Downloading an S3 .mp4 file to my android studio apps raw folder.

To download an S3 .mp4 file to your Android Studio app's raw folder using Kotlin, you'll need to use the AWS SDK for Kotlin and modify your approach slightly. The raw folder is typically used for compile-time resources, so you'll want to download the file to your app's internal storage or cache directory instead.

Here's a general approach you can take:

1. First, ensure you have the AWS SDK for Kotlin set up in your Android project.

2. Use the S3Client to download the object from your S3 bucket.

3. Instead of downloading directly to the raw folder, save the file to your app's internal storage or cache directory.

4. Use the downloaded file in your app as needed.

Here's a code snippet that demonstrates this process:

import android.content.Context
import software.amazon.awssdk.regions.Region
import software.amazon.awssdk.services.s3.S3Client
import software.amazon.awssdk.services.s3.model.GetObjectRequest
import java.io.File
import java.io.FileOutputStream

suspend fun downloadS3VideoToInternalStorage(context: Context, bucketName: String, objectKey: String) {
    val s3 = S3Client.builder()
        .region(Region.US_EAST_1) // Replace with your bucket's region
        .build()

    val request = GetObjectRequest.builder()
        .bucket(bucketName)
        .key(objectKey)
        .build()

    s3.getObject(request) { response ->
        val file = File(context.cacheDir, "downloaded_video.mp4")
        FileOutputStream(file).use { outputStream ->
            response.write(outputStream)
        }
    }

    // Now you can use the file located at: context.cacheDir.path + "/downloaded_video.mp4"
}

This code downloads the S3 object and saves it to your app's cache directory. You can then use this file in your app to display the video.

Remember to handle exceptions, check for available storage space, and consider the file size when downloading. Also, ensure you have the necessary permissions in your Android manifest to access the internet and write to storage.

After downloading, you can use Android's MediaPlayer or ExoPlayer to play the video from the internal storage location.
Sources
Use GetObject with an AWS SDK or CLI - Amazon Simple Storage Service
Amazon S3 examples using SDK for Kotlin - AWS SDK for Kotlin
Amazon S3 examples using SDK for Kotlin - AWS SDK Code Examples