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2012-05-29 23:50:05 -0500 answered a question Streaming theora

The trasmision works. I am able to send and receive video compressed topic. The stranger aspect is that, although the topic is received (verified by echo). I can visualize it only if the image view is opened on the sender and receiver side and before the capture starting.

Any idea about that?

2012-05-29 23:45:36 -0500 answered a question Streaming theora

I m able to send the correct topic, that are received correctly. I can visualize the video compressed but only if previusly the image_view is running on the received and the sender side and before starting capture on the sender side.

2012-05-27 23:16:50 -0500 asked a question Streaming theora

Hi all, I am streaming video captured by web cam. I use the usb_cam node to capture and compress video using theora codec and the image_view node to play the stream. In order to transport data from a computer to another remote one via wireless, I use the ros_rt_wmp node (our node that implements a multihop protocol).

It works, but with some "strange aspects". Video data reaches the remote node, and with remap to the image_view node , but I am able to see the video ONLY if this image_view node is already opened in the receiver computer and on the SENDER computer. If not, data reaches destination computer but aren't played by the image_view.

Any idea about that?

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2012-05-23 05:02:44 -0500 commented question image_view problem

no, I haven t. i use a node (ros-rt-wmp , implementet for us) that allows wireless transport.it works property with another flows info(laser, voice, pics etc) . I think is do for the usingo of theora, because on local use, raw data works properly. Anyone had use Theora on his experiments? Tx

2012-05-23 04:05:11 -0500 asked a question image_view problem

Hi all, i have some problem using image_view. On the same computer, image_view playes the topic only if it is opned before the rosrun of capture node.

Moreover, I need to transfer the theora image wia wireless. I am able to do that, topic is correctly created and read for the image view but images do not appear. anyone knows why? Thanks in advance

2012-05-22 23:56:34 -0500 commented answer how stream theora topic

TX a lot!my fault was i did not include the theora dependece on my manifest. Now my remote node receive the topic /video, but something is wrong with the image_view. I use:"rosrun image_view image_view image:=/video theora "but topic video does not arrive to the image_view node (rxgraph).Any idea?

2012-05-22 06:34:06 -0500 answered a question how stream theora topic

Thanx for your rapid answer. My problem is how use the data type of topic theora_image_transport/Packet.

In order to define a subscriber topic, how include .h I have to include?

2012-05-22 01:40:47 -0500 received badge  Scholar (source)
2012-05-21 06:46:59 -0500 asked a question how stream theora topic

Hi all, I performing a teleoperating experiment via webcam vision and using the wireless channel to transport the date, so i am interested on using the theora data compression.

Using usb_cam_node, rostopic list command shows me the topic /usb_cam/image_raw/ and /usb_cam/image_raw/theora etc.

Using the the command:

rosrun image_view image_view image:/usb_cam/image_raw/, video is streaming but I am not able to undestand how view the theora topic: /usb_cam/image_raw/theora .

Anyone could help me?