PixelStreaming Memory Leak in 5.7+

Mbr
Wed, 08 Apr 2026 11:34:52 +0000
Cinematics & Media

When running PixelStreaming2 plugin and using h264 as the encoder, the application begins to leak and eventually crashes. This has been reported several times for past versions, but we didn’t experience this on 5.6, we started experiencing it after upgrading to 5.7 and I’ve tested the very latest on github ue5-main and it still has this issue, so I believe there’s been a regression of some kind. We have switched encoders but want to get back to h264 because it’s hardware encoded rather than software, and not all devices support AV1 still. Is anyone else dealing with this?

2 posts - 2 participants