Can't download videos

[prensing]

Sorry, I dug into this and am just getting no where. Hopefully someone can help.

I am trying to write/update a script to maintain a full backup of my Flickr (pro) account, and it is mostly working. My stumbling block is that it just won't download videos. I get to the part where it has the URL, such as:
https://www.flickr.com/photos/ligerbots/18250468150/play/orig/36f52680b5/
but the script gets a 404 response. If I put that same URL into a browser (which is logged into my Flickr account), it seems to download just fine.

I read that downloading Original size videos is only allowed for the owner, so I am guess that my script is not logging in and authenticating properly. But I don't know how to test that and debug it. Most of my script was "borrowed" from others, and then tweaked for how I want the output. I do have an API key and secret and did the OAuth login (with "read" permissions).

Any help and suggestions would be appreciated.

[beaufour]

Sounds like it's probably authentication related, but hard to say without knowing exactly what you are doing. I maintain this tool:
https://github.com/beaufour/flickr-download
which is based on the API here and I know works. Maybe you can use that? Or you can crib some stuff from that?