We are encountering a couple of issues and have some queries regarding Adobe Premiere Pro 2025.

Question

While rendering projects in H.264 format, we noticed that chapter markings are not being retained in the final output. Additionally, the file size compression does not meet our expectations. We would appreciate any guidance or solutions to address these issues.
 
We are also exploring the use of extended scripts in Premiere Pro 2025. We tried using Visual Studio for debugging but require a panel solution specifically for rendering. Could you kindly provide detailed instructions or resources on how to implement and use extended scripts in this scenario.We would like to know when UXP support will be fully available in Premiere Pro 2025. Additionally, we request a detailed guideline on how to utilize UXP effectively for scripting and plugin development.  if anyone have idea or solution. please help me out ..

Warren Heaton · Accepted Answer

@Premkumar Maya

For chapter markers, you'll need to switch to QuickTime as the file format for your H264 exports. When exporting to a QuickTime wrapper, Chapter Markers will be embedded and show in video player applications that support QuickTime chapter markers like QuickTime Player.

File size is a direct result of the bit rate settings, but bit rate needs to be high enough to maintain good puncture quality. For standard definition frame sizes like 480p, 5 Mbps works well. For 720p or 1080p, 8 Mbps to 12 Mbps works well. For 2160p, 35Mbps to 40 Mbps works well. If your CPU suppors Intel QuickSync hardware encoding for H264, that can result in much smaller files - especially if using still images.

Bruce Bullis · Answer

>We tried using Visual Studio for debugging but require a panel solution specifically for rendering.

VSCode is the correct debugging environment, for both PPro's ExtendScript and CEP's JavaScript layers. I don't understand what you mean about panels being required for rendering...?

> Could you kindly provide detailed instructions or resources on how to implement and use extended scripts in this scenario

The PProPanel sample's readme is the right place to start.

>We would like to know when UXP support will be fully available in Premiere Pro 2025.

No dates available. The plan is to officially release PPro's UXP support, before the end of this year.

>Additionally, we request a detailed guideline on how to utilize UXP effectively for scripting and plugin development.

Sample UXP plugins: https://github.com/AdobeDocs/uxp-premiere-pro-samples/tree/main

Docs: https://developer.adobe.com/premiere-pro/uxp

PPro UXP Dev Forum (staffed be my team): https://forums.creativeclouddeveloper.com/c/uxp-for-premiere-pro/105

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