Portrait video after effects

[eyunicea53617507]

Hi, I would like to make a video that is 1920 (height) and 1080 (width). Would there be any problems in the export? I have heard some people say it is better to edit it in landscape (1080x1920) with an external monitor made portrait, but I never understand why that is the case. 

[OussK]

No there is no problem with export, you can work on portrait size  

[eyunicea53617507]

Hi thank you for the response. The end goal here is to play the video on a television screen. Would that present any issue? The last thing I want is for it to playback in horizontal with large black bars on the right/left side. Do I have to rotate the video back before export? 

[gabrielc84442177]

Export to media encoder, look for  match source and render the sun of a gun.   

[Mike_Abbott]

As Oussk says - you can make your video whatever size / orientation you need.

However...
One thing you want to clarify here: You say the aim is "... to play the video on a television screen". Is this just going to be a standard TV - but physically rotated and mounted 90 degress from normal orientation?

[eyunicea53617507]

Hi there. Thanks for the reply. Yes, that is what I meant, to make a video meant to display on a screen titled 90 degrees as a portrait. Sorry if I was unclear. Would that present any challenges? 

[Mike_Abbott · Accepted solution]

OK - I think how I would approach this is:

Create a 1,920 (high) x 1,080 (wide) Comp and build your animation in that. Once you've got everything done create a conventional 1,920 (wide) x 1,080 (high) comp and drop your original comp in that. Then rotate the comp layer through -90 degrees so it's sideways in view and fills the landscape comp.

[eyunicea53617507]

I tried this method, but it seems that by inserting a pre-comp into the conventional comp (1920w x 1080h) messes with the key frames, and effects (things like linear wipe). 

[Mike_Abbott]

Did you follow my exact suggestion above - or did you use the Pre-compose command?

[eyunicea53617507]

Thank you for the reply. I think I was a little too over-excited, clicking the continuous rasterise button on the drag-in composition. Just out of curiousity, would dragging a composition into the conventional comp bring down the quality of the animation, especially if continuous rasterise is not on? 

[Mike_Abbott]

Not a problem. Continuous rasterisation (collapse transformations) was going to be my very next question : )  That should be off. There shouldn't be any quality problem at all.