DVRRDK encoder JPEG quality

Thomas Lo

Expert 1560 points

The platform I am using is DVRRDK 4.0 on DM8168.

Does the parameter targetBitRate of EncLink_ChDynamicParams for JPEG encode take any effect?

I tried increasing this value but the output size of the JPEG doesn't change.

If not, how could I improve the quality of the JPEG stream? Thanks

over 11 years ago

0 Thomas Lo over 11 years ago

Expert 1560 points

is that I have to migrate the JPEG encoder to REL.500.V.MJPEG.E.IVAHD.01.00.14.00 as stated in http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/323662/1131615.aspx in order to get a higher quality JPEG?

If yes, after migration, which parameter should I set? targetBitrate or quality factor?

Thanks

0 Sivagamy Govindasamy over 11 years ago in reply to Thomas Lo

TI__Expert 6950 points

targetBitrate parameter changes should take effect after taking up the patch in the post.

0 Thomas Lo over 11 years ago in reply to Sivagamy Govindasamy

Expert 1560 points

Do I need to migrate to REL.500.V.MJPEG.E.IVAHD.01.00.14.00 encoder release as stated by Bachi?

or simply using the patch is enough already?

Thanks

0 Badri Narayanan over 11 years ago in reply to Thomas Lo

TI__Guru 59700 points

You need to migrate to REL.500.V.MJPEG.E.IVAHD.01.00.14.00. Applying patch is not sufficient. On the older codec version you can try adjusting qp as indicated in the below link

http://www.deyisupport.com/question_answer/dsp_arm/davinci_digital_media_processors/f/39/t/53600.aspx

Processors

Processors forum

DVRRDK encoder JPEG quality