On 13/11/2012 23:27, Alastair wrote:
I am advised that a file containing audio data only in AAC format can be named
either .mp4
or .m4a because it fits correctly into both the .mp4 and .m4a categories. Most
servers,
control points and music players understand this, but there are a few that
insist on one of
other of these filetype suffixes. In such cases it should be fine to simply
rename the file
from .m4a to .mp4 or vice versa.
For a while now music and radio downloads have been put into M4a files and I
think this
may be upsetting some of my renderers. I say think because I am still trying
to sort out the
tagging but meanwhile why M4a which I understand to be an apple format rather
than mp4
which is the ISO standard? Is this an artifact from the BBC end or from
get_iplayer.
Google would be your friend here. M4A and MP4 have the same container
format. The M4A extension is just a naming convention for audio-only
files, a convention to which get_iplayer adheres. For whatever reasons,
some players won't recognise the M4A extension, so rename.
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