custom dataset pre-processing

[likuiF]

I want to run Trajnet++ to get baseline results on the custom dataset. My dataset has data in format [frame,ped_ID, y,x].
I want to convert this dataset into Trajnet++ format.
I was testing with the ETH dataset and by using convert.py code, as you explain in the blog. When I use eth={obsmat.txt} file to process the file, I get the processed file as expected in the output folder.
But when I use data given in the Trajnet_orginal() folder, which has similar columns as my data, I get an error, "No scene found".
I can't figure out the issue.
Your help is greatly appreciated.