Is there a limit for the attachment size in Messages?

I'm trying to send a **36 MB** .mp4 video via Messages, but I'm not exactly sure if it's working. After sending the file, the CPU usage of the processes VTDecoderXPCService and IMTranscoderAgent goes up very high (~300%) and then **only about 11 MB of data are send**. I doubt that Messages is performing some magical compression that results in *"Could not transfer file. Attachment too large..."* Is there a limit for the attachment size in Messages?