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changing it from 200000 to 350000 has helped immensely very few pcr dts errors now - out of interest I'll try 1000000 like you have.
Incidentally I've asked in the portsdown forum how to change the variable pcr_pts within Portsdown as the same problem exists when I run directly from Portsdown.
There is no facility to directly connect a touchscreen to the Jetson Nano, and the GPIO pins are very badly buffered so cannot be used in the same way as those on the RPi. However, as a network-attached device, it is a very capable external encoder to be controlled by the Portsdown.
I hope to update the Jetson Nano installation instructions soon, but will not be supporting any other Jetson devices in the forseeable future.
For those of you not following the NVidia forums, I have been working with a couple of other people over the last few days to get Toshiba TC358743 based HDMI->CSI2 boards working on the Jetson Nano. This should include the Auvidia B102 and other unbranded (cheap) capture cards.
I am pleased to announce that Robert, one of the other members there finally managed to successfully capture 720p video today. I have also got it working and although there is a fair way to go to get a complete driver, we seem to have got further than most others that have tried and Robert has published a gist of the changes required to compile the tc358743 driver https://gist.github.com/nyacg/becd94a02 ... 3f38a25b46
From my testing so far, latency is pretty-much zero and CPU usage is quite low as well when capturing 720p. It isn't currently working with 1080p or other lower resolutions but that shouldn't be too difficult to achieve either.
Compiling a new kernel and building the device tree is not for the un-initiated so when we have a complete driver, I will probably produce an SD image with dvbsdr and other required packages pre-installed. It also currently requires a wire connecting between the INT pin and GPIO on the Jetson.
If you want to read the thread where we have been working on it, please look here: https://forums.developer.nvidia.com/t/n ... /122615/73
73 Phil M0VSE