So I decided that FFmpeg should explicitly ignore and remove meta data, including chapters, and my tool would create new and customized tags afterwards. Manipulating the meta data with Mp3Tag had become an essential element of my workflow and my own tool would have to offer similar features, but much more automated. While defaults are a very good idea for the audio stream - where Open Audible intervenes, hence the different bit rate -, I don't think they are suitable for meta data.īefore I created AAX Audio Converter, I still used the official workflow with iTunes, burning to (virtual) CD, transcoding to MP3, and post-processing with mp3DirectCut and Mp3Tag. Open Audible does not touch meta data, it just leaves this to FFmpeg. Now, with meta data, there is a fundamental difference between AAX Audio Converter and Open Audible. Windows Explorer may me similar, but that's still unconfirmed. There is some evidence that VLC and MediaInfo ignore this and look at embedded chapter info instead. If you look into it with FFmpeg, the duration will be reported correctly. After some comparison of meta data with FFmpeg and MediaInfo I now believe, with some additional testing yesterday, that these two - and Windows Explorer - take the duration from meta data, not from the stream itself. This VLC phenomenon is on my todo list for a long time, but your observation gave it the necessary kick for proper investigation. I think we look at two different effects here. Whereas the one made with OA is perfect, nothing is cut and the length is precisely 11:05:27. Maybe this can give you some clue.ģ) Out of curiosity, I tried AAC without chapter splitting, and both issues above still exist (length 11:09:33). You're right about VLC quickly adjusting you'll see the first few seconds in the timer rushing very fast, though I don't think VLC is what's causing the problem, because the length of the file is already part of the meta info shown in Windows Explorer or the Details tab.Ģ) I also noticed the Opening Credits for this book should be 00:27, the part extracted by AAC is only 00:25 and the "This is Audible" is completely absent and the music at the very start is distorted. I can confirm the chapter lengths below aax chapters: are exactly what OpenAudible uses, which is actually not very good because it causes the Opening Credits to be lumped with Chapter 1, and also the End Credits Preview Copyright to be lumped with Chapter 18 (the last chapter).ĪAC the on other hand obviously uses the chapter lengths below content meta chapters: which is much superior. The additional info you've requested are now in the same link above.ġ) I had a look in the log. The log file should should provide more details. I haven't found out the reason for that yet but I have seen the phenomenon before. It also can be something with the mp3 meta data. However, it appears that VLC may do its own timing estimate, independent of the entry in the playlist, but often quickly adjusts. Or even better: Can you activate logging (run AAX Audio Converter with command line argument "-Log=3" and send me the log file as well (see manual for details).įor books downloaded with the Audible App, the program will look for the associated context_metatada.json file and retrieve chapter timings and chapter names from there (AAX files themselves do no not normally have chapter names.) So timings should match. mp3 files.Ĭan you send me the content metadada.json as well? (Default path: C:\Users\AppData\Local\Packages\AudibleInc.AudibleforWindowsPhone_xns73kv1ymhp2\LocalState\filescache). TL DR- Just use OpenAudible 1.6.7 offline, as a converter for. Second, it's stated on the website The older versions will cease working in the near future, which suggests in the future, connecting to the internet may compromise our current version by forcing an upgrade. First, to prevent that annoying pop-up asking you to purchase the new version. I also went into Windows Firewall and created inbound/outbound rules to block OpenAudible from accessing the internet.You'll still see all the information on your audiobooks, sans "Rating" and "Genre".Now you can convert them into mp3 files as usual, and split them into chapters etc.No need to be connected to the internet at all. axx files (or you can simply drag them into OpenAudible). aax files (if you want, copy them somewhere, so you don't accidentally mess with the original files).
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