[MPlayer-users] Why does a -dumpstream dump not play when mplayer can play the DVD directly fine?

[Alex Bennee]

On 15 May 2012 20:40, Andy Furniss <andyqos at ukfsn.org> wrote:
> Alex Bennee wrote:
>>
>> On 5 May 2012 10:37, Andy Furniss<andyqos at ukfsn.org>  wrote:
>>>
>>> Alex Bennee wrote:
>>>>
>>>>
>>>> Hi,
>>>>
>>>> I'm having some problems ripping some of the DVDs in my collection.
>>>> The DVD plays fine with a normal command line, e.g.:
>>>
>>> <snip>
>>>>
>>>> mplayer dvd://2 -dumpstream -dumpfile test.vob
>>>
>>>
>>> The first thing to try if mplayer can't play a stream is to use -demuxer
>>> lavf. If you already are using it - try without.
>>
>>
>> I get the same un-playable results with -demux lavfpref, lavf and default.
>>
>> Interestingly the second and third runs worked very quickly, I assume
>> because
>> the block cache was warm with the raw data from the DVD.
>>
>> Any other suggestions?
>
>
> Probably not that are much use :-)
>
> Does it manage play if you skip forward?
>
> I notice you had some errors even when it worked from disk, maybe you could
> try the option to slow the disk down.
>
> I've never used it, from the man -
>
> -dvd-speed <factor or speed in KB/s> (DVD only)
>              Try to limit DVD speed (default: 0, no change).  DVD base
>  speed
>              is  about  1350KB/s,  so  a  8x  drive  can read at speeds up
> to
>              10800KB/s.  Slower speeds make the drive more quiet, for
>  watch-
>              ing  DVDs 2700KB/s should be quiet and fast enough. MPlayer re-
>              sets the speed to the drive default value on close. Values less
>              than  100  mean multiples of 1350KB/s, i.e. -dvd-speed 8
> selects
>              10800KB/s.
>              NOTE: You need write access to the  DVD  device  to change  the
>              speed.



-- 
Alex, homepage: http://www.bennee.com/~alex/
http://www.half-llama.co.uk