how do I check the file size of a video in flutter before uploading how do I check the file size of a video in flutter before uploading dart dart

how do I check the file size of a video in flutter before uploading


If you have the path of the file, you can use dart:io

var file = File('the_path_to_the_video.mp4');

You an either use:

print(file.lengthSync()); 

or

print (await file.length());

Note: The size returned is in bytes.


// defined the function

getFileSize(String filepath, int decimals) async {    var file = File(filepath);    int bytes = await file.length();    if (bytes <= 0) return "0 B";    const suffixes = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];    var i = (log(bytes) / log(1024)).floor();    return ((bytes / pow(1024, i)).toStringAsFixed(decimals)) + ' ' + suffixes[i];  }

// how to call the function

print(getFileSize('file-path-will-be-here', 1));

// output will be as string like:

97.5 KB

This worked for me. I hope, this will also help you. Thanks a lot for asking question.


This is work for me.

final file = File('pickedVid.mp4');            int sizeInBytes = file.lengthSync();double sizeInMb = sizeInBytes / (1024 * 1024);if (sizeInMb > 10){    // This file is Longer the}