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Marvin_C_
Beginner
84 Views

MSS R6 test result

Hi Sir:

We use Artesyn PCIE-7207 card with MSS R6 to do the transcoding, OS is Centos7.

The attached file is the test result, we only use one cpu to do the transcoding.

As you can see, if transcode 1.h264 1080p file to 720p, test result is not linear.

Ex: Transcode 1 1080p to 720p channels takes 44.16 sec, but if transcode 2 channels, only takes 63.5 sec,transcode 5 channels takes 143.66sec.

It seems if transcode more channels, average transcoding time will decrease.

Would you mind check the attached file and let me know it is reasonable or not.

Thanks.

Marvin

 

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5 Replies
Leo_Z_
Beginner
84 Views

Hi Marvin,

I'm using Artesyn PCIE-7207 card for transcoding too, may i know the code sample you used for testing,  and the video source info such as bitrate/framerate, trandcode fps? 

Marvin_C_
Beginner
84 Views

Hi Leo:

I'm using R6 PXE bootable image with MSS R6 sample code.

The video info is as below lists.

Thanks.

Marvin

Format MPEG-4
Format_Profile Base Media
CodecID isom
FileSize/String 109 MiB
Duration/String 3mn 29s
OverallBitRate/String 4 344 Kbps
Encoded_Application Lavf55.37.101
   
Video  
ID/String 1
Format AVC
Format/Info Advanced Video Codec
Format_Profile High@L4.0
Format_Settings_CABAC/String Yes
Format_Settings_RefFrames/String 3 frames
CodecID avc1
CodecID/Info Advanced Video Coding
Duration/String 3mn 29s
BitRate/String 4 083 Kbps
Width/String 1 920 pixels
Height/String 1 080 pixels
DisplayAspectRatio/String 16:09
FrameRate_Mode/String Constant
FrameRate/String 29.970 fps
ColorSpace YUV
ChromaSubsampling 4:02:00
BitDepth/String 8 bits
ScanType/String Progressive
Bits-(Pixel*Frame) 0.066
StreamSize/String 102 MiB (94%)
Marvin_C_
Beginner
84 Views

Hi All:

Any idea about this issue, would you mind check it and advise it?

Thanks.

Marvin

Jeffrey_M_Intel1
Employee
84 Views

The results you've recorded seem very reasonable.  Unlike CPU-only limitations we don't expect linear behavior.  The 5th generation processors in the Artesyn card contain multiple hardware units which can execute simultaneously.  It becomes easier to schedule work efficiently as more streams are added.  For more information on the architecture you can read 

https://01.org/linuxgraphics/documentation/hardware-specification-prms/2014-2015-intel-processors-ba...

 

Marvin_C_
Beginner
84 Views

Hi Jeffery:

Noted, thanks for your support.

Marvin

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