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Lavf VS LibFLAC
fehers
post Nov 15 2012, 20:50
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Okay i converted .m4a file to .flac using FFMPEG like...

ffmpeg -i filename.m4a filename.flac

Using spectro analizer to see the file I noticed the one converted with ffmpeg has compression type of "Lavf54.36.100" while all the others on my computer downloaded from different sources have "LibFLAC 1.2.1". I checked this with at least 20 different flac files from different albums and sources. So my question is what is this "Lavf54.36.100" when all other I checked have "LibFLAC 1.2.1"?

Screenshots here!
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Kohlrabi
post Nov 15 2012, 22:43
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QUOTE (fehers @ Nov 15 2012, 21:50) *
Okay i converted .m4a file to .flac using FFMPEG like...

ffmpeg -i filename.m4a filename.flac

Using spectro analizer to see the file
I hope the .m4a files in question were ALAC and not AAC, since a conversion from lossy to lossless would be insanely wasteful and pointless. Also, A better way than spectrograms to ensure that your encoder was lossless is to bit-compare the decoded PCM data stream. For example, foo_bitcompare for foobar2000 allows to compare two decoded streams with each other.

This post has been edited by Kohlrabi: Nov 15 2012, 22:44


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