Playing BBC R3 FLAC files recorded by nightly VLC

George Eycott george at eycott.co.uk
Tue Aug 8 03:20:26 PDT 2017


Hmm, so it reported exactly half the number of buffers played relative to
blocks downloaded and 32 bits per sample rather than the 16 in the blocks.
Seems too much of a co-incidence to me. Could it be that the blocks each
contain 16 bits of data and two blocks are joined to make a 32 bit "buffer"?

> -----Original Message-----
> From: get_iplayer [mailto:get_iplayer-bounces at lists.infradead.org] On
> Behalf Of RS
> Sent: 08 August 2017 10:42
> To: get_iplayer at lists.infradead.org
> Subject: Re: Playing BBC R3 FLAC files recorded by nightly VLC
> 
> >From: Jim web
> >Sent: Monday, August 7, 2017 09:29
> 
> >The first half dozen or so Proms I've recorded work fine. Occasional
'TLS'
> >errors about packets of unexpected length which seem to have no effect
> on
> >the recorded audio.
> 
> >Some later recordings (but not the 'Ella and Dizzy' Prom) have begun
giving
> >me 'HTTPS' errors which represent a missed chunk of audio data. I suspect
> >this *is* an 'overloading' issue but can't tell. In general these ruin
the
> >recording for me in terms of listening, but are useful for analysis
> >purposes. [1]
> 
> For Prom 30 yesterday evening the 64 bit 31 July nightly build of VLC
> reported under its Statistics tab
> Lost 0 buffers
> Discarded (corrupted) 0
> Dropped (discontinued) 0
> There was something not quite right because it reported 180094 blocks
> Decoded and 90047 buffers Played when they should be the same after
> subtracting Lost.  It also reported 32 bits per sample when Mediainfo
> correctly reported 16.  Even so the figures are encouraging.
> 
> Since the FLAC stream includes all the R3 output during the trial you can
> test whether a recent nightly build of VLC gives you better results than
> ffmpeg without risking loss of a Prom.  Of course it will not simulate the
> extra load during the Prom.
> 
> Delay was 2min51s behind FM.
> 
> 
> 
> _______________________________________________
> get_iplayer mailing list
> get_iplayer at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/get_iplayer




More information about the get_iplayer mailing list