[MPlayer-users] jpeg to avi has blank frames and sticks to first frame

[Philip Walden]

Philip Walden wrote:

> Rich Felker wrote:
>
>> On Sat, Jun 25, 2005 at 08:40:42PM -0700, Philip Walden wrote:
>>  
>>
>>> Philip Walden wrote:
>>>
>>>   
>>>
>>>> I am trying to covert jpeg images from my webcam into a movie using 
>>>> the following command.
>>>>
>>>> mencoder mf://\*.JPG -mf fps=4:type=jpg -ovc lavc -lavcopts 
>>>> vcodec=mpeg4 -oac copy -o output.avi
>>>>
>>>> It processes 152 files (IMAGE.00000.JPG - IMAGE.00152.JPG). See 
>>>> mencoder output below.
>>>>
>>>> However, there are two problems:
>>>>
>>>> 1. between each frame there is a short "black or blank" frame.
>>>> 2. mplayer replays the first image over and over for the duration of
>>>>    the movie
>>>>
>>>> I can't seem to spot the problem
>>>>     
>>>
>>> Somehow I think this is related to a problem with the mf://\*.JPG 
>>> specification.
>>>
>>> I now have nearly a 1000 jpegs.
>>>
>>> The first 100 frames of the rendered movie seem to alternate between 
>>> a the first and a blank frame, then it switches to alternating 
>>> between the first and a frame much further along. As the movie 
>>> progresses, the frames slowly change but always are out of order.
>>>
>>> I had assumed the mf://\*.JPG would select jpegs in sorted order. Is 
>>> this a bad assumption? If so, how does one specify the order?
>>>   
>>
>>
>> It's supposed to select them in order. By the way, what os are you
>> using? Maybe it's broken on some..? If you think there's a bug you
>> should submit all the information needed for a bug report.
>>
>> Rich
>>  
>>
> Linux 2.4.20-31.9 #1 Tue Apr 13 17:38:16 EDT 2004 i686 athlon i386 
> GNU/Linux
>
> I found a report on LinuxQuestions with same problem:
>
> http://www.linuxquestions.org/questions/showthread.php?s=&threadid=322764&highlight=jpg+to+avi 
>
>
> They are using 1.0pre7-3.3.5, so it looks like a current problem.

I downloaded and built MEncoder 1.0pre7-3.2.2.

I still have the same problem, so I I'd like to submit a bug report