L2 IP Multicasting

I have a L3 switch (3750-X), I am doing a simple multicasting configuration. My toppology is three PCs connected to 3750-x switch. All are configured in a same vlan. One of the PCs is the stream server and the others are the receivers. By default, the stream should be received as this is a L2 IP multiacsting, but it does not work. In order for PCs to receive the stream, I have to globaly use this command - no ip igmp snooping vlan x and then all PCs receive the stream.

is this noramlly how we should configure L2 IP Multicasting for a same VLAN?

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