FFMpeg hello world failed

Question

I'm new to the ffmpeg development.

I've got my ffmpeg via ffmpeg.mplayerhq.hu/download.html using

   `git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg`

My OS is Win7. I'm using Cygwin to help me work under a Unix-like environment.

I'm using tutorial code from http://dranger.com/ffmpeg/ffmpeg.html. My current code is Tutorial01.

So I've got my gcc, ffmpeg and code together. Working directory is /ffmpegDemo,

code: /ffmpegDemo/tutorial01.c

ffmpeg: /ffmpegDemo/ffmpeg

And I use command gcc-I ffmpeg -o t01 tutorial01.c to compile my code. (cygwin doesn't support "copy", here're just some major message:)

libavutil/avconfig.h: No such file or directory

...

error: 'CODEC_TYPE_VIDEO' undeclared

...

and others are just warnings.

Indeed, there's no avconfig.h under ffmpeg/libavutil. I've looked for 'CODEC_TYPE_VIDEO', here's this reference: http://cekirdek.pardus.org.tr/~ismail/ffmpeg-docs/avcodec_8h.html says that 'CODEC_TYPE_VIDEO' is defined in libavcodec/avcodec.h. I've checked avcodec.h and didn't find any.

I was very confused about this error and confused about all the "configure" and "make" things that I saw while searching for answer. Am I doing it wrong? Did I miss some steps? Hope that I could find an answer here.

Thanks.

Answer 1

Did you try to compile it with the the command provided by tutorial?

gcc -o tutorial01 tutorial01.c -lavutil -lavformat -lavcodec -lz -lavutil -lm

There are lots of API changes in FFMpeg and the tutorial hasn't been updated for a while. But I believe at least tutorial01 should work.