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Editorial Team
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Asked: 2026-05-23T06:11:15+00:00

The problem is this: I wrote a simple program that uses FFMPEG. compile as

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The problem is this: I wrote a simple program that uses FFMPEG. compile as follows:


gcc -lavcodec -lavformat -lavutil -c test.c

gcc -lavcodec -lavformat -Lavut -o test test.o

Compiled without problems, test file appears, but when you start:
. / test
An error occurs:

. / test: error while loading shared libraries: libavcodec.so.53: cannot open shared object file: No such file or directory

At what ffmpeg was originally built and installed and the file libavcodec.so.53 there. In what may be the problem?

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1 Answer

  1. Editorial Team

    You appear to be linking against libraries in a custom library directory, -Lavut.

    Check where your loader looks for the executable’s libraries:

    ldd ./test

    If any of them are in non-standard directories (and ldd indicates that a particular library couldn’t be found), append those to the LD_LIBRARY_PATH:

    LD_LIBRARY_PATH=/tmp/work/avut ./test

    If you like, you can hardcode the library path into the executable with the -rpath linker option, e.g. gcc ... -Wl,-rpath -Wl,/tmp/work/avut.

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