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Formats/Audio

M4B Audiobook. AAC audiobooks in an MP4 container with chapters. What Apple Books and most audiobook apps play. 124 formats it can become, 175 that become it.

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M4B becomes.

Every path the planner knows from a M4B, the common ones first. One hop is a single engine. More hops go through another format on the way.

124 targets

FLAConefidelity 1.001 hop~800 msWAVonefidelity 1.001 hop~800 msM4Aonefidelity 0.901 hop~1.0 sMP3onefidelity 0.901 hop~1.0 sOGGonefidelity 0.901 hop~1.0 sAIFFonefidelity 1.001 hop~800 msAAConefidelity 0.901 hop~1.0 sOPUSonefidelity 0.901 hop~1.0 sWMAonefidelity 0.901 hop~1.0 sAUonefidelity 1.001 hop~800 msCAFonefidelity 1.001 hop~800 msM4Ronefidelity 0.901 hop~1.0 sAC3onefidelity 0.851 hop~1.0 sGSMonefidelity 0.501 hop~1.0 sPNGonefidelity 0.812 hops~6.0 sMP4onefidelity 0.901 hop~3.0 s

Becomes M4B.

Every format that can be turned into a M4B.

175 sources

FLAConefidelity 0.951 hop~1.0 sWAVonefidelity 0.951 hop~1.0 sM4Aonefidelity 0.901 hop~1.0 sMP3onefidelity 0.901 hop~1.0 sOGGonefidelity 0.901 hop~1.0 sAIFFonefidelity 0.951 hop~1.0 sAAConefidelity 0.901 hop~1.0 sOPUSonefidelity 0.901 hop~1.0 sWMAonefidelity 0.901 hop~1.0 sAUonefidelity 0.951 hop~1.0 sCAFonefidelity 0.951 hop~1.0 sAC3onefidelity 0.901 hop~1.0 sGSMonefidelity 0.901 hop~1.0 sM4Ronefidelity 0.901 hop~1.0 sAPEonefidelity 0.951 hop~1.0 sWVonefidelity 0.951 hop~1.0 s

Two commands.

cv targets answers this page for any file. cv convert runs any row above.

~/filescv 0.1
$ cv targets --from m4b
m4b ->
  flac     one   fidelity 1.00  hops 1  ~800 ms
  wav      one   fidelity 1.00  hops 1  ~800 ms
  m4a      one   fidelity 0.90  hops 1  ~1.0 s
  mp3      one   fidelity 0.90  hops 1  ~1.0 s
$ cv convert file.m4b file.flac
file.flac -> file.flac