I am developing photo sharing application in iOS using Amazon as backend.
I have uploaded photo to S3 but my problem is how to get metadata of uploaded photo, actually i want lat and lang of that photo. I am using latest sdk version 2.0.2 of aws.
Can you help me? Can you guid me which function I have to use to get meta data information?
The location data, if available, is embedded inside the image file itself and is not part of the file's S3 object metadata. You can define your own custom metadata when the image is uploaded and set the image's coordinates there.
It may be better though to store the coordinates in a DynamoDB table along with the image's S3 object key to provide better lookup and querying.
Related
Is it possible to write a function to get an image from a url such as https://website.com/images/myImage.jpg and then automatically upload it to a Firebase Storage bucket?
I am trying to do it with multiple images in one go but am struggling to get one to work at the moment. My best attempt so far has seen me having to download the images, save them in the Media Library and then send them all up to Firebase, which surely cannot be the most efficient way?
In a nutshell, I have 10 images with URL's like the above and, when the function is fired I need them all to upload to my storage bucket, without the need to save them to the users device library.
Does anyone have any ideas on the most efficient way to do this please?
I have uploaded a video file to S3 using their NodeJS SDK with some metadata. I can see the metadata on the S3 console.
I am recording the timestamp of when in the video a particular event occurs to begin playback from that time when someone renders the video.
This timestamp is what I am storing as part of the metadata in the video file so that I do not need to pass this data to the server through another medium.
I need to use this metadata in my Rails application during render.
When I download the video file, the metadata seems to be lost. I tried using ffprobe to get all meta content but that data visible in S3 is lost.
I read the answer to this question and I seem to be doing the upload right.
Is the metadata I see on the console AWS specific?
How do I access that data through my Rails server?
A "head" operation will allow you to access the metadata without fetching the entire object. Follow this link for more info.
If I were you I would store the metadata in DynamoDB. It is much easier to play with & makes your app more flexible for the future.
I am trying to upload an image from the iphone gallery onto a backend that is constructed using node and mongodb as the db. I am essentially very new to app development and have had 0 luck in finding any useful information. Any help would be much appreciated.
Here you can find some information about storing images with node.js in a mongodb.
Uploading and storing images
And uploading an image with swift:
Uploading file with parameters using Alamofire
Does anyone know how to create and access textfiles in a bucket in Amazon S3 from an iphone? I'm trying to take some data I have and store it in a text file in the bucket if said file exists and create a new text file and store the data in this if it does not exist. I'm slightly confused as I understand how to get the object but I don't know how to access it after that.
Thanks!
I have an iOS application that I am working where I am capturing an image, and then storing it in my Photos Album. I realize that I am able to write custom metadata for this image when I store it using the following:
writeImageDataToSavedPhotosAlbum:metadata:completionBlock:
My question is, is it possible for me to somehow retrieve this same image later on, using this metadata as my search criteria (if for example I store this same metadata in CoreData, and use it later in a query)? An example of possible metadata I am planning on using is either a date and time stamp, and/or geolocation. Is retrieval of images possible using metadata and not knowing the exact file name?
If you already have a Core Data store, save all of the metadata and the asset URL (for the default representation). Then you can do all of your querying locally and access the assets only when required (though you should check they haven't been deleted before showing results).
When you have done your search to get the asset URL you can get the image using assetForURL:resultBlock:failureBlock: from the ALAssetsLibrary.