refactor: Load bytes from sending files later to not let app crash

lib/utils/resize_video.dart

@@ -0,0 +1,46 @@
+import 'package:cross_file/cross_file.dart';
+import 'package:matrix/matrix.dart';
+import 'package:video_compress/video_compress.dart';
+
+import 'package:fluffychat/utils/platform_infos.dart';
+
+extension ResizeImage on XFile {
+  static const int max = 1200;
+  static const int quality = 40;
+
+  Future<MatrixVideoFile> resizeVideo() async {
+    MediaInfo? mediaInfo;
+    try {
+      if (PlatformInfos.isMobile) {
+        // will throw an error e.g. on Android SDK < 18
+        mediaInfo = await VideoCompress.compressVideo(path);
+      }
+    } catch (e, s) {
+      Logs().w('Error while compressing video', e, s);
+    }
+    return MatrixVideoFile(
+      bytes: (await mediaInfo?.file?.readAsBytes()) ?? await readAsBytes(),
+      name: name,
+      mimeType: mimeType,
+      width: mediaInfo?.width,
+      height: mediaInfo?.height,
+      duration: mediaInfo?.duration?.round(),
+    );
+  }
+
+  Future<MatrixImageFile?> getVideoThumbnail() async {
+    if (!PlatformInfos.isMobile) return null;
+
+    try {
+      final bytes = await VideoCompress.getByteThumbnail(path);
+      if (bytes == null) return null;
+      return MatrixImageFile(
+        bytes: bytes,
+        name: name,
+      );
+    } catch (e, s) {
+      Logs().w('Error while compressing video', e, s);
+    }
+    return null;
+  }
+}