i.MX Processors中的主题 -3 error in VPU MPEG4 bitstream error Decoding i.mx53 WinCE

-3 error in VPU MPEG4 bitstream error Decoding i.mx53 WinCE

GuillermoHernan — Wed, 23 May 2012 17:56:49 GMT

The returned -3 in field "indexFrameDisplay" means no frame is decoded successfully:

1. No free buffer in VPU to oputput the decoded that

2. the input data is the partial of one compressed video frame

TIP: the vpu unit test DecDemo.exe is a good sample of how to use the API and verify if the bitstream is corrupted

Tarek — Thu, 15 Nov 2012 13:20:18 GMT

I'm having the same problem for i.MX6 running Linux.

I've checked that the VPU output buffers are free so it must be input data is partial.

Could you please shed some light on how to check bit stream corruption for this platform?

Thanks

GuillermoHernan — Wed, 05 Dec 2012 22:40:49 GMT

Please refer to VPU unit test code.

There are cases they should ignore outinfo (including indexFrameDisplay)

- Incomplete decoding

outinfo.decodingSuccess == 0

- Rollback triggered in rollback mode

outinfo.decodingSuccess == 0x10

There are cases indexFrameDisplay == -3 is expected

- No display output due to display reorder

Normally for first several frames, indexFrameDisplay == -3

- Skipped frame

e.g. You set skip PB mode, and the frame is P frame.

- frame buffer exhausted

confirmed it’s not your case.