Demuxed MKV to h246, cannot seem to convert it because it is 0:00 long

[whatisthis]

I demuxed a 15GB h246 video track from a 17GB MKV file using MKVExtractGUI2 to get rid of the subtitle tracks, and I'm trying to remux it into an MKV file (or convert it to some other HD format) but when I've tried opening it in Any Video Converter, MKVmerge, and even VLC player, each time it has shown that the file has a length of 0:00. When I open it in VLC, the file will still play correctly, but the timeline doesn't seem to know how long the video is, as it says 0:00 for the current time, and 0:00 for the end time as well.

I'm trying to edit the video in Sony Vegas, but since Vegas doesn't open MKV files, I was trying to convert it to another format with the minimum amount of quality loss possible. This would be as easy as converting the MKV to a different file type, but unfortunately the MKV file has subtitles included. The only way I know of to convert the MKV without including the subtitles is to demux it, and remux it without the subtitles file, but I can't seem to remux the h246 file because Any Video Converter, and MKVmerge both think that it has a length of 0:00.

Any Video Convert seems to just freeze, MakeMKV doesn't even see the h246 filetype, and MKVmerge gives the error "Error: The source file 'filename' could not be opened successfully, or retrieving its size by seeking to the end did not work".

Is there any other way to convert an MKV without including the subtitle tracks, or is there any way to make the h246 file display it's actual length?

MediaInfo:
Format : AVC
Format/Info : Advanced Video Codec
File size : 15.6 GiB

Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Width : 1 920 pixels
Height : 1 038 pixels
Display aspect ratio : 1.85:1
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

[davexnet]

Demux the media you want from the MKV, then build a new MKV using just those items.
Use that in your project.

[whatisthis]

I already tried that

Any Video Convert seems to just freeze, MakeMKV doesn't even see the h246 filetype, and MKVmerge gives the error "Error: The source file 'filename' could not be opened successfully, or retrieving its size by seeking to the end did not work".

But what program would you suggest using?

[poisondeathray]

to remove the subs, use mkvtoolnix, uncheckmark the subs or any other streams you don't want

[whatisthis]

to remove the subs, use mkvtoolnix, uncheckmark the subs or any other streams you don't want

That appears to be working! From here I should be able to use Any Video Converter to convert the file into whatever format I want! Thanks!