[FFmpeg-devel] [PATCH 27/28] fixed: wrong fps for rmvb files (patch by taxigps)

Michael Niedermayer michaelni
Wed Jun 30 21:28:47 CEST 2010

On Wed, Jun 30, 2010 at 10:50:12AM +0100, M?ns Rullg?rd wrote:
> Kostya Shishkov <kostya.shishkov at gmail.com> writes:
> > 2010/6/30 M?ns Rullg?rd <mans at mansr.com>:
> >> Kostya Shishkov <kostya.shishkov at gmail.com> writes:
> >>
> >>> On 30 June 2010 11:13, Alexander Strange <astrange at ithinksw.com> wrote:
> >>>>
> >>>> On Jun 30, 2010, at 2:09 AM, Mans Rullgard wrote:
> >>>>
> >>>>> From: Cory Fields <theuni-nospam- at xbmc.org>
> >>>>
> >>>> Is there a sample for this one, or do all rmvb files have obviously
> >>>> bad times?
> >>>
> >>> All of them. IIRC this patch was discussed for several times without any real
> >>> conclusion (you know how eager Buffering Inc provides specs on RMVB). I'm
> >>> inclined to believe that patch is OK, so unless Ronald objects, apply it.
> >>
> >> The patch is correct as such, but it's not the full solution. ?It only
> >> fixes the reported framerate. ?All the video timestamps are still
> >> messed up.
> >
> > Well, we can do the same way as in FFmbc - parse video frame headers
> > for real timestamps, at least RV3/4 have it in its headers and looks
> > like RV2 also does.
> FWIW, ffmpeg -fflags +nofillin works wonderfully on these files...

its all a question on how one defines wonderfully, the timestamps are as
wrong as without that.
That is with Blade2_640_1Mbps.rm which is what i had locally laying around
and without this patch, ill look at the case with the patch in a moment

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

If a bugfix only changes things apparently unrelated to the bug with no
further explanation, that is a good sign that the bugfix is wrong.
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