Can drop-frame-interval in nvv4l2decoder be used to control RTSP stream FPS?

Accelerated Computing Intelligent Video Analytics DeepStream SDK
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I’m working on a DeepStream pipeline with an RTSP input source running at 30 FPS. I want to reduce the processing FPS to 5. I’m aware of using the videorate element for frame dropping, but I came across the drop-frame-interval property in the nvv4l2decoder.

There’s very little documentation on how exactly drop-frame-interval works.

  • Can nvv4l2decoder drop-frame-interval be used to control the effective FPS from an RTSP source?
  • If yes, how exactly does it drop the frames?
  • Is it a recommended alternative to using videorate in production?

Would appreciate any technical insight or references.

Thanks!

inception

3

nvv4l2decoder drop-frame-interval only control the output frames from nvv4l2decoder. The RTSP stream itself will not be changed by the video decoder.

As the Gst-nvvideo4linux2 — DeepStream documentation says, the nvv4l2decoder drop output frames. E.G. a value of 5 means the decoder outputs every fifth frame, and others are dropped.

Both of them are fine if your RTSP stream can generate the stream with constant FPS.