[LAU] [OT] a sorting problem with AVSynthesis and mencoder

Robin Gareus robin at gareus.org
Tue Nov 27 09:50:44 EST 2007


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


Dave Phillips wrote:
> Greetings,
> 
> I use the following command to invoke mencoder to compile a series of 
> TGA image files into an animation :
> 
> mencoder -ovc lavc -lavcopts vcodec=mpeg4:vme=1:keyint=30:vbitrate=1000 
> -vf scale=800:600 -noskip -mf type=tga:fps=30 -o avs-001.avi mf://*.tga
> 
> 
> (Sorry about the line breaks.)
> 
> The problem starts with the "mf://*.tga" part of the command. When the 
> AVSynthesis program creates its TGA images it saves and labels them 
> sequenctially, i.e. 1.tga, 2.tga, 3.tga and so on, as expected. The 
> problem is that mencoder reads the files as they would be returned by a 
> plain ls command, i.e. 1.tga, 10.tga, 100.tga, 1000.tga, 1001.tga 
> ...101.tga, 1010.tga, thus interpolating frames out of their correct order.
> 
> So, my question is, how do I get mencoder to read the TGA files by their 
> time of creation ? 

I'm not sure if you can

> That should do the trick, yes ? Otherwise I have to 
> separate the single digit files from the double digit files and so 
> forth, then I have to create and join separate AVIs. Not terribly 
> difficult, just really annoying and time-consuming.
> 
> Any suggestions ? Any mencoder users out there ?

yes, but when I found myself at this crossing, I choose the pragmatic
shell path:

mkdir sl; i=100000; for file in $(ls -tr *.sgi); do ln -s $file
sl/$i.sgi; i=$[ $i + 1 ]; done;

(no line breaks)

and run mencoder on the symlinks.

> Also, what do you use in place of mencoder on a 64-bit system ? (It's 
> not available for 64 Studio.)

It's not a 64-bit problem, but ffmpeg licensing issues with 64studio.

robin


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iD8DBQFHTC7EeVUk8U+VK0IRAni3AJ9X3CDdiOQPEfeRegVxMy144PfqZQCgjj45
hzzqoXr2xiAbTF+/5MmEUFQ=
=0AJp
-----END PGP SIGNATURE-----



More information about the Linux-audio-user mailing list