Error while compiling it on Linux Arch

[SimonSimCity]

Hi,

Today I tried to compile this script on Linux Arch and got the following error:

[root@aristoteles untrunc-master]# g++ -o untrunc file.cpp main.cpp track.cpp atom.cpp mp4.cpp -L/usr/local/lib -lavformat -lavcodec -lavutil
track.cpp: In member function ‘void Track::parse(Atom*, Atom*)’:
track.cpp:211:47: error: ‘avcodec_open’ was not declared in this scope
     if(avcodec_open(codec.context, codec.codec)<0)
                                               ^

Is there a dependency missing? Should not, as I have ffmpeg installed, what also requires the libs you included for ubuntu.

[jcul]

You need to tell the compiler where to look for the includes and libraries.

On arch linux, it's /usr/lib and /usr/include. However, this didn't work for me, as I think in the latest version of libavcodec the deprecated function avcodec_open has been removed.

g++ -o untrunc file.cpp main.cpp track.cpp atom.cpp mp4.cpp -I/usr/include -L/usr/lib -lavformat -lavcodec -lavutil

I had to change it to use the ones that seem to be provided with ffmpeg-compat.

So install ffmpeg-compat, and then the following should work (or at least it did for me).

g++ -o untrunc file.cpp main.cpp track.cpp atom.cpp mp4.cpp -I/usr/include/ffmpeg-compat -L/usr/lib/ffmpeg-compat -lavformat -lavcodec -lavutil

Unfortunately untrunc wasn't able to fix my friend's mp4. It got it playing with just audio and no video.

[ragesoss]

Any tips on getting around the avcodec_open problem on Debian?

UPDATE: Nevermind, I looked at some of the other issues and am now trying thye manual installation of libav.

[alejandro-colomar]

Did you manage to install on Debian?

I am getting these errors:

# g++ -o untrunc file.cpp main.cpp track.cpp atom.cpp mp4.cpp -L/usr/local/lib -lavformat -lavcodec -lavutil
track.cpp:30:0: warning: "__STDC_LIMIT_MACROS" redefined
 #define __STDC_LIMIT_MACROS 1

In file included from /usr/include/c++/6/cstdint:41:0,
                 from /usr/include/c++/6/bits/char_traits.h:420,
                 from /usr/include/c++/6/string:40,
                 from track.h:25,
                 from track.cpp:21:
/usr/lib/gcc/x86_64-linux-gnu/6/include/stdint.h:5:0: note: this is the location of the previous definition
 #  define __STDC_LIMIT_MACROS

track.cpp:31:0: warning: "__STDC_CONSTANT_MACROS" redefined
 #define __STDC_CONSTANT_MACROS 1

In file included from /usr/include/c++/6/cstdint:41:0,
                 from /usr/include/c++/6/bits/char_traits.h:420,
                 from /usr/include/c++/6/string:40,
                 from track.h:25,
                 from track.cpp:21:
/usr/lib/gcc/x86_64-linux-gnu/6/include/stdint.h:7:0: note: this is the location of the previous definition
 #  define __STDC_CONSTANT_MACROS

track.cpp: In member function ‘int Codec::getLength(unsigned char*, int)’:
track.cpp:204:40: error: ‘avcodec_alloc_frame’ was not declared in this scope
   AVFrame *frame = avcodec_alloc_frame();
                                        ^
track.cpp:213:18: warning: ‘int avcodec_decode_audio4(AVCodecContext*, AVFrame*, int*, const AVPacket*)’ is deprecated [-Wdeprecated-declarations]
   int consumed = avcodec_decode_audio4(context, frame, &got_frame, &avp);
                  ^~~~~~~~~~~~~~~~~~~~~
In file included from track.cpp:40:0:
/usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:4704:5: note: declared here
 int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame,
     ^~~~~~~~~~~~~~~~~~~~~
track.cpp:213:72: warning: ‘int avcodec_decode_audio4(AVCodecContext*, AVFrame*, int*, const AVPacket*)’ is deprecated [-Wdeprecated-declarations]
   int consumed = avcodec_decode_audio4(context, frame, &got_frame, &avp);
                                                                        ^
In file included from track.cpp:40:0:
/usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:4704:5: note: declared here
 int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame,
     ^~~~~~~~~~~~~~~~~~~~~
track.cpp: In member function ‘void Track::parse(Atom*, Atom*)’:
track.cpp:391:59: warning: ‘AVCodecContext::codec_name’ is deprecated [-Wdeprecated-declarations]
   throw string("Could not open codec: ") + codec.context->codec_name;
                                                           ^~~~~~~~~~
In file included from track.cpp:40:0:
/usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:1664:35: note: declared here
     char             codec_name[32];
                                   ^
track.cpp:391:59: warning: ‘AVCodecContext::codec_name’ is deprecated [-Wdeprecated-declarations]
   throw string("Could not open codec: ") + codec.context->codec_name;
                                                           ^~~~~~~~~~
In file included from track.cpp:40:0:
/usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:1664:35: note: declared here
     char             codec_name[32];
                                   ^
track.cpp:391:59: warning: ‘AVCodecContext::codec_name’ is deprecated [-Wdeprecated-declarations]
   throw string("Could not open codec: ") + codec.context->codec_name;
                                                           ^~~~~~~~~~
In file included from track.cpp:40:0:
/usr/include/x86_64-linux-gnu/libavcodec/avcodec.h:1664:35: note: declared here
     char             codec_name[32];
                                   ^
mp4.cpp:25:0: warning: "__STDC_LIMIT_MACROS" redefined
 #define __STDC_LIMIT_MACROS 1

In file included from /usr/include/c++/6/cstdint:41:0,
                 from /usr/include/c++/6/bits/char_traits.h:420,
                 from /usr/include/c++/6/string:40,
                 from mp4.cpp:22:
/usr/lib/gcc/x86_64-linux-gnu/6/include/stdint.h:5:0: note: this is the location of the previous definition
 #  define __STDC_LIMIT_MACROS

mp4.cpp:26:0: warning: "__STDC_CONSTANT_MACROS" redefined
 #define __STDC_CONSTANT_MACROS 1

In file included from /usr/include/c++/6/cstdint:41:0,
                 from /usr/include/c++/6/bits/char_traits.h:420,
                 from /usr/include/c++/6/string:40,
                 from mp4.cpp:22:
/usr/lib/gcc/x86_64-linux-gnu/6/include/stdint.h:7:0: note: this is the location of the previous definition
 #  define __STDC_CONSTANT_MACROS

mp4.cpp: In member function ‘void Mp4::parseTracks()’:
mp4.cpp:278:46: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
   track.codec.context = context->streams[i]->codec;
                                              ^~~~~
In file included from mp4.cpp:30:0:
/usr/include/x86_64-linux-gnu/libavformat/avformat.h:880:21: note: declared here
     AVCodecContext *codec;
                     ^~~~~
mp4.cpp:278:46: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
   track.codec.context = context->streams[i]->codec;
                                              ^~~~~
In file included from mp4.cpp:30:0:
/usr/include/x86_64-linux-gnu/libavformat/avformat.h:880:21: note: declared here
     AVCodecContext *codec;
                     ^~~~~
mp4.cpp:278:46: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
   track.codec.context = context->streams[i]->codec;
                                              ^~~~~
In file included from mp4.cpp:30:0:
/usr/include/x86_64-linux-gnu/libavformat/avformat.h:880:21: note: declared here
     AVCodecContext *codec;
                     ^~~~~

[brandon-dacrib]

You should try the dockerized build which was recently merged into master.