[Mjpeg-users] Converting container formats

2007-01-11 Thread Peter Federighi
Hello.

I was wondering if it was possible to convert between container formats
without processing the data contained within them.  For example:  Can I
convert from an AVI (MJPEG/PCM) to a Quicktime (MJPEG/PCM) without having
to decode the mjpeg frames and then re-encode them (which would lose
quality to some degree and take a very long time)?

Thanks for the help.
- Peter


 

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[Mjpeg-users] mjpegtools compilation problem

2007-01-11 Thread E.Chalaron

Hi all
Just a quick question, may the compilation problem on debian etch have 
side effects lie not compiling qttoy4m
compiling from CVS
Thanks a lot
E


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Re: [Mjpeg-users] Converting container formats

2007-01-11 Thread Steven M. Schultz

On Thu, 11 Jan 2007, Peter Federighi wrote:

> I was wondering if it was possible to convert between container formats
> without processing the data contained within them.  For example:  Can I
> convert from an AVI (MJPEG/PCM) to a Quicktime (MJPEG/PCM) without having

man lavtrans

lavtrans  - Convert MJPEG videos to other MJPEG video formats

That would appear to be the utility that you are looking for.

It will, of course, require that mjpegtools be built with libquicktime
support :)

Cheers,
Steven Schultz


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Re: [Mjpeg-users] mjpegtools compilation problem

2007-01-11 Thread Steven M. Schultz

On Fri, 12 Jan 2007, E.Chalaron wrote:

I'm having a little trouble deciphering the message ;)

> Just a quick question, may the compilation problem on debian etch have 
> side effects lie not compiling qttoy4m

Hmmm - "like not compiling qttoy4m"?

The only compilation problem I recall is C++ related - some 4.1.x
g++ compilers can not compile y4mdenoise.  Workaround was to delete
y4mdenoise from the upper level Makefile so that it wouldn't build.
A real fix requires some who knows C++ and that has not happened yet ;(

I guess the answer to the question is "no".  I can't see how not
building y4mdenoise would have any effect on qttoy4m.  

More info provide will, naturally, allow for a better and/or more 
complete answer 

Cheers,
Steven Schultz


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Re: [Mjpeg-users] mjpegtools compilation problem

2007-01-11 Thread E.Chalaron

Thanks Steven

As usual, I discovered after my email that qttoy4m (and others) was well 
here, but not installed in /usr/local/bin, like if the make install 
forgot it ...
I DO promise I did "make install"
I just made a cp to /usr/local/bin
cheers
E


> On Fri, 12 Jan 2007, E.Chalaron wrote:
>
>   I'm having a little trouble deciphering the message ;)
>
>   
>> Just a quick question, may the compilation problem on debian etch have 
>> side effects lie not compiling qttoy4m
>> 
>
>   Hmmm - "like not compiling qttoy4m"?
>
>   The only compilation problem I recall is C++ related - some 4.1.x
>   g++ compilers can not compile y4mdenoise.  Workaround was to delete
>   y4mdenoise from the upper level Makefile so that it wouldn't build.
>   A real fix requires some who knows C++ and that has not happened yet ;(
>
>   I guess the answer to the question is "no".  I can't see how not
>   building y4mdenoise would have any effect on qttoy4m.  
>
>   More info provide will, naturally, allow for a better and/or more 
>   complete answer 
>
>   Cheers,
>   Steven Schultz
>
>
> -
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> opinions on IT & business topics through brief surveys - and earn cash
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>
>   


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