AAC is the culmination of the current state of the art audio encoding techniques. It is designed to improve upon and replace MP3 as the defacto Audio Encoding standard. It usually offers (depending on the codec) equivalent quality to MP3 at a lower bitrate. What is the difference between *.MP4 and *.M4A? Besides the extension, absolutely nothing.

2023年6月15日 · So if you have raw ".aac" files, repackage (remux) them into ".m4a" and then you can tag them: With -c:a copy being specified, ffmpeg will use the existing audio stream as-is (i.e. it will not do a lossy AAC→AAC conversion). You can also add -metadata options to the same command if you want to attach a few standard fields.

2005年3月4日 · What tag format is that, where is it placed within the file (beginning or end), how easy is it to modify, and does iTunes display all the fields it supports, or are there others? And what other tag formats could I use? I've heard some rumblings about APEv2, but not enough to get a coherent sense of how useful they are.

AAC FAQ; Read the AAC guide to learn how to obtain AAC/MP4 files out of WAV files and CDs. Detailed AAC comparisons can be found at Roberto's listening tests page.

2024年3月12日 · 通常来说AAC的头信息在编解码过程中是可以获取到的，但今天需要根据音频参数生成相应的AAC头。项目中使用的是AAC_LC，今天先对它的结构进行分析。 项目中使用ffmpeg进行音频编码，音频编码库为FAAC，好吧，直接看代码吧。

2021年1月2日 · FAQ: How can I ensure multi disc sets and box sets are identified properly? If you’re importing a multi-disc set, the best way to ensure it’s identified properly is to make sure the track listing matches the original release. Identifying Multi-Disc Sets For best results, make sure the whole set is in its own folder, and make...

2010年3月9日 · linux下，使用TagLib，如何读取XXX.aac的tag信息。 这里需要添加什么才可以读取到吗？ 先谢过了

2025年1月16日 · Tag 数据块 由 Tag Header 数据块头、Tag Body 数据块体 组成 ; Tag Header 数据块头 由 固定 11 字节组成 ; Tag Body 需要根据 三种不同的 Tag 类型 各自有不同的结构 , 如 : 音频数据 Audio Data、 视频数据 Video Data、 元数据 Script Data ;

2025年2月4日 · Advanced Audio Coding (AAC) is the successor format to MP3, and is defined in MPEG-4 part 3 (ISO/IEC 14496-3). It is often used within an MP4 container format; for music the .m4a extension is customarily used. The second-most common use is within MKV (Matroska) files because it has better support for embedded text-based soft subtitles than MP4.

2019年2月25日 · AAC（dvancedudiooding，译为：高级音频编码），是由Fraunhofer IIS、杜比实验室、AT&T、Sony、Nokia等公司共同开发的音频编码和文件格式。 AAC 被设计为MP3格式的后继产品，通常在相同的比特率下可以获得比MP3更高的声音质量，是iPhone、iPod、iPad、iTunes的标准音频格式。