Still exists in 2017.2.1f1

Tried both workaround but on dark areas, there are bad artifacts and you can clearly see the difference in quality if you play the video outside of unity.
Any idea if this will be fixed soon or if there is a better workaround?

We ran into the same issue, we fixed it by making a custom shader based on the default Unity UI shader.

We added:

fixed4 col = tex2D(_MainTex, i.uv); //this is the line before, should be in the shader
col.rgb = LinearToGammaSpace(col.rgb); //this is the line we added

And then make a material with that, put it as the material for the VideoPlayer and you should be good to go

I'm trying to get a workaround going.
Another thread mentioned it might be lacking gamma correction so I wrote a quick shader to try and add in gamma correction using a formula I found online.

// Where _GammaFactor is a range of 1-2.4
col.rgb = pow( col, 1.0 / _GammaFactor);

This brings the color and some brightness back but it up introducing some weird artifacting.
Anyone else had any luck with this?

I have same problem, i tryed different versions but none of them worked ...
2017-1-2f1
2017.3.0f3,
2018.1.0b2

Very annoying to have videos blackened like this. Please fix

Using 2017.3.0f3 and having this issue as well

Having the same problem... kind of stopping the development of my game

We have this issue as well. The legacy MovieTexture doesn't have this problem in linear space, but we just moved to VideoPlayer to have synchronized audio.

I just updated from 2017.1.2f1 to 2017.1.3f1 with hopes of having a more stable version and this is what I get, broken videos.

We can reproduce this issue with 2017.3.0f3. As we want to display video on a Oculus Rift -which requires linear color space- this is kind of a show stopper right now.