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3066 Discussions

Maximum bit rate obtainable with HW encoder HEVC and XAVC

francescoBLT
Beginner
‎11-06-2023 07:29 AM
659 Views

Hi 

I'm attempting to determine maximum bit rate using HW encoder HEVC and XAVC.

Reading the code :

https://github.com/Intel-Media-SDK/MediaSDK/blob/master/_studio/mfx_lib/shared/src/mfx_h264_enc_common_hw.cpp#L600

 

it seems that maximum bit rate for AVC is 360Mbit/s so I can't create XAVC class 300 @60P (bit rate of 600Mbit/s). Correct ?

I didn't find any similar function for HEVC. What's  maximum bit rate obtainable using HW encoder? 

I need to encode 4K@60 (3840x2160@60P); can I reach 600Mbit or more ?

regards

 

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JyothisV_Intel
Employee
‎11-08-2023 03:29 AM
598 Views

Hi,

 

Good day to you.

 

Thanks for posting in Intel Communities.

 

>> it seems that maximum bit rate for AVC is 360Mbit/s

 

Have you observed this while encoding any raw video?

 

Are you trying this with the latest version of the sample_encode present in the link: https://github.com/oneapi-src/oneVPL/tree/ca5bbbb057a6e84b103aca807612afb693ad046c/tools/legacy/sample_encode.

 

Reference to build oneVPL: https://github.com/oneapi-src/oneVPL/blob/master/INSTALL.md

 

Further more, we are checking with the development team and will let you know what are maximum bitrates possible for both H264(AVC) and H265(HEVC) codec and whether XAVC class 300 @60P with a bitrate of 600 Mbit/s is supported by oneVPL/MediaSDK.

 

Can you provide us with the following information in order to understand your query better:

1. Hardware/OS Versions

2. Are you using MediaSDK or oneVPL. The version of MediaSDK or oneVPL

3. Commands used for encoding along with a sample test video to replicate it from our side.

 

Regards,

Jyothis V James

 

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