The VideoLAN Forums

Posted: **13 Sep 2013 12:24**

Does anyone know why this speex file recorded at 32kHz will not play through the VLC Player? I compared its header in hex to others and it looks ok although I am no expert on what its header should contain, it loads into the VLC player but just stops when play is pressed however if I place on my web server then the vlc plugin on my web browser plays it fine. I've tried the latest VLC player and gone right back to a year ago in release and all show the same problem with this file. I've placed the file in a dropbox link which is below, the file contains a recording of radio so there is no sensitive information in it, if anyone has a clue to whats going on here could they let me know? Thanks :-

Link
https://www.dropbox.com/s/kkwbnelzl0j5u ... _32kHz.spx

Posted: **15 Sep 2013 09:33**

Strange file, many players and MediaInfo can't detect its bitrate and/or its duration:

Code: Select all

Overall bit rate                         : 0 bps
...
Duration: 953142778wk 1d 21:54:25.728 (9223372036854775808 samples)

VLC (also VLC 2.1.0-rc2) does not like it, indeed:

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main warning: clock gap, unexpected stream discontinuity
main warning: feeding synchro with a new reference point trying to recover from clock gap
...
main debug: using decoder module "speex"
speex debug: Speex 32000 Hz audio using ultra-wideband (sub-band CELP) mode (stereo)
main debug: Buffering 0%
main debug: Buffering 0%
main debug: Buffering 0%
main debug: Buffering 0%
main debug: Buffering 0%
main debug: Buffering 0%
...
main debug: Buffering 0%
main debug: Buffering 0%
main debug: Buffering 0%
main debug: EOF reached
main debug: Stream buffering done (0 ms in 306 ms)
main debug: Decoder buffering done in 0 ms
main debug: finished input
main debug: removing module "speex"

It sounds really bad with a lot of crackles.
However many players (including foobar, AIMP, MPlayer) can play it.

And also FFplay:

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Input #0, ogg, from 'audio_32kHz.spx': vq=    0KB sq=    0B f=0/0
  Duration: 00:21:43.58, start: -5061.294906, bitrate: 31 kb/s
    Stream #0:0: Audio: speex, 32000 Hz, stereo, s16
-5037.74 A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0

You should create a new ticket on the VLC Trac with your messages log and the links to your file and to this thread.

Posted: **16 Sep 2013 15:13**

The vlc log messages sound like this could be down to an unstable clock perhaps? I'll create a new ticket and place a reference to it on this thread. Thank you Lotesdelere for the testing and capturing that you've done, greatly appreciated, I shall create a ticket now and place reference to it here.

Posted: **16 Sep 2013 16:24**

Ticket 9398 has been created to track this issue :-
https://trac.videolan.org/vlc/ticket/9398

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Speex file playable via vlc plugin but cant play directly

Speex file playable via vlc plugin but cant play directly

Re: Speex file playable via vlc plugin but cant play directl

Re: Speex file playable via vlc plugin but cant play directl

Re: Speex file playable via vlc plugin but cant play directl