sets file format to mkv

[micahwoodard]

Pull Request instructions:

• Please follow the update protocol
• Answer the questions below in detail. Your responses will be emailed to experimenters.
• If the experimenters must do anything new, provide detailed step by step instructions on the wiki
• If computer maintainers need to manually update anything, provide detailed step by step instructions
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Describe changes:

• sets default file format to mkv
• adds video_file_format field in settings model

What issues or discussions does this update address?

• sipe ticket 4751

Describe the expected change in behavior from the perspective of the experimenter

• None

Describe any manual update steps for task computers

• Add field video_file_format to csv if desired video file format is not mkv

Was this update tested in 446/447?

• 446/7

Does this update impact downstream processing by adding new saved files, or changing their format? If so, have you documented changes?

• No

[alexpiet]

@rachelstephlee

[micahwoodard]

Still need to test and confirm on rig

[micahwoodard]

Tested on rig both mkv and mp4 format specified in the csv settings file. Also played videos. Here is snapshot of bonsai code. This pattern is repeated at every camera.

[rachelstephlee]

i'm scheduling time to test this with ella. i won't need a mouse to test it.

[micahwoodard]

@rachelstephlee did you test this? Feel free to test again but I tested it when I made the pr and confirmed that both mkv and mp4 format specified in the csv settings file wrote the correct file and then also opened and played videos to make sure nothing was corrupted. Are you planning on testing new ffmpeg args?

[rachelstephlee]

I've asked ella for test time, but if you feel confident (it's fairly easy to check) and if there's an alternative way for me to test, I"m fine with approving.

[rachelstephlee]

I'm just using the AIND file standard.