M-JPEG/RTP streaming player to display interlaced video correctly upon rfc2435 Type-specific field

The source video is interlaced, i.e 2 fields per frame. The RTP/UDP M-JPEG streaming server encodes each field into a separate picture and sends it out separately (with its own TimeStamp). The Type-specific field in JPEG header is either 1 or 2 depending on even/odd field according to RFC2435.

VLC player receives and decodes the field picture correctly. But it displays each field picture separately as if it is a progressive scan whole frame picture (treated as Type-specific is 0). It does NOT combine field pictures into a frame picture. The height of video is cut to half. The expected behavior is it will combine even field picture with odd field picture into a frame picture and display frame picture. As a comparison, Apple Quicktime player combines the filed pictures into frame picture and display the combined frame picture correctly.

Tested version is 2.0.1