TextOIIO node - file name and frame number

[superrune]

Hi,

I'm trying to set up Natron to stamp text info onto renders for editorial. I would like to have a portion of the file name, and the current frame number. Is that possible?

[Ole Andre Rodlie]

Should be possible with v2 and Python(?).

Ole-André

[superrune]

Hei :)

I can't get any Python syntax to work, the v2 text node only gives me blank output. Have you any sample expressions that actually creates output?

[Ole Andre Rodlie]

Hei :)

I have not tested the Python integration yet.

Ref: http://natron.readthedocs.org/en/python/PythonReference/NatronEngine/AnimatedParam.html#NatronEngine.NatronEngine.AnimatedParam.getCurrentTime

Should give you what you want.

[Ole Andre Rodlie]

Go to text node, right-click text box, set expr:

thisParam.setValue("Frame:%d"%frame)

The text show current frame, but Natron freezes/crashes after some frames, I'm probably doing something wrong :) (I'm no python guy)

Ole-André

[Ole Andre Rodlie]

The crash was by fault, cache disk was full.

[superrune]

I'm onto something now - thanks!

[Sean Kennedy]

Hey guys, thanks for covering this! Very useful!

However, I found that when using 

thisParam.setValue("Frame:%d"%frame)

it sets the frame number to the frame it is currently on when you activate the expression, but does NOT update it when moving the current time.

However, this small change will have it update as the current time changes.

("Frame:%d"%frame)

Thanks again!

[superrune]

I don't have that much Python experience, but I got something working. I right click the text node in Natron 2 and choose Edit expression, and enter this:

shotname = Read1.filename.get()

ret = str(shotname) + " - " + str(frame)

That gave me a framestamp of the reader filename and the current frame number. Now I need to figure out how to remove the path from the filename, and this is good enough for now :)

[Sean Kennedy]

Very nice, superrune!

What about, instead of the filename of the read node, putting the project name there instead?

[Alexandre]

Project filename is not a parameter so you will not be able to access it unfortunately. 

We could add a function to the app object to retrieve it though 

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[Sean Kennedy]

Yeah, that would be very useful down the line. Being able to slate/stamp a project with all the info for a specific project is essential in a pipeine. It's easy enough to piece together with text files, though. :)

[Alexandre]

Okay I just implemented it. 

The 2 parameters (path + name) of the project are now visible in the “Info” tab of the project settings.

They can be accessed from Python like this:

app.getProjectParam(“projectName”).get()

app.getProjectParam(“projectPath”).get()

On 7 May 2015, at 17:38, Sean Kennedy <mackd...@gmail.com> wrote:

Yeah, that would be very useful down the line. Being able to slate/stamp a project with all the info for a specific project is essential in a pipeine. It's easy enough to piece together with text files, though. :)

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[Sean Kennedy]

Holy crap, awesome! Thanks!! I imagine this will be available in tomorrow's daily build?

Started using Natron a bit in the production I'm on. Working great so far!

[Gmail]

Yes but there seem to be an issue with the windows build, I'll take a look at it when I have time 

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