Multchannel EXR view channel crash

[kirillall]

Describe the bug
Trying to view any channnel in multichannel exr sequence freeze and then crashes the player.

To Reproduce
Open any multichannel exr file or sequence, choose any channel to display in dropdown menu. Freeze. Crash.

Expected behavior
No freeze, no crash. Display selected channel.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: win11 22H2
• Version 1.3.5

Additional context
Add any other context about the problem here.

[ggarra13]

Can you send or attach an openexr picture where this crash happens? I've tried both multiview and multipart OpenEXRs and they all worked fine for me.

[kirillall]

Hi Gonzalo!
I double checked this issue and here is an update. I try it also on win10. This update is for win10,
I have a multi channel exr sequence with custom aovs inside from Houdini Redshift. If files in the sequence more than 30 this issue happens.
Here some details about selecting channels: All working fine when i selecting channels that are defaults aov (refraction, speculars and so on), but when i start selecting custom aovs, after selecting 2-3 times, mrv2 is freezing and crashes. Also getting crashes immedately after open this sequence. So mrv2 is getting unstable with it.
I send you a exr file via gmail to reproduce this issue.
You need to create a sequence from it. More details about it will be in the mail. Thank you!

[ggarra13]

It is a current bug in the multithread handling of the OpenEXR library, which gets triggered mainly with heavy compression types like DWAA/B.
I am currently compiling a version on all platforms for testing.

[ggarra13]

Give a try to this v1.3.6 betas:

.exe:
https://mega.nz/file/KXRTDaIC#1sG8QuBsYv7MpkltKP0mE3t02FneyFDY66F2o7U7c0Y

.zip:
https://mega.nz/file/6eZXBLbB#tTXVvYLKr_wuHgZ6Q9m1xpKWCPLI2aMLuZ2xi0685VU

[kirillall]

Tested zip version on win10 and win11, no crashes, working smoothly. Thank you very much! I appreciate your quick help!