How to demux WMV8 file ..to any other format like MKV,MP4 without losing q

[prithvi]

How to demux WMV8 file ..to any other format like MKV,MP4 without losing quality


this below tiny file i want to convert/mux it to mkv or mp4 format..so that my LG tv can play it thru USB slot.
as it's not able to play these type of HD wmv files.. (may be these wmv2 codecs files... other wmv files it can play)

Complete name : C:\test 480p file.wmv
Format : Windows Media
File size : 22.7 MiB
Duration : 29mn 30s
Overall bit rate : 108 Kbps
Maximum Overall bit rate : 2 728 Kbps
Encoded date : UTC 1970-01-01 00:00:00.000
major_brand : isom
minor_version : 512
compatible_brands : isomiso2avc1mp41
WM/EncodingSettings : Lavf54.37.100

Video
ID : 1
Format : WMV2
Codec ID : WMV2
Codec ID/Info : Windows Media Video 8
Description of the codec : wmv2
Duration : 29mn 30s
Width : 854 pixels
Height : 480 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Bit depth : 8 bits

Audio
ID : 2
Format : WMA
Format version : Version 2
Codec ID : 161
Codec ID/Info : Windows Media Audio
Description of the codec : Windows Media Audio V8
Duration : 29mn 30s
Bit rate : 128 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 27.0 MiB

p.s-
i try vdub but it seems the quality goes little bit down when it saves it in .avi format :/
but i need mkv/mp4

[jagabo]

You can remux to MKV with ffmpeg (command line program):

ffmpeg -i filename.wmv -vcodec copy -acodec copy filename.mkv

Put this:

"c:\program files\ffmpeg\bin\ffmpeg" -i %1 -vcodec copy -acodec copy "%~d1%~p1%~n1.mkv"

into a batch file called "Remux to MKV.bat". (You may need to modify the path to ffmpeg to match where it's installed on your system.) Then you can drag/drop any WMV file onto it and it will be remuxed into an MKV file. Put the batch file into your SendTo folder and you can right click on any any WMV file and select SendTo -> Remux to MKV and the file will be remuxed to MKV.

I don't think you can put WMV2 and WMA in an MP4 file.

[racer-x]

Didn't know mkv supports wmv/wma. I guess you can put just about anything in an mkv container. I tested it on the "Wildlife.wmv" clip that comes with Windows and it works. I don't know why anyone would want to do this, unless your media player only excepts mkv.

[jagabo]

I don't know why anyone would want to do this, unless your media player only excepts mkv.

I had the same thought. But it's unlikely a player that doesn't support WMV files will support WMV2 and WMA in an MKV container.

[El Heggunte]

WMV in Matroska uses the so-called VfW-compatible mode: V_MS/VFW/FOURCC {WMV1, WMV2, WMV3, WVC1}
WMA in Matroska »» »» »» »» »» »» ACM-compatible mode: A_MS/ACM {0x0160 thru 0x0164}

MKVmerge cannot demux ASF files, it accepts VC-1 only as elementary streams or from MKV and TS files.
Gabest's Matroska Muxer and Haali DSMuxer have no problem with "normal" ASF files though.

[El Heggunte]

I guess you can put just about anything in an mkv container.

That depends a lot on 1) the specs themselves and 2) the available implementations

Musepack still cannot be wrapped in Matroska. WavPack can, BUT it still lacks a "perfect" solution.
A_DTS/EXPRESS is not implemented yet, and will remain so until there is a FOSS decoder for the format, I'm afraid

[MaverickTse]

Beware that using FFmpeg with WMV8 (not WMV9) can have AV-sync issue.
Double check after encode.