Summary: ffmpeg -i mono.wav -acodec alac alac_mono.m4a # output is alac_mono.m4a totem alac_mono.m4a # plays double speed
alac-decoder -f decoded.wav alac_mono.m4a # output is decoded.wav, which is STEREO (a bug) totem decoded.wav # plays normally (in stereo). (The attachment to comment#2 contains sample files and a demo script with these commands.) Note: "mono.wav" is a 1-track (monophonic) WAV file, e.g., from a field recording. Another way to create a mono .wav file is to rip a commercial CD, and convert one of the tracks to mono using Audacity's "Tracks->Stereo Track to Mono" feature. -- ffmpeg generates mono ALAC .m4a sound files which play double speed https://bugs.launchpad.net/bugs/661922 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
