TDA2HG: Use H264 encode in gstreamer will make frame out of oder

Tim-ckt1010

Part Number: TDA2HG

Hi,

I used MPEG4 to encode video which works fine. My command:

gst-launch-1.0 -e cameravpf name=camerasrc channel=4 recordtype=event ! video/x-raw,format=NV12,width=1280,height=720,framerate=30/1 ! ducatimpeg4enc  bitrate=4096 ! mpeg4videoparse ! qtmux  ! filesink location=/userdata/11.mp4

But now for improve DDR bindwidth on IVA, I need swith it to H264. My command:

gst-launch-1.0 -e cameravpf name=camerasrc channel=4 recordtype=event ! video/x-raw,format=NV12,width=1280,height=720,framerate=30/1 ! ducatih264enc profile=100 entropy-coding-mode=1 inter-i
nterval=2 bitrate=4096 ! h264parse ! qtmux  ! filesink location=aaa.mp4

The mp4 file below I got has problem. And the frame seems out of order. Since from video, I wave hand from top to bottom, it will jump back to top when at the middle.

Did I miss something?

Thanks!

BR/Tim

over 4 years ago

0 Gaviraju Doddabettahalli Bettegowda over 4 years ago

TI__Genius 14305 points

Hi,

Can you set the inter-interval property to 1 then let's see the output.

Thanks

Gaviraju

0 Tim-ckt1010 over 4 years ago in reply to Gaviraju Doddabettahalli Bettegowda

Expert 1685 points

Thanks Gaviraju! I use command below It works fine now.

gst-launch-1.0 -e cameravpf name=camerasrc channel=4 recordtype=event buffer-num=3 ! video/x-raw,format=NV12,width=1280,height=720,framerate=30/1 ! ducatih264enc profile=100 entropy-coding-mode=1 inter-interval=1 bitrate=4096 ! h264parse ! qtmux  ! filesink location=aaa.mp4

But the IVA DDR bandwidth still have 145MB/s. From TDA2xx performance document told that 720p H264 decode mega cycles per second is small than 80, so I think 145MB/s encode bandwidth is not reasonable.

Do you know which command can I use to reduce DDR bandwidth?

Thanks!

BR/Tim

0 Gaviraju Doddabettahalli Bettegowda over 4 years ago in reply to Tim-ckt1010

TI__Genius 14305 points

Hi,

You are referring the decoder performance data sheet & you should refer the encoder performance data sheet because we are encoding the stream.

Thanks

Gaviraju

0 Tim-ckt1010 over 4 years ago in reply to Gaviraju Doddabettahalli Bettegowda

Expert 1685 points

so do you have encode performance data sheet? I can't found it.

Thanks

0 Gaviraju Doddabettahalli Bettegowda over 4 years ago in reply to Tim-ckt1010

TI__Genius 14305 points

Hi,

Please refer the : file: ti_components/codecs/ivahd_h264enc_02_00_09_01_production/packages/ti/sdo/codecs/h264enc/docs/H264_Encoder_HDVICP2_DataSheet.pdf

Note: Encoder performance is depends on the parameter settings.

Thanks

Gaviraju

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TDA2HG: Use H264 encode in gstreamer will make frame out of oder