DM8148 Text overlay

basavaraju Gandla

Intellectual 325 points

Hi,

I would like to overlay text on video file.

Which way is better overlaying at the time of capturing or at the time of encoding.

I want to grab the time stamp and merge a text at that particular timestamp.

Help me please.

Regards,

Baz

over 11 years ago

0 Pavel Botev over 11 years ago

TI__Guru**** 170625 points

Hi Baz,

Are you using EZSDK 5.05.02.00 / PSP 04.04.00.01?

I can provide you the below links witch discuss text overlay:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/246639/863495.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/252646.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/100/p/8456/34253.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/99/p/7466/29406.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/100/p/8314/33613.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/100/t/103956.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/136003/503734.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/273016.aspx

Regards,
Pavel

0 Margarita Gashova over 11 years ago

TI__Guru* 80190 points

Hello Baz,

What you are using OMX or gstreamer?

Margarita

0 basavaraju Gandla over 11 years ago in reply to Margarita Gashova

Intellectual 325 points

Hi Margarita,

I am using OMX.

if you have any OMX examples or OMX API's please suggest.

Regards,

Baz

0 basavaraju Gandla over 11 years ago in reply to basavaraju Gandla

Intellectual 325 points

Hi Margarita,

Any Updates please....!!

BR,

Baz

0 basavaraju Gandla over 11 years ago in reply to basavaraju Gandla

Intellectual 325 points

Hi,

Which approach do you follow,

capture -> text overlay -> Encode -> save it.

capture -> encode -> text overlay -> save it.

Thanks in advance,

BR,

Baz

0 Margarita Gashova over 11 years ago in reply to basavaraju Gandla

TI__Guru* 80190 points

Hello Baz,

I am sorry for delay.

You could check decode_display example, there we have overlay. You need to use -g 1 option when you start it.

Regarding your use cases. In OMX we are using non-tunnel method, so capture buffer data can be accessed on A8, so the application can modify the buffers before giving it to encoder.

Hope this helps.

Best Regards,

Margarita

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DM8148 Text overlay