Video Over IP Problems ("Missing CC Frame" on Wireshark)

Hi all,

I have successfully implemented the Video Over IP design (AN374) on my devboard with the FEC functionality disabled (because of a missing high-speed DDR SDRAM on the board). Some details :

1) Only the transmit path (TS-to-Ethernet) is used here

2) Only one Transport Stream (TS) with an average rate of 40Mbits

3) Aggregation = 7 TS packets per Ethernet frame

I can see on Wireshark UDP or RTP frames (depending on how I configure the design) coming from the board but when I check these frames, almost every frame is associated with the following critical error :

-----------------------------------------------------------------------

> Detected missing CC frame before this (accumulated CC loss count:9971)

> Expert Info (Error/Malformed): Detected CC loss

message: detected cc loss

severity level: error

group: malformed

-----------------------------------------------------------------------

If I try to open a VLC player at this network address :

rtp://@227.40.50.60:8192

The video appears but with a high degree of artefacts (green squares mixed with original video) and when I check the statistics, the number of corrupted packets is very elevated !!!

I don't understand what I'm doing wrong because I can successfully configure the "ts_input", "rtp_tx" and "udp_ip" blocks with the API and the statistics about every block are described exaclty as in the demo settings....

does anyone have experienced this particular issue about packet loss recently ??

Thanks for your precious help guys !

Papy