Unable to use the TK1 gstreamer nvhdmioverlaysink last-sample for a screenshot

[merwin]

I am trying to use the last-sample of the nvhdmioverlaysink to grab a screenshot periodically from an h.264 decode pipeline. When I send it to a pipeline with an appsrc it renders as a solid green image. The memory type if the sample is “omxsink” and does not appear to be usable. Is it possible to grab an image from the last-sample of the nvhdmioverlaysink?

[DaneLLL]

Hi,
It is not supported in using nvhdmioverlaysink. Suggest yo use tee plugin. Please refer to

Take a snapshot of the Tx2 screen.

hi, This case is not supported in default release. The data is in frame buffer and there is no API to fetch the data. In video playback, you may use tee plugin and feed decoded video frames into pngenc.