Blu-Ray player won't fast forward or rewind MKV files. What to convert it to?

I have the oohteedee version of the Original Trilogy downloaded. Though my Sony Blu-Ray player won’t let me fast forward or rewind the movies. I’ve tried via a USB and burned it to a Blu-Ray. Both the same problem.

Can someone suggest a format that I can convert it to that will be high quality, that I can fast forward and rewind, and where I can select the different audio tracks? I did convert one movie to MP4 that allowed me to fast forward and rewind, though I don’t think I was able to select the different audio tracks that oohteedee supplies with the movies.

I wonder if it could be converted to a AVCHD format burned on a Blu-Ray like what Harmy offers?

I’m not that familiar with this and I’ve searched around the internet and can’t find much info on this. And if you could recommend a free conversion software, that would help too.

Thanks

I found a program called “HD Video Converter Factory Pro” that let me convert an MKV file to MP4 while preserving the different audio tracks. I tested it on my computer and I was able to change the audio tracks. Though I wasn’t able to do this on the Blu-Ray player via USB.

So looks like I’d need to find a way to convert it to a Blu-Ray format where it would function like a Blu-Ray disc and let you select different audio tracks.

I ended up figuring out that the blu-ray player remote has buttons for “Audio” and Subtitles", which let you select the different audio tracks and turning subtitles on/off. Though still not sure what format it would be best to convert the videos to that retains full quality and lets you have multiple audio tracks and subtitles. As MKV files won’t fast forward or rewind on my blu-ray player.