Managing Projects and Users > Working with Projects >

# Setting the Proxy Management Options

Proxies are low-resolution copies of high-resolution images, one for each frame. Using proxies enables you to get a higher level of playback performance and responsiveness, especially when working with large files. Set proxy management options to specify how and when proxies are generated for clips used in the project. The default setting is Proxies Off.

To set proxy management options:

1. From the Proxy Management option box, select an option.
   TipTo change proxy management options for a current project, you must access the Project and User Management dialoge box.

   Select: | To display:
   --- | ---
   Proxies On | Proxies for all clips larger than the proxy width you set for all proxies.
   Conditional | Proxies only for clips that meet conditional criteria, for example, clips that exceed a width of 4000 pixels.

2. Specify the proxy size by doing one of the following:
   - Select Fixed Width from the Proxy Size box and then enter a value in the Proxy Width field beside the Proxy Size box. For example, enter 720 to create and store proxies 720 pixels wide. Proxy height is determined by the clip's aspect ratio, relative to the proxy width that you set.
   Note
   - If the proxy resolution and bit depth settings are the same as the as the full resolution clip, proxies are not generated.
   - If the proxy resolution is the same as the full resolution clip, but their bit depth is different, proxies are generated.
   - Select Frame Percentage from the Proxy Size box and then enter a value in the Scale field. For example, enter 0.50 to create and store proxies that are 50% of the clip resolution.

   Proxies always have the same aspect ratio as the full-resolution clip. The width of proxies for clips with the default resolution corresponding to the scale value you set is displayed in the Width field.

3. If you selected Proxies Conditional, set your conditional criteria.
   - To store proxies for all clips of a certain width and greater, enable Frame Width > and then enter a value in the adjacent field. For example, enter 4000 to store proxies for all clips wider than 4000 pixels.
   - To store proxies only for 10-bit, 12-bit, or 12-bit unpacked clips, enable Depth > 8-bit.
4. From the Proxy Quality box, set the quality of the proxy image for viewing purposes.

   Proxy quality affects rendering and proxy generation duration since lower qualities are faster to calculate. However, the quality does not affect the amount disk space required for proxies.

   Select: | To specify:
   --- | ---
   Lanczos | Excellent and sharp results. Recommended for upscale and downscale. Expensive to compute.
   Shannon | Excellent and sharp results. Results are sharper than Lanczos in small details. Recommended for upscale and downscale. Expensive to compute.
   Gaussian | Medium quality and softer results.
   Quadratic | Medium quality and softer results.
   Bicubic | High-quality results, but not as sharp as Shannon. Use for both upscale and downscale.
   Mitchell | High-quality results, but not as sharp as Shannon. Use for both upscale and downscale.
   Triangle | Low quality results that are fast to compute. Use for downscale.
   Impulse | Very low quality results that are fast to compute. Use for downscale.
   Draft | The lowest possible quality. This is the quality used when proxies are generated automatically following video I/O.

5. From the Proxy Bit Depth box, select the bit depth for proxies.

   Select: | To set:
   --- | ---
   Depth: 8-bit | The proxy bit depth to 8 bits.
   Depth: Full Res | The proxy bit depth to be the same bit depth as that of the clip.

#### Related Information

- Working with Projects