The M4A file format forms part of the MP4 specification, specifically the audio stream of the Mp4 format. .m4a files are essentially audio only bit streams encoded using the audio codecs from the MPEG-4 Part 14 specification. Audio encoding can be accomplished using algorithms from the lossy family or lossless family of codecs. One of the design goals of the M4A audio format was to achieve a high level compression ratio without sacrificing audio quality. In this regard, it was intended that the format would succeed the MP3 file format. Although it has done this from a technical standpoint, the MP3 format continues to be widely used.
The OGG file format and .ogg file extension refer to the open source container format developed and maintained by the Xiph.Org Foundation. The format has been in development since the early 90's and initially was designed as an open format for audio compression. Later iterations has seen the format revised into a full audio and video container format with compression codec support of different standards. OGG can be used both in compressed or uncompressed ways and is compatible with different lossy and lossless codecs both for audio and for video. Text can also be added into OGG files as an overlay, all packaged within a single file.
FreeFileConvert uses tuned encoding for M4A to OGG conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload M4A files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized OGG results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent OGG audio with dependable progress tracking.
Typically an m4a audio stream is encoded using the lossy Advanced Audio Coding format or AAC compression format which has a minimal tradeoff of audio quality in favor for storage size. In situations where maximum quality is required, the Apple Lossless Audio Codec or ALAC can be used.
Though OGG is versatile in the number of codecs it supports, typically only free codecs developed by the Xiph.org organization are used for encoding and decoding. From the lossy family of codecs, audio can be encoded using Speex, Vorbis, or Opus. Whereas Lossless or uncompressed encoding can be done using FLAC and OggPCM respectively. To be competitive against its closest rivals such as Windows Media Video, Real Video and MPEG-4, lossy video compression codec Theora is often used but a lossless format, DIRAC, can also be used to encode video streams.
Upload your audio file in the M4A format from your device, Dropbox, or Google Drive.
Select OGG as the output format and click Convert. Adjust optional settings if needed.
Download the converted audio file. Each file stays available for up to 5 downloads.