|[CRTech] Christian Radio Tech
CRTech <firstname.lastname@example.org>, Joel Force <email@example.com>|
Re: Re: Groundwork Issue
dave allen <firstname.lastname@example.org>
Thu, 7 Jun 2018 09:06:48 -0600
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0
by the size difference, i'd say they've added a large (3k) ID3v2 tag
at the beginning of the file, and your Groundwork system doesn't
know how to handle it. an ID3v2 'tag' has a size that is stated in a
non-syncing format so software that knows about it can skip it (or
use it) and get to the mp3 data. thing is, although the ID3v2 header
(ie size) is in non-syncing format, the data in the tag can be a
mp3 (and mp2) frames begin with 0xff (a byte with all bits set). if
software encounters 'junk' in the file, it looks for 0xff to 'sync'
to the frames. the ID3v2 header has no bytes with bit7 set so as to
not cause false sync's.
but i suspect that the data in the ID3 tag does contain 0xff bytes.
i would see if Groundwork has an update. ID3v2 has been around for a
LONG time and they really should just skip it. if they process mp3
files (and they DO) then they REALLY need to process and/or skip the
alternatively the ministry could leave out the ID3v2 tag and maybe
just use the v1 tag at the end of the mp3 file. but that's a huge
barring both of those, you're stuck with re-encoding the mp3 files
since your encoder appears to leave off the tag. alternatively find
a generous software designer who would write you an ID3v2 stripper,
which would be quicker than re-encoding and not suffer the quality
loss of the re-encoding. if you happen to download these files with
the ambos UI, that generous software designer might be the same guy
who could add that 'stripper' to the UI.... someday.
if you want to upload those two files, i can confirm all this. if
you want to open each with wordpad (yes the normal windows wordpad)
they will take a while to load, but it will show you the bytes at
the beginning of the file and you should see "ID3" in one and not
the other - right at the beginning.
On 6/7/2018 8:23 AM, Joel Force wrote:
Under the Details tab all the properties are identical.
The bit rate is the same for each audio file, but the size
is slightly different. Only 3 KB different.