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[118.208.180.40]) by smtp.gmail.com with ESMTPSA id q13sm5697817pff.13.2021.06.17.10.00.09 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 17 Jun 2021 10:00:10 -0700 (PDT) In-Reply-To: <20210617154633.tbqvi26ogztfdt7d@fastmail.com> References: <20210617154633.tbqvi26ogztfdt7d@fastmail.com> X-Referenced-Uid: 6349 Thread-Topic: [EXTERNAL] Re: [SoX-users] "norm" effect causes intermittent truncation of MP3 output. User-Agent: Android X-Is-Generated-Message-Id: true MIME-Version: 1.0 X-Local-Message-Id: <4820dfc0-8d9f-43fb-81eb-d0ee81c651da@damsmart.com.au> From: Scott Temby Date: Fri, 18 Jun 2021 03:00:06 +1000 To: sox-users@lists.sourceforge.net Message-ID: <4820dfc0-8d9f-43fb-81eb-d0ee81c651da@damsmart.com.au> X-Headers-End: 1ltvNI-00E0Dy-Jt Subject: Re: [EXTERNAL] Re: "norm" effect causes intermittent truncation of MP3 output. X-BeenThere: sox-users@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: sox-users@lists.sourceforge.net Content-Type: multipart/mixed; boundary="===============3537849830876800319==" Errors-To: sox-users-bounces@lists.sourceforge.net --===============3537849830876800319== Content-Type: multipart/alternative; boundary="----AI8TY3OMZ8X0Z3U1PNW4TESKJZJUU6" Content-Transfer-Encoding: 7bit ------AI8TY3OMZ8X0Z3U1PNW4TESKJZJUU6 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Thanks Peter, I'm aware of the frame/chunk granularity at the end, I'm tal= king about serious truncation, e=2Eg=2E 30min input wav, with a 4 minute MP= 3=2E Without the "norm" argument, everything reliably processes as expected= =2E Cheers, Scott On 18 Jun=2E 2021, 1:54 am, at 1:54 am, "Peter P=2E" <= peterparker@fastmail=2Ecom> wrote: >Hi Scott, > >encountered a similar thin= g and was told that the file length of mp3 >files has a lower resolution as= it stores data in chunks=2E If your =2Ewav >is a bit longer than the mp3 b= ut not long enough to fill up another >chunk at the end this might get disc= arded=2E Don't quote me on this, just >remembering something I asked here y= ears ago=2E=2E=2E > >* Scott Temby [2021-06-17= 16:03]: >> Hi, >> >> When using "sox=2Eexe *=2Ewav* -C 192= =2E01 >> *=2Emp3* norm" >> I've found the output is occas= ionally truncated (shorter duration >than the >> input, but matches up to t= hat point)=2E >> >> I've tried this on a few systems, and while the fault = is intermittent >(not >> linked to any particular input file or condition),= it does repeatedly >occur >> (a few times in a "batch")=2E Immediately re-= processing the same input >files >> often yields success, or at least, fail= ures on different files=2E I've >also >> tried -C 192=2E2 to see if that wa= s the issue, and it is not=2E removing >"norm" >> solves the problem, and I= can reliably encode thousands of files >without >> truncation=2E >> >> Ho= pefully there's an easy fix, if not, at least you are now aware of >the >> = issue=2E >> >> Regards, >> Scott > > >> __________________________________= _____________ >> Sox-users mailing list >> Sox-users@lists=2Esourceforge=2E= net >> https://lists=2Esourceforge=2Enet/lists/listinfo/sox-users > > > >__= _____________________________________________ >Sox-users mailing list >Sox-= users@lists=2Esourceforge=2Enet >https://lists=2Esourceforge=2Enet/lists/li= stinfo/sox-users ------AI8TY3OMZ8X0Z3U1PNW4TESKJZJUU6 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Thanks Peter= ,

I'm aware of the frame/chunk granularity = at the end, I'm talking about serious truncation, e=2Eg=2E 30min input wav,= with a 4 minute MP3=2E Without the "norm" argument, everything reliably pr= ocesses as expected=2E

Cheers,
Scott
On 18 Jun=2E 20= 21, at 1:54 am, "Peter P=2E" <peterparker@fastmail=2Ecom> wrote:
Hi Sco=
tt,

encountered a similar thing and was told that the file length of=
 mp3
files has a lower resolution as it stores data in chunks=2E If your=
 =2Ewav
is a bit longer than the mp3 but not long enough to fill up anot=
her
chunk at the end this might get discarded=2E Don't quote me on this,=
 just
remembering something I asked here years ago=2E=2E=2E

* Sco=
tt Temby <scottt@damsmart=2Ecom=2Eau> [2021-06-17 16:03]:
 Hi,
 
 When using "sox=2Eex=
e *<source_file>=2Ewav* -C 192=2E01
 *<destination_file>=2Em=
p3* norm"
 I've found the output is occasionally truncated (shorter dura=
tion than the
 input, but matches up to that point)=2E
 
 I've tri=
ed this on a few systems, and while the fault is intermittent (not
 link=
ed to any particular input file or condition), it does repeatedly occur
=
 (a few times in a "batch")=2E Immediately re-processing the same input fil=
es
 often yields success, or at least, failures on different files=2E I'=
ve also
 tried -C 192=2E2 to see if that was the issue, and it is not=2E=
 removing "norm"
 solves the problem, and I can reliably encode thousand=
s of files without
 truncation=2E
 
 Hopefully there's an easy fix=
, if not, at least you are now aware of the
 issue=2E
 
 Regards,<=
br> Scott



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