Convert YouTube DASH Audio (youtube-dl) To M4a (AAC DL)
Answer : No, you need a second conversion step. The problem is that for YouTube DASH, the MP4 container's ftyp has the "major brand" set to dash instead of m4a . This is the correct approach for DASH streaming, but Winamp is too old to recognize it (and many other programs are). Now, what would be a reasonable suggestion is to create a feature request for youtube-dl to add post-processing support for ffmpeg to convert the major brand of the MP4 container to something more compatible. But at the moment, such a thing does not exist. Or, file a bug report for Winamp to include decoding support for dash brands. Since it's likely to rely on a third-party decoder plugin, this probably means raising a bug report somewhere else, too. youtube-dl 2015.01.23.4 and newer will automatically correct the header of the m4a file if ffmpeg is present on the system. Source: youtube-dl : Youtube m4a files downloaded with --extract-audio can't play in some players All you ha...