SKM to avi

[crossmr]

I just got over to korea and my new korean cell phone has files in SKM format. I can play those using kmplayer. However I want to convert them so I can upload them to places.
I found this tutorial here http://www.codecbox.com/bbs/view.php?id=lecture_video&page=1&sn1=&divpage=1&sn=off&ss=...desc=asc&no=24
Which is in korean but for an english program so all the screenshots are english and fairly easy to follow. Problem is I get no audio on conversion.

Anyone have any experience? I think I'm missing some codecs or something. Possibly mplayer. But I wonder if its referring to this mplayer http://www.mplayerhq.hu/design7/news.html or something else. As well as possibly an enconder.

Any help is appreciated.

[Baldrick]

Tried a gui for mencoder / ffmpeg like winff, super, etc?

[crossmr]

SKM isn't listed on super's alphabet soup of support. And winff couldn't convert it. It generates a 0 byte avi.
The tutorial specifically shows mplayer being selected to convert the file. I tried downloading mplayer, but it doesn't "install" anything, its just a stand alone player that doesn't need installation. When I try to convert in mediacoder using mplayer it claims the decoder is either absent or it can't play the specified file. My money is on absent as it doesn't know where mplayer is and there doesn't seem to be a way to set a path to it.

[Squash]

I haven't used it myself, but you might also try the GOM encoder (freeware). It claims to convert any type of file the GOM Player will play, of which .skm is one.

It's at: http://www.yankeedownload.com/software/gom-encoder-jndnj.html

Edit: Nevermind, I just downloaded it to play with and it says it's restricted by limited usage time and puts a watermark on your video. I didn't bother to install it. Sorry about that.

[crossmr]

That worked, but doesn't support rotation. Phone takes the video 90 degrees CCW. Anything I can use to rotate it?

[Squash]

I installed the GOM encoder. Didn't see any way to rotate using it. I noticed it expires June 30, prior to the release of a paid version.

After it's been converted, I'd use either Virtualdub or Avidemux to rotate it, just because that's what I know how to use. If you want to end up with something other than .avi, try Avidemux. They both have Rotate filters. However, the video will need to be re-encoded, giving you a further hit on quality, which is probably extremely low to begin with. Set the GOM Encoder target bitrate high to help minimize that.

From what I've read about the .skm format, it's a very slightly modified 3gp/3g2 container introduced by SK Telecom of Korea. Depending on how slight the modification, you may be able to just rename the file to *.3gp and use any number of converters, since 3gp is well-supported. That way you could not only avoid the GOM watermark, but convert only once, and rotate as you do it.

The new Virtualdub releases will open .3gp directly if you have the Directshow Input Driver installed, or you could use an avisynth script. I've converted a couple of 3gp files with Vdub. You'd need an AMR filter for audio, either through ffdshow or the opensource Monogram AMR pack. But you probably already have one. I'm assuming .skm uses AMR, I don't know.

But you apparently already have Super and WinFF, so rename the file to .3gp and see if they'll take it, and can rotate.

I've never seen an actual .skm file. If you'd like to upload one somewhere, or point me to one that's publically available, I'd be glad to play around with it.

[crossmr]

I know its rapidshare, but its quick:
http://rapidshare.com/files/123465267/Video080617_000.skm.html
If you can find a good way to convert that, I'd appreciate it.

[aedipuss]

it's that evrc audio that's a problem. your best bet is to email the videos to yourself from the phone and see if your carrier automatically converts them to wav audio for you. avidemux can rotate the video but barfs on the audio.

[crossmr]

Yes and converts it to AVI as well..
I don't think I have a video email plan so I'll have to limit this
But thanks!
Not ideal, but something to hold me over until I find a better way.

[Squash]

I was able to open the file in Virtualdub by renaming to 3gp and using the following avisynth script:

FFmpegSource("J:\1\Video080617_000.3gp", atrack=-2)

You'll need to download the ffmpegsource plugin for avisynth, if you don't have it:
http://forum.doom9.org/showthread.php?t=127037

Once opened, I used the rotate filter and recoded with Divx.

Vdub choked on the audio, too, like avidemux (the atrack=-2 line killed the audio so I could open the video). To get the audio, I used KMplayer's audio capture function to capture as an mp3. You could probably do the same with GOM player; they're both from Korea, I guess that's why they support SKM.

I used Vdub's "Audio from other file" to mux them.

Ran into a page which led me to believe that Mediacoder might convert EVRC audio, but if that's the program I think it is, I didn't like it at all when I tried it. Made you go to their web page everytime you opened the program or something.

I don't know how much you know about this stuff. If you want more detailed instructions, let me know and I'll be happy to oblige.

I uploaded the file here:
http://rapidshare.com/files/123487806/Video080617_000.avi.html

[crossmr]

Thank man, I really appreciate the help. I think I can stumble through this.. I don't think I've done anything with avisynth scripts yet.

[Squash]

Glad to help.

Avisynth scripts are just simple text files. Open up Notepad, type (or paste) your text in, and save as *.avs, then just open that file in Virtualdub just like you would a regular video file. There's some great tutorials at avisynth.org.

[bsktbllscks]

Just wanted to let you know. I'm also in Korea. I also have a (smart)phone that produces .skm files. Youtube will accept the skm files as is and will output sound correctly.