Weird brightness issue with Media Players

[alonezhby]

I’ve just transferred an project from 4.12 to 4.13, and now having a strange issue with Media Players, the Video get more brighter.

The video should look like:

The video displayed in media player and viewport:

Do I miss something or it’s a bug?

[gmpreussner_1 (Gerke Max Preussner)]

This could be a bug. Can you please provide more details:

1. copy and paste the text in the Media Player Editor’s Info tab
2. if you can, please share the affected video file

!

[alonezhby]

Here is the video info and video file:

Player: WmfMedia

Forward Rates
Thinned: Not supported
Unthinned: Not supported

Reverse Rates
Thinned: Not supported
Unthinned: Not supported

Capabilities
Scrubbing: Yes
Seeking: No

Stream 0
Type: Audio
Codec: MPEG HEAAC
Protected: No
Channels: 2
Sample Rate: 44100 Hz
Bits Per Sample: 16

Stream 1
Type: Video
Codec: M4S2
Protected: No
Dimensions: 1280 x 720
Frame Rate: 25 fps

and other 3 .wmv files have this issue, their info:

Player: WmfMedia

Forward Rates
Thinned: Not supported
Unthinned: Not supported

Reverse Rates
Thinned: Not supported
Unthinned: Not supported

Capabilities
Scrubbing: Yes
Seeking: No

Stream 0
Type: Video
Codec: WMV2
Protected: No
Dimensions: 1440 x 1080
Frame Rate: 30 fps

!

[alonezhby]

Another issue about the media player:
I use a slider widget to seek the video, sometime it can seek to desired time relative to the slider widget, sometime not.(4.12.5 work well). I found the Seeking capability is No, is this reason? How to enable it? And here is the video info:

Player: WmfMedia

Forward Rates
Thinned: Not supported
Unthinned: Not supported

Reverse Rates
Thinned: Not supported
Unthinned: Not supported

Capabilities
Scrubbing: Yes
Seeking: No

Stream 0
Type: Audio
Codec: MPEG HEAAC
Protected: No
Channels: 2
Sample Rate: 48000 Hz
Bits Per Sample: 16

Stream 1
Type: Video
Codec: H264
Protected: No
Dimensions: 1280 x 720
Frame Rate: 25 fps

And this video is blurry in 4.13
It should look like(in 4.12):

In 4.13 (blurry):

!

[gmpreussner_1 (Gerke Max Preussner)]

Any chance you can share the video file? You can also email me privately at max.preussner@epicgames.com, !

[anonymous_user_0c62419a]

We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and we will follow up.

[CosmoGorynych]

I have issues with “blurring”. It looks like the resolution is halved down inside editor and PIE.

My UE version is 4.13.0

[All the possible video info][3]

[gmpreussner_1 (Gerke Max Preussner)]

I resolved the brightness issue with the user offline. It seems that the YUV-to-RGB conversion for WMV3 encoded videos is broken in Windows Media Foundation. This is resolved in 4.13 by using our own pixel conversion shader.

The WMV2 decoder is also affected. A workaround for it will be added in 4.14. In the meantime, I suggest using WMV3 or H.264 on Windows instead.

[gmpreussner_1 (Gerke Max Preussner)]

Can you share your video file, so I can test it on my PC? You can email me (max.preussner@epicgames.com) a link if you don’t want to share it here, !

[CosmoGorynych]

Just have sent it

[gmpreussner_1 (Gerke Max Preussner)]

, I cannot repro your problem. Are you on 4.13?

[CosmoGorynych]

Yes, here is my full version number:

My OS is Windows 10

[CosmoGorynych]

Is there any software that can convert from some formats to wmv3 codec? Digged everywhere and tried some software, but without any result.

[CosmoGorynych]

What was that?
I tried updating 4.13.0 and, after an hour or so, faced a blue screen of death >.<" actually it seems to become a regular practice to pop out BSOD in the middle of UE4 downloads and updates.

After a second attempt an update was finished. The engine is still 4.13.0, but the release date changed to 30 of August. And, hooray, the video shows as it should.

So my problem is solved.

[gmpreussner_1 (Gerke Max Preussner)]

Handbrake can probably do it.