I want to record data from Tango with Tango Ros Streamer and save them into a bag by command:
rosbag record -a
When i visualize sequence of image in this bag, i realize the frame rate is extremely slow.
Do you have any idea to modify or fix frame rate with this application?
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1 Answers
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The theoretical wifi bandwidth is 11 megabits.
- One 1280x720 YUV image: 1280*720*1.5 = 1.3824 megabits
- One 24fps stream of these images: 24*1.3824 megabits = 33.18 megabits
So you cannot transmit the native stream of RGB images over WiFi.
That is why in the source code of the Tango Ros Streamer app you will see
constexpr double COLOR_IMAGE_RATE = 8.; // in Hz.
You can either modify the code of this app to decrease the size of the images and increase the COLOR_IMAGE_RATE, either you want the full resolution and you can create an application which saves all the images on the device.
