I can't encode blu-ray video

[Lazare Londaridze]

Hello everyone, how are today?
Here's my problem:
I'm trying to encode anime video using MKVExtract Gui and MyMP4Box Gui. I extract video and audio tracks from MKV but when I try to mux it with myMp4box something weird happens, audio track won't open at all and video track doesn't mux. When I press mux absolutely nothing happens.
When I press mux many times error dialogue box pops up saying: This BackgroundWorker is currently busy and cannot run multiple tasks concurrently.
Everything's fine when I try this with other videos, please tell me what to do.

[Baldrick]

One thread is enough. I deleted your other threads.

Do not use mkvextractgui. Try instead gmkvextractgui.

[Baldrick]

Okey. YOu could extract the video okey.

But I would try MKV2MP4 directly with the mkv files you have. Mymp4boxgui has not been updated with latest mp4box for a long time.

And MKVs are not any blu-ray video. Moving you to our video encoding section.

[Lazare Londaridze]

okay, gmkv didn't work. Tried MKV2MP4 , does this convert with a loss less quality ? File size decreased

[Baldrick]

MKV2MP4 shouldn't reconvert but if your mkvs contains some uncommon video or audio codecs it might have to reconvert.

Did it take some minutes or hours to convert to mp4? If just some minutes you wont lose any quality.

How much smaller?

[Lazare Londaridze]

Okay something weird happenes, in the end it says 0 files proceeded, 1errors. Why does this happen ?

[Lazare Londaridze]

Hmm, I didn't notice 2 new videos appeared, 1 is broken second one is converted. It took about 2 minutes and from 1.3 GB it went down to 1 GB. Am I loosing any quality here?
And what is variable framerate? Do I change that to 5.1?