A networking device for buffer management in video streaming over a network, said networking device comprising: - a network interface for receiving one or more video streams from a network, ∘ some of the received one or more video streams being one or more low priority video streams containing low priority content; ∘ some of the one or more video streams being one or more high priority video streams containing high priority content; - one or more low priority buffers for buffering packets of respectively said one or more low priority video streams, each low priority buffer having a respective low priority buffer delay; - one or more high priority buffers for buffering packets of respectively said one or more high priority video streams, each high priority buffer having a respective high priority buffer delay; - wherein said packets of said video buffers (402, 502), if combined, constitute frames of a combined video stream; - a buffer synchronization agent configured to monitor said respective low priority buffer delays and high priority buffer delays of said one or more low priority buffers and said one or more high priority buffers (402, 502) in order to determine a common delay b* and configured to determine said common delay b* for said buffers (402, 502), wherein b* is smaller than a monitored low priority buffer delay and greater than or equal to monitored high priority buffer delays of said one or more high priority buffers if said monitored low priority buffer delay exceeds the monitored high priority buffer delays, and wherein said buffer synchronization agent is configured to enforce said determined common delay b* to said buffers (402, 502), where said common delay b* is used as the low priority buffer delay of said one or more low priority buffers and as the high priority buffer delay of said one or more high priority buffers; - a composer configured to combine said packets of said video buffers (402, 502) into said frames of said combined video stream. - a network interface for receiving one or more video streams from a network, ∘ some of the received one or more video streams being one or more low priority video streams containing low priority content; ∘ some of the one or more video streams being one or more high priority video streams containing high priority content; ∘ some of the received one or more video streams being one or more low priority video streams containing low priority content; ∘ some of the one or more video streams being one or more high priority video streams containing high priority content; - one or more low priority buffers for buffering packets of respectively said one or more low priority video streams, each low priority buffer having a respective low priority buffer delay; - one or more high priority buffers for buffering packets of respectively said one or more high priority video streams, each high priority buffer having a respective high priority buffer delay; - wherein said packets of said video buffers (402, 502), if combined, constitute frames of a combined video stream; - a buffer synchronization agent configured to monitor said respective low priority buffer delays and high priority buffer delays of said one or more low priority buffers and said one or more high priority buffers (402, 502) in order to determine a common delay b* and configured to determine said common delay b* for said buffers (402, 502), wherein b* is smaller than a monitored low priority buffer delay and greater than or equal to monitored high priority buffer delays of said one or more high priority buffers if said monitored low priority buffer delay exceeds the monitored high priority buffer delays, and wherein said buffer synchronization agent is configured to enforce said determined common delay b* to said buffers (402, 502), where said common delay b* is used as the low priority buffer delay of said one or more low priority buffers and as the high priority buffer delay of said one or more high priority buffers; - a composer configured to combine said packets of said video buffers (402, 502) into said frames of said combined video stream.