PS3 cannot play HD clips encoded in the matroska format, popularly known as MKV format . PS3 mostly supports MP4 containers with h.264 video and AAC-LC audio. The good news is that the MKV is just a container for H.264 HD format video. Therefore, the video need not be re-encoded. It just have to extracted from the MKV container and pasted into the MP4 container. However, MKV files contain uncompressed audio files in the PCM/WAV format. So these audio files have to extracted and converted to the lossy low complexity AAC formats. The LC in AAC-LC stands for low complexity. It is pretty easy to do. The required steps are same for Linux, Mac or Windows but the softwares used might be different. I would focus on Linux only. The video repackaging steps are taken from http://askubuntu.com/questions/50433/how-to-convert-mkv-file-into-mp4-file-losslessly . The audio part is mine. 1. Reconnaissance -- Find which channels contain which format. mkvmerge --ident...