License

PM2V is still in development, the version that you can download here is an alpha release and is not fully functionnal.

In august, I will start my military service for 10 months. So don't expect any changes or modifications of the project.

PM2V has been tested on a 5 seconds sequence of non-interlaced video (98 frames). Each frame was in resolution 720x352.

We have the following results on an IBM SP2 with 16 nodes.

Speed: (in seconds)

Efficiency (in %)

Results were pretty good up to 6-8 processors where we have an efficiency of 65%.

We have also tested on a Sun Enterprise 450 with 4 processors (SMP), results are available in the report which is downloadable in the "Download" section.

• Coding of interlaced pictures is not tested and is not expected to work.
• An overflow in the bit counter imposes the MPEG II stream to be shorter than 2 gigabits.

• Fix the overflow in the bit counter.
• Fix the coding of interlaced pictures.
• Decrease the amount of data exchanged by each processor to avoid overloading the network in case of LAN.
• Estimate the number of coded bits for each processor to parallelize putpict() function.