[Libav-user] How can i get just basic info from an input video file by ffmpeg?
amir.rouhi at rmit.edu.au
Wed Jul 6 08:16:56 CEST 2011
I am using DEV C++ developer under windows. Here i cant find any .lib files
like old borland c compilers.
What i have done step by step is:
Open ffmpeg.c file in DEV C++ compiler.
Set Include directory from tools/compiler options/ directories to
(There is a another setting place for libraries which i dont know i should
set it to which directory.)
Compile the program.
I get some compiler error such as:
"Line 30 In file include c:\.......libavutil\avutil.h"
Whats your advice?
On Wed, Jul 6, 2011 at 1:39 PM, Matthew Einhorn <moiein2000 at gmail.com>wrote:
> On Tue, Jul 5, 2011 at 11:15 PM, Amir Rouhi-Rmit <amir.rouhi at rmit.edu.au>
> > Please help me, I use DEV c++ compiler in windows platform. I build a
> > project in this compiler and add utils.c (with al its headers and
> > to the project, but when i want to compile the program, it does not
> > recognise all the header files used in utils.c such as #include
> > "avformat.h". It seems that i have a problem in including new library
> > or in linking. Even i add the libavecodec path for new header files
> > but still does not recognise them.
> > On Tue, Jul 5, 2011 at 4:37 PM, Clément Bœsch <ubitux at gmail.com> wrote:
> >> On Tue, Jul 05, 2011 at 04:27:16PM +1000, Amir Rouhi-Rmit wrote:
> >> > I found dump_format() function (not av_dump_format() ) among ffmpeg
> >> > source
> >> > codes : dump_format(ic, 0, is->filename, 0);
> >> You are not up to date then…
> >> > but i would be pleased if you let me know how can i find a tutorial
> >> > which
> >> > shows how can i use the function ? and which header should be
> >> >
> >> av_dump_format() is just a printing function. It is defined in
> >> libavformat/utils.c. You can look into this file how where it finds the
> >> various information it prints.
> >> If you need some examples on how to use the API, look at the ffmpeg.c,
> >> ffplay.c and ffprobe.c. Also, doc/examples contains various codes that
> >> might help you.
> >> Note: please do not top post, it is considered rude.
> >> [...]
> >> --
> >> Clément B.
> >> _______________________________________________
> >> Libav-user mailing list
> >> Libav-user at ffmpeg.org
> >> http://ffmpeg.org/mailman/listinfo/libav-user
> > --
> > Amir H. Rouhi
> > PhD Student/ CSIT RMIT University
> > Room: 14-09-04
> > rouhi_amirhossein at student.rmit.edu.au
> > amir.rouhi at rmit.edu.au
> > _______________________________________________
> > Libav-user mailing list
> > Libav-user at ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/libav-user
> Please don't top post.
> A couple of reasons why it might not work is that you have to wrap all
> the ffmpeg includes in a extern "C" declaration. Also, assuming that
> you didn't build ffmpeg yourself, did you link dynamically or
> statically? And if statically, did you link to the .lib files? You
> should include some kind of error massage, otherwise it's hard to know
> what's going wrong.
> Libav-user mailing list
> Libav-user at ffmpeg.org
Amir H. Rouhi
PhD Student/ CSIT RMIT University
rouhi_amirhossein at student.rmit.edu.au
amir.rouhi at rmit.edu.au
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