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Try construction your listener with the extra argument specifying the transport hint:

mage_sub_ = it_.subscribe("/camera/image", 1, &ImageConverter::imageCb, this, image_transport::TransportHint("compressed"));

Try construction your listener with the extra argument specifying the transport hint:

mage_sub_ = it_.subscribe("/camera/image", 1, &ImageConverter::imageCb, this, image_transport::TransportHint("compressed"));image_transport::TransportHints("compressed"));

Try construction constructing your listener with the extra argument specifying the transport hint:

mage_sub_ = it_.subscribe("/camera/image", 1, &ImageConverter::imageCb, this, image_transport::TransportHints("compressed"));

Try constructing your listener with the extra argument specifying the transport hint:

mage_sub_ image_sub_ = it_.subscribe("/camera/image", 1, &ImageConverter::imageCb, this, image_transport::TransportHints("compressed"));image_transport::TransportHints("compressed"));