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DVRRDK AVSYNC ERROR on MCFW DEMO

Liddell Chen
Prodigy 40 points
Other Parts Discussed in Thread: TVP5158

I'm using dvrrdk 2.80.00.10 on my board. It use a TVP5158 to capture 4 D1 CVBS input. 

When I choose "6: VCAP + VDIS - NO Encode or Decode"，the HDMI display began to flash and get the err message:

 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[244901]/CurTs[245078]
 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[247191]/CurTs[258309]
 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[260323]/CurTs[260481]
 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[260481]/CurTs[260698]
 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[260698]/CurTs[265512]
 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[265512]/CurTs[267443]
 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[267898]/CurTs[268672]
 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[269205]/CurTs[271105]
 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[271105]/CurTs[271263]
 [m3vpss ] AVSYNC:WallTime IGNORE Unexpected Discontinuity.PrevTs[271263]/CurTs[271402]
 [m3vpss ]  272426: CAPTURE: Overflow detected on VIP0, Total Resets = 1
 [m3vpss ]  272444: DEI     : Loading Up-scaling Co-effs
 [m3vpss ]  272444: DEI     : Co-effs Loading ... DONE !!!
 I think the err is caused by 4 asynchronous CVBS input. Is it right? How can I solve this problem?