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• Python UnicodeEncodeError : 'charmap' codec can't encode

  8 août 2015, par Tony Roczz

  I have been fiddling with python geopy and I tried the basic commands given in the documentation. But I am getting the UnicodeEncodeError when trying the raw command(to geolocate a query to an address and coordinates)

  print(location.raw)

  Error UnicodeEncodeError: 'charmap' codec can't encode character '\xa9' in position 83: character maps to <undefined></undefined>

  Then I tried the other way around (To find the address corresponding to a set of coordinates)

  print(location.address)    

  I am getting the same error UnicodeEncodeError: 'charmap' codec can't encode character '\u0101' in position 10: character maps to <undefined></undefined>

  I tried print((location.address).encode("utf-8")) , now am not getting any error but the output printed is like this b'NH39, Mirz\xc4\x81pur

  and when using print((location.raw).encode("utf-8")) I am getting error

  AttributeError: 'dict' object has no attribute 'encode'

  Can anyone tell me what is going on here and what I should do to get a proper output ?

  Edit :(After being marked as duplicate)

  Based on the solution given in this problem I am reporting on how it does not solve my problem

  What I wanted to know is why do I get the UnicodeEncodeError when trying out the basic sample codings given in the documentation and it did answer for that.

  If I want to use it an application how do I solve the error and I cannot have the application running on separate IDE or send the output to a external file since my application will function based on the output from geopy, I want the application to run in the terminal as my other applications do.

• OpenCV and RTMP

  28 mai 2014, par user2723463

  I want to be able to create an application that can read and publish an RTMP stream.

  Using OpenCV i could read rtp due to it’s ffmpeg backend.

  Stream video from ffmpeg and capture with OpenCV

  C++ RTMP is another possibility, but this is an RTMP server so it mainly requests and sends files. Although open source, i am unsure how to build or integrate this into a Visual Studio application in such a way as to make the function calls available to my project.

  OTher sources indicate that OpenCV’s RTSP isn’t great.

  http://workingwithcomputervision.blogspot.co.nz/2012/06/issues-with-opencv-and-rtsp.html

  How can you run a streaming server, such as RTMP C++ and get the raw data out. OpenCV can encode and decode image data for streaming, but how can you link the two ?

  Could a C++ application pipe a stream together ? How could i interface with that stream to send it more images ? Also, for receiving images ?

  Regards,

• Create H.264 stream from single PNG

  28 avril 2017, par Jim Rhodes

  I have an application that uses RTSP to get a video stream from an IP camera. The application extracts the H.264 data from the RTP packets and sends it to a remote process that decodes the stream (using ffmpeg) and displays it. If the video stream is interrupted for any reason, I would like to insert a static image into the stream being sent to the remote process.

  I have a PNG that is the same resolution as the camera. I thought I could use ffmpeg to encode the PNG to H.264 to get an IFrame that I could insert into the stream but I have not had any success. Using ffmpeg I created an MP4 with H.264 encoding from the PNG image and then extracted what I believed was the H.264 data from the MP4 but when I try to decode it ffmpeg returns an error.

  Anyone have any ideas on how I could accomplish this ?