[MPlayer-users] Incomplete file behaviour

[belcampo]

Reimar Döffinger wrote:
> On Mon, Mar 31, 2008 at 09:06:00PM +0200, belcampo wrote:
>> Reimar Döffinger wrote:
>>> On Mon, Mar 31, 2008 at 03:38:15PM +0200, belcampo wrote:
>>>> If the contents of a 1000 sec h264 file would be on a distributed 
>>>> filesystem, on say a 1000 computers, and 1 would not be available, so 25 
>>>> frames would be missing, how would mplayer react on this, hang, or skip 
>>>> 1 sec and play the rest of the file ?
>>> Sorry, this is too little information to even _guess_. What do you
>>> consider a "h264 file"? H.264 Annex B / ES or H.264 in MPEG-TS, or in
>>> MPEG-PS or in MOV/MP4?
>> MOV/MP4
> 
> Since MOV/MP4 _needs_ and index, one missing piece (at beginning or end)
> can mean that the file is impossible to play, no matter which player you
> use.
It's a hinted MP4. I can start playing a remote-file because file-info 
is at the beginning
> 
>>>   does it wait for the missing computer to become available
>>> again,
>> No, one can write to the remaining computers
> 
> Well, writing behaviour is obviously irrelevant here.
> 
>>>   does it just return zeros, random data, or create and I/O error?
>> create I/O error
> 
> MPlayer will stop playing if it encounters an I/O error. This could be
> changed (by changing stream/stream_file.c the fill_buffer function to
> e.g. return a buffer filled with all 0 when the read fails), though the
> problem is that an I/O error is too little information, how do you know
> which is the next part of the file that is available? 
I think/hope/believe it will be in the mp4 container
Is the next byte
> available? Or is the whole next 1GB unavailable?
> In addition as long as you are using mov/mp4 it's questionable if there
> is any point in doing such a change.
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