Clarification about maximum H264 encoding FPS on ESP32-P4 (IDFGH-16873)

[liamplm]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

Hi,
I’m trying to understand the maximum FPS the hardware h264 encoder on the ESP32-P4 can actually handle. In the documentation you mention 1080p@30 fps in the performance section, but I couldn’t find any test results for lower resolutions like 720p or 480p, where the encoder load would be lower.

Also, I didn’t see any explicit upper limit for FPS in the official docs.
For example, here the supported FPS range is listed as 1 to 255: esp_h264 component docs

And in the ESP-IDF example that uses this component, the menuconfig allows up to 60 fps, but it doesn’t specify what resolutions are actually supported at that framerate: esp-idf h264 example

Could you clarify the real, tested maximum FPS for the hardware encoder, especially for resolutions below 1080p?