HTTP transfers also support several intervals, separated with commas as in
"X-Y,N-M". Using this kind of multiple intervals will cause the HTTP
server to send the response document in pieces (using standard MIME separation
techniques). Unfortunately, the HTTP standard (RFC 7233 section 3.1) allows
servers to ignore range requests so even when you set
for a request, you may end up getting the full response sent back.
For RTSP, the formatting of a range should follow RFC2326 Section 12.29. For RTSP, byte ranges are not permitted. Instead, ranges should be given in npt, utc, or smpte formats.
Nil to this option to disable the use of ranges.