Delayed FPV Feed Initialization with DJI Mini 4 Pro Using SDK 5.13

[mitchrsm]

Issue

When using the DJI SDK 5.13 sample code with a DJI Mini 4 Pro, there is a noticeable delay of approximately 7-13 seconds before the FPV video feed appears on the first entry into the "Default Layout" activity. If you exit the activity and re-enter it, the feed starts instantaneously, suggesting an issue with the initial drone connection or stream negotiation. In contrast, the same code with a DJI Mini 3 Pro displays the feed almost instantly every time, including the first entry.

Environment

SDK Version: 5.13
Device: DJI Mini 4 Pro
Comparison Device: DJI Mini 3 Pro
App: DJI SDK sample code
OS: Android 14

Steps to Reproduce

Build and run the DJI SDK 5.13 sample app.
Connect a DJI Mini 4 Pro and its remote via USB.
Launch the "Default Layout" activity.
Observe the time from activity launch to when the FPV feed appears.
Exit the "Default Layout" activity and re-enter it to compare the feed start time.
Repeat the process with a DJI Mini 3 Pro for comparison.
Expected Behavior

The FPV feed should appear almost instantly (<1 second) after launching the "Default Layout" activity, as observed with the Mini 3 Pro, both on first entry and subsequent entries.

Actual Behavior

With the Mini 4 Pro, the FPV feed takes 7-13 seconds to appear on the first entry into the "Default Layout" activity. On subsequent entries (after exiting and re-entering), the feed starts instantaneously. With the Mini 3 Pro, the feed is instant every time, including the first entry.