<html><body><div style="color:#000; background-color:#fff; font-family:lucida console, sans-serif;font-size:12pt"><div>Hi, </div><div><br>As flac is lossless the number of frame and md5 code of the track
should be the same. <br></div><div><br></div><div>But I did the test you propose, I extract from the
flac the wav and I launch:
<br><br>avconv -i file.wav -acodec alac file.m4a
<br><br>and surprise ! I got an Apple lossless audio
<br></div><div><br></div><div><br></div><div>What I was suspecting is true the conversion from flac to m4a using alac codec create an acc 128 !!!<br></div><div><br></div><div>Conclusion the command below create an acc even using codec alac I think this a bug.
<br><br>avconv -i file.flac -acodec alac file.m4a <br><br>Many people using avconv or ffmpeg to create Apple lossless from flac got acc 128 <img src="http://mail.yimg.com/ok/u/assets/img/emoticons/emo30.gif" alt="=)) Mort de rire"></div><div><br></div><div>My version is avconv <br></div><div><br></div><div>version 0.8.1-4:0.8.1-0ubuntu1, Copyright (c) 2000-2011 the Libav developers<br>
</div><div> <span style="background-color:rgb(255, 255, 255);"></span><br></div><div><br></div> <div style="font-family: lucida console, sans-serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">De :</span></b> Claudio Freire <klaussfreire@gmail.com><br> <b><span style="font-weight: bold;">À :</span></b> "This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter." <libav-user@ffmpeg.org> <br> <b><span style="font-weight: bold;">Envoyé le :</span></b> Samedi 2 juin 2012 6h05<br> <b><span style="font-weight: bold;">Objet :</span></b> Re: [Libav-user] ALAC codec I am not sure it's really lossless<br> </font> </div> <br>On Fri, Jun 1, 2012 at 3:58 PM, kurdy <<a ymailto="mailto:kurdy_ch-forum@yahoo.fr"
href="mailto:kurdy_ch-forum@yahoo.fr">kurdy_ch-forum@yahoo.fr</a>> wrote:<br>> From a flac file I did avconv -i f.flac -acodec alac f.m4a<br>> then back to flac avconv -i f.m4a -acodec flac f.flac<br><br>Better try some other reference format (pcm ideally), as flac may have<br>multiple representations of the same waveforms.<br>_______________________________________________<br>Libav-user mailing list<br><a ymailto="mailto:Libav-user@ffmpeg.org" href="mailto:Libav-user@ffmpeg.org">Libav-user@ffmpeg.org</a><br><a href="http://ffmpeg.org/mailman/listinfo/libav-user" target="_blank">http://ffmpeg.org/mailman/listinfo/libav-user</a><br><br><br> </div> </div> </div></body></html>