Hi, in Onvif and Hikvision specification for edge recording access there is an extra header information to add in PLAY command:
Onvif Specification: https://www.onvif.org/specs/stream/ONVIF-Streaming-Spec-v211.pdf 6.4.2 Rate-Control header field This specification introduces the Rate-Control header field, which may be either “yes” or “no”. If the field is not present, “yes” is assumed, and the stream is delivered in real time using standard RTP timing mechanisms. If this field is “no”, the stream is delivered as fast as possible, using only the flow control provided by the transport to limit the delivery rate. The important difference between these two modes is that with “Rate-Control=yes”, the server is in control of the playback speed, whereas with “Rate-Control=no” the client is in control of the playback speed. Rate-controlled replay will typically only be used by non-ONVIF specific clients as they will not specify “Rate-Control=no”. In the offical version of live555 this field is missing ( RequestRecord class ) probably because it is a specific onvif field. i think that a standard way to have this ( and other ) field could be the adding of a generic extra header in RequestRecord class. is it possible ? Regards. Gennaro Gallo
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