mencoder-1.0-alt35.26470.1 APT installed the new version of mencoder, but now /usr/bin/mencoderhas undefined symbols, because APT didn't know that the new version of a library (libdvdnav?) is required. A solution could be to add version to the symbols in libdvdnav's ABI and rebuild mencoder. $ rpm -q mencoder -l | fgrep bin/ | xargs ldd -r linux-gate.so.1 => (0xb7fbc000) libXvMCW.so.1 => /usr/lib/libXvMCW.so.1 (0xb7f8a000) libfaac.so.0 => /usr/lib/libfaac.so.0 (0xb7f79000) libdirac_encoder.so.0 => /usr/lib/libdirac_encoder.so.0 (0xb7ef6000) libdirac_decoder.so.0 => /usr/lib/libdirac_decoder.so.0 (0xb7e8d000) libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb7da6000) libx264.so.0 => /usr/lib/libx264.so.0 (0xb7cf9000) libmp3lame.so.0 => /usr/lib/libmp3lame.so.0 (0xb7c8a000) libtinfo.so.5 => /lib/libtinfo.so.5 (0xb7c73000) libsmbclient.so.0 => /usr/lib/libsmbclient.so.0 (0xb7a53000) libpng12.so.0 => /usr/lib/libpng12.so.0 (0xb7a30000) libz.so.1 => /lib/libz.so.1 (0xb7a1b000) libjpeg.so.62 => /usr/lib/libjpeg.so.62 (0xb79fc000) libungif.so.4 => /usr/lib/libungif.so.4 (0xb79f4000) libasound.so.2 => /usr/lib/libasound.so.2 (0xb7932000) libdl.so.2 => /lib/libdl.so.2 (0xb792e000) libdvdread.so.3 => /usr/lib/libdvdread.so.3 (0xb7911000) libcdda_interface.so.0 => /usr/lib/libcdda_interface.so.0 (0xb7902000) libcdda_paranoia.so.0 => /usr/lib/libcdda_paranoia.so.0 (0xb78fa000) libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0xb787f000) libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0xb7855000) libfribidi.so.0 => /usr/lib/libfribidi.so.0 (0xb7848000) libenca.so.0 => /usr/lib/libenca.so.0 (0xb7821000) liblzo2.so.2 => /usr/lib/liblzo2.so.2 (0xb7804000) libmad.so.0 => /usr/lib/libmad.so.0 (0xb77ed000) libvorbis.so.0 => /usr/lib/libvorbis.so.0 (0xb77c5000) libogg.so.0 => /usr/lib/libogg.so.0 (0xb77c0000) libspeex.so.1 => /usr/lib/libspeex.so.1 (0xb779f000) libtheora.so.0 => /usr/lib/libtheora.so.0 (0xb7758000) libdts.so.0 => /usr/lib/libdts.so.0 (0xb7733000) libmpcdec.so.5 => /usr/lib/libmpcdec.so.5 (0xb772a000) libdv.so.4 => /usr/lib/libdv.so.4 (0xb7701000) libxvidcore.so.4 => /usr/lib/libxvidcore.so.4 (0xb75e3000) libm.so.6 => /lib/libm.so.6 (0xb75bd000) libnut.so.0 => /usr/lib/libnut.so.0 (0xb75b0000) libdvdnav.so.4 => /usr/lib/libdvdnav.so.4 (0xb7585000) libpthread.so.0 => /lib/libpthread.so.0 (0xb756e000) libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb7563000) libc.so.6 => /lib/libc.so.6 (0xb743b000) libX11.so.6 => /usr/lib/libX11.so.6 (0xb7352000) /lib/ld-linux.so.2 (0x80000000) libresolv.so.2 => /lib/libresolv.so.2 (0xb733f000) libnsl.so.1 => /lib/libnsl.so.1 (0xb7329000) librt.so.1 => /lib/librt.so.1 (0xb7320000) libgssapi_krb5.so.2 => /lib/libgssapi_krb5.so.2 (0xb72f8000) libkrb5.so.3 => /lib/libkrb5.so.3 (0xb7268000) libk5crypto.so.3 => /lib/libk5crypto.so.3 (0xb7243000) libcom_err.so.2 => /lib/libcom_err.so.2 (0xb723f000) libldap-2.3.so.0 => /lib/libldap-2.3.so.0 (0xb720a000) liblber-2.3.so.0 => /lib/liblber-2.3.so.0 (0xb71fe000) libSM.so.6 => /usr/lib/libSM.so.6 (0xb71f6000) libICE.so.6 => /usr/lib/libICE.so.6 (0xb71df000) libexpat.so.1 => /usr/lib/libexpat.so.1 (0xb71be000) libdvdcss.so.2 => /usr/lib/libdvdcss.so.2 (0xb71b6000) libxcb-xlib.so.0 => /usr/lib/libxcb-xlib.so.0 (0xb71b4000) libxcb.so.1 => /usr/lib/libxcb.so.1 (0xb719c000) libkrb5support.so.0 => /lib/libkrb5support.so.0 (0xb7194000) libkeyutils.so.1 => /lib/libkeyutils.so.1 (0xb7191000) libsasl2.so.2 => /lib/libsasl2.so.2 (0xb717b000) libssl.so.6 => /lib/libssl.so.6 (0xb713c000) libcrypto.so.6 => /lib/libcrypto.so.6 (0xb7006000) libXau.so.6 => /usr/lib/libXau.so.6 (0xb7003000) libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0xb6ffd000) libcrypt.so.1 => /lib/libcrypt.so.1 (0xb6fca000) undefined symbol: dvdnav_audio_stream_channels (/usr/bin/mencoder) undefined symbol: dvdnav_describe_title_chapters (/usr/bin/mencoder) undefined symbol: dvdnav_get_current_time (/usr/bin/mencoder) undefined symbol: dvdnav_audio_stream_format (/usr/bin/mencoder) $ apt> showpkg libdvdnav Package: libdvdnav Versions: 0.1.10-alt6(/var/lib/apt/lists/ftp.altlinux.org_pub_distributions_ALTLinux_Sisyphus_i586_base_pkglist.classic)(/var/lib/apt/lists/ftp.linux.kiev.ua_pub_Linux_ALT_Sisyphus_i586_base_pkglist.classic) 0.1.10-alt3(/var/lib/rpm/Packages)
Sorry for duplicate report, I didn't notice mencoder is also compiled from the mplayer src.rpm. *** This bug has been marked as a duplicate of bug 16008 ***