[DVDnav-discuss] Strange DVD playback skip/freeze

[Roger Pack]

On 4/26/14, Tuomo Sipola <tuomo.sipola at iki.fi> wrote:
> 26.04.2014 00:37, Roger Pack wrote:
>>
>> What is the console output of mplayer when it passes over the pause?
>> What about VLC -> Tools -> Messages?
>> I wonder what is going on here...
>
> Message level 6 in mplayer gives the following near the problematic part:
>
> [ac3 @ 0xb6a4b980]frame CRC mismatch
> [ac3 @ 0xb6a4b980]frame sync error
> lavc_audio: error
> A:2003.2 V:2003.3 A-V: -0.056 ct: -0.020 195/195  6%  0%  0.5% 1 0 49%
> DVD sub: len=1256  v_pts=2003.294  s_pts=2003.414  ts=180307231
>
> In VLC messages (Verbosity 2) we get this:
>
> main debug: Decoder buffering done in 9 ms
> dvdnav debug: DVDNAV_NOP
> dvdnav debug: DVDNAV_CELL_CHANGE
> dvdnav debug: - cellN=13
> dvdnav debug: - pgN=13
> dvdnav debug: - cell_length=17420400
> dvdnav debug: - pg_length=17420400
> dvdnav debug: - pgc_length=221220000
> dvdnav debug: - cell_start=180280800
> dvdnav debug: - pg_start=180280800
> dvdnav debug: DVDNAV_SPU_CLUT_CHANGE
> dvdnav debug: DVDNAV_SPU_STREAM_CHANGE
> dvdnav debug: - physical_wide=128
> dvdnav debug: - physical_letterbox=128
> dvdnav debug: - physical_pan_scan=128
> dvdnav debug: buttonUpdate not done b=3 t=1
> dvdnav debug: DVDNAV_AUDIO_STREAM_CHANGE
> dvdnav debug: - physical=0
> dvdnav debug: buttonUpdate not done b=3 t=1
> pulse debug: underflow

Hmm looks like some type of split between cells or something...though
I don't really know what I'm talking about.

If there is a long pause within both VLC (did you try nightlites/git
master?) and mplayer then you and I both imagine that it's some type
of weirdness in libdvdnav...hmm...
Anyway I'm out of ideas, anybody else want to handle this one?