Where do encoded files go from Demo in Matrix Launcher?

P W

I am using DM816x-EVM, and I see there are following options when I clicked Multimedia Demos button on Matrix launcher.

1. 1080p60 Encode+Decode(requires Daughter card)
2. 1080p60 Decode and Display on HDMI
3. 1080p60 Capture and Encode(requires Daughter card)
4. GStreamer 1080p60 Decode and Display on HDMI

Q1 Could you tell me where the encoded file is saved for number 3 option? And what codec is it using? One more important question is, how can I stop capture-encoding once I click Run button?

Q2 When I clicked the option 1, it shows some video pipeline diagram. The one thing I don't understand on the diagram is, after the Encode block. Could you tell me what happens after the encode block? If it is saved into a file, where is it saved?

Your reply would be much appreciated. Thanks,

over 13 years ago

0 Sachin Thathgur over 13 years ago

TI__Prodigy 495 points

Hi P.W.

The answer to 1 query is

It dump the encoded (h264) stream at /usr/share/ti/ti-omx with the name of sample.h264.

When you launch the number third option it runs the runCaptureEncode

It is present at file system /targetfs/usr/bin/runCaptureEncode

Open this file you can find the below command to excute the ILclient for capture.

“ cd /usr/share/ti/ti-omx

./capture_encode_a8host_debug.xv5T -o sample.h264 -m 1080p -f 60 -b 1000000 -n 1000 -d 1

“

The answer to 2nd query is

When you click on first icon it calls runOMTB. It is present at same path /targetfs/usr/bin/runOMTB.

“execute_omtb()

cd /usr/share/ti/ti-omtb

./omtb_dm81xxbm_a8host.xv5T dual_display_encode_decode.oms

“

Right now the output of encode is disable, if you want to enable the output. Open the dual_display_encode_decode.oms which is present at /usr/share/ti/ti-omtb. Un comment the below line.

omx setp 0 h264venc data_opmode file

#To enable write to SD card change mode to file

omx setp 0 h264venc data_opmode file

omx setp 0 h264venc outfile /usr/share/ti/data/videos/dm816x_1080p60_encode.264

It will encode the file and dump it at /usr/share/ti/data/videos/dm816x_1080p60_encode.264.

Thanks and regards

Sachin Kumar

0 P W over 13 years ago in reply to Sachin Thathgur

Intellectual 580 points

Thanks for your replies. Sachin. You answered most of my questions.

But is there a way to stop encoding when I used 3rd option? (Capture + Encode) Since now if I start the option3, I don't see any button to stop encoding.

Thanks~!

0 Sachin Thathgur over 13 years ago in reply to P W