Change in color of static image on ROKU

"RokuKC" wrote:

"usman_itsrelevant" wrote:
I am working on Roku application and sending static images to Roku for display of weather info

Can you provide the specific image file being used, e.g. by giving a link to the file on your webserver or public dropbox?

Then, on what Roku model(s) do you see the problem?  If you can provide the Model info from the Settings / System / About that will help.

In topic i have added an image and link is also there for output images.
I am facing this issue on almost all models.
But sometimes roku displays images as it should means color of sun is yellow. but sometimes color of sun is bule.

"EnTerr" wrote:
What API are you using (e.g. roScreen, roImageCanvas, roSgScreen/RSG)?
It will help if you share specific model number (e.g. 3600x, 2700x...) and firmware version where you "get the blues".
Also, i am not sure that imgur (what you use for to share the image) doesn't mangle the image even a little and that might be significant, e.g. i see it's a png with alpha.

I have updated code and I am getting this issue on almost all devices of Roku.(Roku_express, Roku2 XD model#3050X). But sometimes I do not get any issue and then this issue starts occur again

"squirreltown" wrote:
I looked at stackoverflow and I didn't see an image of this graphic displaying correctly, the ones that were yellow were different graphics. Obviously it shows correctly here. I don't see a reason but it does appear that the white/grey of the clouds is correct which rules out any bizarre channel swapping in the file or the Roku. Have you tried starting with a fresh graphic and pasting the layer in?

On stackoverflow, I posted two results of same code on same device, means that color of only sun changes from Yellow to Blue and there is no issue with white or grey clouds. And sometimes roku displays sun images correct(Yellow).

"squirreltown" wrote:

"EnTerr" wrote:

"squirreltown" wrote:
Exactly! I did check the inverse and it's a considerably darker shade that what's showing. 

can alfalpha channel affect that?

I think the alfalpha channel is normally for knocking out any photo-bombing cows, so I don't see a connection just yet. Really, the only clue I can find is that if you rotate the hue 180º you get the result shown in the stackoverflow photos. That seems like something, being exactly 180 instead of some arbitrary amount.

screen = CreateObject("roBitmap", {width: 1280, height: 720, AlphaEnable: True})
[size=100][color=#000000][font=Arial, sans-serif]src = this.bitmaps[this.content.forecasts[i].imgURL].bitmap[/font][/color][/size]

DrawObject(x as Integer, y as Integer, src as Object) 

screen.DrawObject(Int(112 + (174 * i) - 75), 250, src)

Above code I am using to display an image. What I have to change to resolve issue?

RokuMarkn! Link in your answer does not works.

I am also getting issue on all images which have yellow color and ROKU display the color blue.

i've seen that before often, with blue images they would appear orange, basically the colors appear inverse.  After messing around with it a few times I chalked it up to a firmware bug, i don't know but seems as if there's something about the image preparation that makes it more or less likely to happen, since it always happened for certain images for me.

"usman_itsrelevant" wrote:
I am working on Roku application and sending static images to Roku for display of weather info

Can you provide the specific image file being used, e.g. by giving a link to the file on your webserver or public dropbox?

Then, on what Roku model(s) do you see the problem? If you can provide the Model info from the Settings / System / About that will help.

What API are you using (e.g. roScreen, roImageCanvas, roSgScreen/RSG)?
It will help if you share specific model number (e.g. 3600x, 2700x...) and firmware version where you "get the blues".
Also, i am not sure that imgur (what you use for to share the image) doesn't mangle the image even a little and that might be significant, e.g. i see it's a png with alpha.

What API are you using (e.g. roScreen, roImageCanvas, roSgScreen/RSG)?
It will help if you share specific model number (e.g. 3600x, 2700x...) and firmware version where you "get the blues".
Also, i am not sure that imgur (what you use for to share the image) doesn't mangle the image even a little and that might be significant, e.g. i see it's a png with alpha.

I looked at stackoverflow and I didn't see an image of this graphic displaying correctly, the ones that were yellow were different graphics. Obviously it shows correctly here. I don't see a reason but it does appear that the white/grey of the clouds is correct which rules out any bizarre channel swapping in the file or the Roku. Have you tried starting with a fresh graphic and pasting the layer in?