[MPlayer-users] Converting jpeg to mpeg, interlace problem appears

[Corey Hickey]

Corey Hickey wrote:
> PFudd wrote:
>> On Mon, 2006-07-24 at 17:26 -0700, Corey Hickey wrote:
>>
>>> Hmm. I'll admit I didn't look too closely at your command line, but I 
>>> don't think there's anything in there that causes interlacing. Try this:
>>>
>>> mencoder mf://*.jpg -mf type=jpg:fps=8 -ovc copy -o output.avi
>>>
>>> If that doesn't work, then please provide enough of your source jpeg 
>>> files to reproduce the problem. Make a tar file of them and upload it to:
>>> ftp://ftp.mplayerhq.hu/MPlayer/incoming/
>>> Then send the filename as a reply to this message.
>> Actually, that *did* solve the problem!
>>
>> If you want to tinker with it anyway, the files are at 
>>   ftp://ftp.mplayerhq.hu/MPlayer/incoming/cat-table.tar.gz
>> and the old command line was
>>    mencoder mf://*.jpg -mf type=jpg:w=800:h=600:fps=8 -ovc copy -oac
>> copy -o output.avi
> 
> Ah. I suspected as much. Your input files are 320x240, but your
> w=800:h=600 tells mencoder they're 800x600. mencoder believes you, and
> the output gets mixed up. I don't know exactly why, but instead of six
> frames at 320x240, you end up with three frames at 320x480, and each
> pair of original pictures is interleaved to make the double-height
> frames. Don't worry about figuring out what is happening, though;
> forcing the wrong dimensions is bound to cause some screwiness.
> 
> Your original line can safely be reduced to:
> mencoder mf://*.jpg -mf fps=8 -ovc copy -o output.avi
> 
> type=jpg isn't needed--mencoder figures it out
> w=800:h=600 is incorrect; mencoder figures out the dimensions anyway
> -oac copy doesn't do anything because there's no audio to begin with
> 
> I'm going to remove the file you uploaded, since it's not needed anymore.

...or maybe I'm not. I thought the standard developer login could remove
files, but I guess it can't.

If anybody is listening who has a login with such permissions, feel free
to remove cat-table.tar.gz

-Corey