RTP H264 stream decode Error ?

[gcoolman_eric]

Hi all,

I want to decode RTP video stream with h264 codec and save it to mpg2 file, so i generate a h264 streamfile

by using rtpdump in wireshark, and execute a command:

umc_h264_dec_con.exe -fyuv420 -i h264dump.h264 -oh264out.yuv,

butalways encountering an error message "Video Decoder creation failed"?

I was wondering if anyone could address this problem for me that would be greatly appreciated.

Thanks in advance.

Eric

[Chao_Y_Intel]

Hello Eric,

The h264dump.h264 does not look to be correct: Does it include the IDR frames ( like SPS, PPS, video header information).

You can attach the video here, so users here may help to have check.

Thanks,
Chao

[gcoolman_eric]

Hi Chao,

Enclosed is my test file, please check it.

For decoding RTP streams with h264 codec by IPP, I have two questions below:

1. Couldyou please give me any idea about how to extract these bitstream from packets correctly ?
2. What is the correct video format in order to feed into IPP decoder "umc_h264_dec_con.exe" ?

Regards
Eric

[Chao_Y_Intel]

Eric,

I just checked your file with other tools( FFMPEG etc). It fails as well. The simpleplayer can take the raw H.264 stream (bit stream format).

I am not sure about the output of rtpdump in wireshark. I just did a quick search, it looks it produce a different output here: http://www.cs.columbia.edu/irt/software/rtptools/#rtpdump

Thanks,
Chao