Encode example application in ezsdk5.04 with DM8168

Shabbir Limdiwala

Expert 2060 points

Hi,

I have installed ezsdk 5_04_00_11. I have build omx and its example applications successfully.

I am trying to running encode example application with bellow mention parameters,

./encode_a8host_debug.xv5T -i sample.yuv -o sample.h264 -f 60 -b 1000000 -w 1920 -h 1080 -c h264

here I am giving 1920*1080 yuv420semiplanner with 60 fps 1000000 bitrate as a input which gives me encoded (h264) output in sample.h264.

But When I play sample.h264 in my VLC player, the quality of the video is not appropriate and seems different from the input.

Am I doing anything wrong with this ?

Note: I am using DM8168 multimedia processor.

Quick response will be appreciated.

Shabbir Limdiwala

over 12 years ago

0 Vimal Jain over 12 years ago

TI__Expert 6535 points

Shabbir,

1 Mbps for HD video is quite low bitrate, and quality would not be good.

Regards

Vimal

0 Shabbir Limdiwala over 12 years ago in reply to Vimal Jain

Expert 2060 points

Hi Vimal,

Thanks for the answer.

But Video quality is also not good if i set bit rate to 10Mbps.

This application gets unrecoverable error event from the component when i set bit rate more then 10Mbps.

According to you what is preferable bit rate for HD video ?

Thanks,

Shabbir

0 Vimal Jain over 12 years ago in reply to Shabbir Limdiwala

TI__Expert 6535 points

Hi,

10 Mbps should be good enough. ( It varies on use cases ). Stream supplied with EZSDK (for decode_display) has ~24 Mbps rate. Encode application should not restrict the bit rate to 10Mbps ! It could be mismatch in parameters required for higher bit rate. Please set the codec properties (profile/level etc) based on codec user guide. ( available in EZSDK).

Regards

Vimal

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Encode example application in ezsdk5.04 with DM8168