[FFmpeg-devel] question: why (pts < dts) is Invalid timestamps

[Michael Niedermayer]

On Fri, Jan 06, 2012 at 03:25:31PM +0200, Maksym Veremeyenko wrote:
> 06.01.12 10:57, Geek.Song написав(ла):
> >2012/1/6 Maksym Veremeyenko<verem at m1stereo.tv>:
> [...]
> >>assume we have a GOP IBBP with time base 1/1000000
> >>
> >>ORDER  TYPE       DTS      PTS
> >>    0     I         0        0
> >>    1     P     40000   120000
> >>    2     B     80000    40000
> >>    3     B    120000    80000
> >>
> >>what is wrong?
> >>
> >
> >the DTS column is wrong, DTS  should start from negative value  such as
> >
> >DTS
> >
> >-80000
> >-40000
> >0
> >40000
> >
> 
> would it be correct?:
> 
> ORDER  TYPE       DTS      PTS
>     0     I    -40000        0
>     1     P         0   120000
>     2     B     40000    40000
>     3     B     80000    80000
> 
> another things to clarify:

looks correct to me


> 
> 1. are there any restriction against storing negative DTS in index table?

what index table ? AVIndex? you can store anything there
for fileformats it depends on the format .


> 
> 2. would it be proper to calculate DTS xxx_read_packet instead of
> storing negative?
> 
> 3. does require to setup AVStream.start_time to 0?

I dont understand these 2 questions

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I know you won't believe me, but the highest form of Human Excellence is
to question oneself and others. -- Socrates
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