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

[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.