![freac redditaudio freac redditaudio](https://www.freac.org/images/stories/freac-io-mp3.png)
I'm planning to either use ffmpeg to convert them or mkvtoolnix I want to embed opus files if I can get a couple of app devs to support it in the iOS audiobook players and if that fails then resort to using HE-AAC 32kbps which I'm currently doing with m4b files. So now have to play around with this mka audiobooks more. So I still need to play around with this mka as I've been using mkvtoolnix to batch remux tons of m4v to mkv which worked great. In the case of MP3, MP2 AC3 and even some AAC, using "compressed headers" the MKA file may even be smaller than the original "raw" file, without losing any bit of information.Īlso chapter support is fairly straightforward evidently If you intend to combine the audio with video, then having is in MKA means you can merge it with an MKV, even if the application doesn't support the audio type.ħ. Detecting differences between two audio streams would be easy because you could store both in a single file, start playback, and then just switch between tracks.Ħ. You don't even have to be able to play that format back, you could edit by just knowing timecodes.ĥ. It is easy to delete portions of the audio without reencoding because you just throw away those blocks. If you write a program to read audio of of MKA, then you don't need to understand how the framing works in the different formats because it is already done for you in Matroska.Ĥ. You could make your own compilation in a single file, even using different audio formats, such as MP3 and Vorbis.ģ. You have the option of dividing the tracks into seperate Tracks, or seperate Chapters. All tracks to a CD can be in a single file. That means that if you write a program to read back tags, it only has to read them from one type of tagging system, no matter what type of audio is being used.Ģ. The tags will be the same no matter what audio format you use. Here are some reasons that placing audio in MKA is useful:ġ. This metadata-file was implemented 2 years ago into opus-toolsĮdit: forgot to add the link for opus and ogm (ogg) chapter supportĪnother is mka which is matroska mkv but audio. You can view the opus metadata with -comment tagging using opus-tools (opusenc) starting at line #173 Sidenote: I should mention also fre:ac also lets you convert to m4b files just doesn't have cover (image) nor title and author support but still works well as it does embed the chapters. Evidently they even support images now too but for me it's not that important at all. Just choose a folder of mp3 files then convert them to opus 32kbps and VLC plays it back with chapter support with the name of chapters showing based on the filenames of the mp3s.
![freac redditaudio freac redditaudio](https://media-cldnry.s-nbcnews.com/image/upload/t_nbcnews-fp-1200-630,f_auto,q_auto:best/newscms/2014_33/614366/orb.png)
#Freac redditaudio free
I've done it with the free program fre:ac (free audio converter) 1.1 Opus one file with chapters (just like an m4b). Just as there are hi-res 24/192 tracks one can buy that are simply upconverted CD quality files (16/44.1), so this is a "fraud" as well.I have most of my audiobooks in m4b but after doing extensive research I'm considering also doing some audiobooks into: There are certainly CDs out there that are created from mp3 files. It is all up to the honesty and reputation of the maker of the CDs. See:Īs mville points out, one can never be sure what a producer of a CD actually used. and audio CDs are not in wav format, just something very similar (equivalent) to wav.Yes, wav is a "container" that is a holds a lossless version of the track that can be converted back losslessly to LPCM, which is what is on the CD. It does not matter how the music is recorded/mixed/mastered, what matters is, does it sound any good. Often, the recording process is printed on the artwork, but that does not mean it is true. Maybe, Pink Floyd - Dark Side Of The Moon was mastered on cassette. I think what you are asking is how can we be sure that the source material for an audio CD is not mp3 or similar.