Multimedia api nvencoder change framerate while running

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hi nvidia:
I use multimedia API to create the encoder in blocking mode and make it works follow the example. The question is how can I change the frame rate while the encoder is running? I attempt to use setFrameRate API, but it doesn’t work.

my platform is jetson XAVIER NX, R35.1.

Thanks,
Ernan

3

Hi,
The latest release is Jetpack 5.1.2. Please upgrade to the latest version since certain bugs are fixed in later release.

For changing framer ate in runtime, there is demonstration in

/usr/src/jetson_multimedia_api/samples/01_video_encode

Runtime configurable parameter string should be of the form:
"f<frame_num1>,<prop_id1><val>,<prop_id2><val>#f<frame_num1>,<prop_id1><val>,<pr
op_id2><val>#..."
e.g. "f20,b8000000,i1#f300,b6000000,r40/1"

Property ids:
        b<bitrate>  Bitrate
        p<peak_bitrate>  Peak Bitrate
        r<num/den>  Framerate
        i1          Force I-frame

Please refer to the sample and try.

5

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