Cinepak encoder?

[hellocatfood]

Is there a way to encode video using the Cinepak codec on Linux? FFMPEG can only decode.

[jagabo]

You could use VirtualDub and ffdshow under Wine. I assume you're aware that Cinepak is very old and outdated.

[hellocatfood]

You could use VirtualDub and ffdshow under Wine.

Where possible I'd like to use only native Linux apps. Are there any for Linux?

I assume you're aware that Cinepak is very old and outdated.

Yeah. I need it for a very specific purpose

[jagabo]

Are there any for Linux?

Not that I know of. But I don't have much experience with Linux. I think the problem is that Cinepak is so old (and proprietary) that nobody has bothered porting it to Linux.

[El Heggunte]

Mencoder can use the VfW dlls
(I know this works on Windows,
not sure if it works on Linux as well) :

http://www.mplayerhq.hu/DOCS/HTML/en...r-windows.html

[jagabo]

oops, nevermind.

[hellocatfood]

Mencoder can use the VfW dlls
(I know this works on Windows,
not sure if it works on Linux as well) :

http://www.mplayerhq.hu/DOCS/HTML/en...r-windows.html

Thanks! Looks like I'm some way there. I've got the iccvid.dll file on my computer (probably from medibuntu).

It looks like I've only got one more hurdle to jump over.

From running this code

mencoder infile.avi -vf format=bgr15 -ovc vfw -xvfwopts codec=iccvid.dll -oac mp3lame -o outfile.avi

I get this error:

Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.

If I swap around the order of the code I get a segmentation fault. Can you tell me where I'm going wrong?

[jagabo]

Cinepak requires RGB24 or RGB32 as input. I think the argument you want is "-pix_fmt rgb24".

[hellocatfood]

Just to clarify my issue I'll provide a sample video and my process. I'll be working with this short clip http://ubuntuone.com/p/iJr/

I converted this to an avi in the rgb24 colourspace

ffmpeg -i vid.mov -vcodec png -pix_fmt bgr24 outfile.avi

I then tried to convert this to an avi that uses the cinepak codec

mencoder outfile.avi -vf format=bgr24 -ovc vfw -xvfwopts codec=iccvid.dll -oac mp3lame -o outfile_2.avi

This is where I got my segmentation fault:

MP3 audio selected.
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
Opening video filter: [flip]
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
[swscaler @ 0xb6315fc0]using unscaled rgb24 -> bgr24 special converter
Opening video filter: [expand]
Expand: -1 x -1, -1 ; -1, osd: 0, aspect: 0.000000, round: 1
Starting compression:
 Input format:
  biSize 40
  biWidth 1280
  biHeight 720
  biPlanes 1
  biBitCount 24
  biCompression 0x0 ('')
  biSizeImage 2764800
 Output format:
  biSize 40
  biWidth 1280
  biHeight 720
  biPlanes 1
  biBitCount 24
  biCompression 0x64697663 ('cvid')
  biSizeImage 254100
 Output format after query/begin:
  biSize 40
  biWidth 1280
  biHeight 720
  biPlanes 1
  biBitCount 24
  biCompression 0x64697663 ('cvid')
  biSizeImage 254100
Segmentation fault

Just to be sure I tried this code with both bgr24 and rgb24 arguments. Same results

I'm surprised that it still tries to convert to bgr24 when I've specifically told ffmpeg to use bgr24 in the first place.

As for the segfault, is this a problem with the software or the video that I'm using?

[El Heggunte]

Hummm...

--- the file "vid.mov" is not a .MOV, but a .AVI, to begin with

--- on my XP machine, only ffplay and Mplayer can display something besides 100%-black frames, and that something includes huge artifacts

Are you using outdated versions of both ffmpeg and Mencoder?

[hellocatfood]

After I updated to the latest Ubuntu (11.04) I updated ffmpeg and mplayer/mencoder to the svn versions and still got segmentation faults. It appears the problem comes from the version of iccvid.dll that comes from the w32codecs package from medibuntu. As described in this bug report the version that is supplied is corrupted in some way, hence the segfaults. After I found an old version from a Windows 98 cd encoding worked for me