configuration and enable the following two headers.
*/
// header('Access-Control-Allow-Credentials: true');
// header('P3P: CP="There is no P3P policy."');
// Sanitize input
if (preg_match("/([^\w\s\d\-_~,;:\[\]\(\).])|([\.]{2,})/", $temp['name'])) {
header("HTTP/1.0 500 Invalid file name.");
return;
}
// Verify extension
if (!in_array(strtolower(pathinfo($temp['name'], PATHINFO_EXTENSION)), array("gif", "jpg", "png"))) {
header("HTTP/1.0 500 Invalid extension.");
return;
}
// Accept upload if there was no origin, or if it is an accepted origin
$filetowrite = $imageFolder . $temp['name'];
move_uploaded_file($temp['tmp_name'], $filetowrite);
// Respond to the successful upload with JSON.
// Use a location key to specify the path to the saved image resource.
// { location : '/your/uploaded/image/file'}
echo json_encode(array('location' => $filetowrite));
} else {
// Notify editor that the upload failed
header("HTTP/1.0 500 Server Error");
}
?>
But I do not quite understand where to put the postAcceptor.php or referred to with {location: '/ your / uploaded / image / file'}.
I'm a little lost, please thank all the possible help
postacceptor is your server side method for accepting the file and uploading it in your server. I am using mvc so I created a custom route "ImageUpload". and I use that instead.
location part is the expected return from your method. this will replace the file location/referrer a.k.a src tag when you use images_reuse_filename = true.
I don't use symphony but according to your code you would put the postAcceptor file in the same directory as form
Am using Liferay 6.2 and trying to get a external page in a pop up.
Am using the following code
function ShowPopup(){
AUI().ready(function(A) {
AUI().use('aui-dialog', 'aui-io', function(A) {
var url1 = '/myportlet/myview.jsp';
// var url1 = 'www.google.com';
Liferay.Util.openWindow(
{
dialog: {
cache: false,
width: 800,
height: 700,
modal: true
},
id:'myview',
uri: url1
}
);
Liferay.provide(
window,
'closePopup',
function(popupIdToClose) {
var dialog = Liferay.Util.getWindow(popupIdToClose);
dialog.destroy(); // You can try toggle/hide whatever You want
},
['aui-base','aui-dialog','aui-dialog-iframe']
);
});
});
If I provide the first var url1('/myportlet/myview.jsp'), the popup displays properly, as it is internal link, But if I provide the second var url1('www.google.com'). The localhost url is prepended for the URI(like http://localhost:8080/www.google.com), so it is not able to display the external link in pop up.
How can i make the external url display in the popup.
If your target has different domain, you should use absolute URL including protocol - http://www.google.com.
Anyway, I think it may be hard to embed google as recently there is new trend for securing sites against iframing (and I think google has introduced these improvements). More details here How to show google.com in an iframe?.