By adjusting the attachment compression parameters you limit the size of files that are transferred between a mobile device and the server. When you select the Infinite option for any of the parameters, files are attached in their original format or length, which results in increased data transfer. Files of lower resolution, shorter duration, or lower quality, all help reduce the file size and boost data transfer. The settings apply when a user records a new video or takes a new photo, but do not apply to pre-recorded media. Media files are compressed on user devices before users upload them to the server.

1. Open the view with the control that you want to edit.
   For more information, see Accessing views in your application.
2. In the configuration pane on the right side of the window, hover over the control, and then click the Edit icon.
3. On the General tab, in the Mobile app attachment compression section, in the Video max size field, select one of the following options:
   • To upload the clip in its original resolution, select Infinite.
   • To convert the clip to a specific resolution, select the appropriate option. For example, 1080p.
4. In the Video max duration field, select one of the following options:
   • To upload the clip in its original length, select Infinite.
   • To crop the clip to a specific length, select the appropriate option. For example, 30 seconds.
5. In the Image max diameter field, select one of the following options:
   • To upload the clip in its original size, select Infinite.
   • To resize the image proportionally to a specific size, select the appropriate option. For example, limit the width to 2560 pixels.
6. In the Image max quality field, select one of the following options:
   • To upload the clip in its original quality, select Lossless.
   • To compress the image to a specific quality, select the appropriate option. For example, Medium.
7. Click Apply to save the changes to the control.