Chapters are used to store meta infromation - title of chapter and start/end time to enable easy navigation in your audiobookplayer. I'm still considering how to make transcoding/re-encoding more transparent to use.Ī: To split book file into smaller size you could use parts - this is standart way of deviding audiobook. m4a will likely be transcoded to m4b without re-encoding, however, if you select m4b wich is encoded with alac codec AudioBookConverter will re-encode it to aac even if you selected m4b as output. Q: Does AudioBookConverter always re-encode? Is it possible to transcode w/o loosing quality.Ī: AudioBookConverer tries to transcode if source codec and target default codec for selected format are same. Book will be encoding with maximum quality for the bitrate you set. Select flac file as input (.cue file should be in same folder with the same name), import chapters, select "split by chapter", press start, select ogg as output format. Q: Can I encode book from audio CD with maximum quality?Ī: Use 3rd party software to rip disk to flac. Book will be split by chapters into mp3 files. Q: Can i convert existing m4b back to mp3?Ī: Yes, select m4b file as input, import chapters, select "split by chapter", press start, select mp3 as output format. Q: Do I need to use the same bitrate as in source file to keep the quality on the same level?Ī: No, going from mp3->aac (m4a/m4b)->opus (ogg) - you could significanly reduce bitrate (and this will reduce size) and you won't notice the difference.Ī: Cutoff will remove frequencies higher then set in congiration, as most of the voice book won't use those frequences. Q: Where to create feture request or report bug?Ī: For m4b for most of the users and books 96kbps will be enough, for ogg - 64kbps could be enough. I'm lazy to create package for Lunix and MacOs, if you think it's needed, please create an issue in the tracker. Program should work on most of operating systems (32-bit Windows, Linux, Mac) if you build it for yourself and get binaries for ffmpeg and mp4v2. Q: What operating systems are supported? Why not others.Ī: Installer is only for Windows 64-bits. Program verify checksum of immages to avoid duplicate, please note similar images or same image in different formats will look like duplicates - so, you have delete them manually.Ī: Generally yes, but you still could find very old mp3 file where meta information was in local language which will not be imported correctly as program can't guess which codepage was used by the person who created those files. I may add feture of limiting load in the future, but on my PC books are typically encoded during 2-3 minutes, so I don't consider this an issue.Ī: AudioBookConverter check all incoming media files and tries to extract art work from them, then it check all dirrectories where source media files are located and load all images from them, then you could manually Add artwork file from file or Paste from the buffer (you could just do screenshot or copy image from web). Q: Why all my processors/cores are loaded to 100% while encoding.Ī: I did specific focus on reducing encoding time by using all available cores and planning encoding tasks to minimize total time of encoding. Q: What is the best format(codec) for audibooks?Ī: Comparing quality to size: ogg (opus) will show the better quality then other codecs? Q: Can i create audiobook for ipod/iphone and how to upload it?Ī: Yes, select m4b as output format create book, import to iTunes and sync iTunes with you device automatically or manually. Q: What output format and codec are supported? Q: What input formats and codec are supported as input?Ī: mp3, m4a, m4b (aac/alac, with chapters information), flac (with track information from. Primary goal was to support m4b format, but currently AudioBookConverter supports other formats and could be used as Audio Converter tool. A: AudioBookConverter is Open Source software to convert different audio formats to AudioBooks.
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