18-796 Adaptmedia Midterm Report
The objective of Adaptmedia is to implement a network adaptive video encoder/decoder/player for X window system. Some of the techniques that will be explored for network adaptive video streaming are:
- PSNR scalability
- Spatial scalability
- Temporal scalability
For the midterm we have achieved the following goals as outline in our proposal:
- Create the YUV player and both the transmitter and receiver.
- Integrate the player with the receiver and decoder so that it could play a video stream on fly
- Be able to show that we could play yuv video across the network
We encountered 2 problems with the current design:
- The decoder is too slow to run real time on sun Ultra Sparc. Therefore the frame rate of the video player is bounded by the decoding rate of the decoder.
- Running on 8bit color depth, we need to allocate a private colormap which causes switching of colors whenever focus is changed between windows.
The files for our project can be found at:
/afs/cs.cmu.edu/user/aman/796/project/CMU_Codec_v3
Following is a screen capture of adaptmedia. The colors on the video window are not correct since the window focus for grabing the image was not on the video window. The current screen capture was taken using the standard colormap. When the focus is turned to the video window, the correct colormap will be used.
Diego Luis Iglesias
Last modified: Wed Mar 10 23:24:31 EST 1999