First of all, i'm new in this forum so i think i haven't set this post in the wrong section.
My problem it's this:
I got an MKV file (Matroska Video File) with subtitles of 293 MB with the size of 1280 x 720 HD
What i wanna do it's convert it to another file format without losing quality.
First i used Xilisoft Video converter wich gave me great results but the file size are like the double the original.
so the best way should be mp4, watching tutorials and reading a LOT i found a way to do that, using
MKVcleaver_x64
and
Mp4Box 0.5.5.4
First i split the files into 1 video file h.264 and an audio file wich normally is Audio ADTS (.aac)
so far everything goes fine, but when i open mp4 box, and import all the files and click on mux,
The output is a perfect mp4 BUT the audio dosen't sync with the video at all and in some parts it even cuts. The vide runs perfectly though, and the quality it's just fine.
So what's happening? I tryed converting the audio file to mp3 and it is still the same, the audio dosen't sync.
i though it was the codecs so i installed only CCP and CoreAVC i can't find a solution for this problem.
Please if someone would be so kind to tell me what's happening.
Here's the info of the Vid that Gspot gives me

I don't have any problems with mp4 files only when i mux them like i explained above.
I have Windows 7 Ultimate 64 Bits
My Pc has a GTX Force 580
Asus Sabertooth P 67
8 GB ram
1 TB hardriveThank u for the help.