ffmpeg remux wmv to mp4

[Russs]

So I'm trying to remux wmv to mp4 as MPC cant seem to handle slow motion in wmv files.

Duration: 00:24:28.10, start: 0.000000, bitrate: 9196 kb/s
Stream #0:0: Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 1280x720, 59.94 fps,
59.94 tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, 2 channels, fltp,
128 kb/s

When I try a simple ffmpeg -i file.wmv -c:v copy -c:a copy file.mp4 I get:
[mp4 @ 02e0ebe0] Could not find tag for codec wmv2 in stream #0, codec not currently supported in container
Output #0, mp4, to 'newfiles\A New Toy.mp4':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
encoder : Lavf56.4.102
Stream #0:0: Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 1280x720, q=2-31, 59.
94 fps, 1k tbn, 1k tbc
Stream #0:1: Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Could not write header for output file #0 (incorrect codec parameters ?): Error number -22 occurred


Is it not possible to remux wmv files? I'm very new to all this command stuff, the solution might be right in my face but I've not the means to see it.

Any help would be great thank-you!

[El Heggunte]

The MP4 container does not support WMV2,
you will have to convert it to a supported video format

--- MPEG-1, MPEG-2, MPEG-4 ASP, H.264, or VC-1.

According to Ben Waggoner (a moderator at Doom9's forum, who had a job at µicro$oft),
it's possible to place WMA in MP4, but probably only some obscure nerd who still works @ µ$
knows how to do that.

[Baldrick]

[mp4 @ 02e0ebe0] Could not find tag for codec wmv2 in stream #0, codec not currently supported in container

I doubt mp4 supports wmv2 video.

[Russs]

Converting to mkv works fine, mkv to mp4 after that reaches the same wmv2 stopping point. Mkv however allows slow motion features so problem be solved.