[FFmpeg-devel] [OPW] OPW Project Proposal

[Pallavi Kumari]

Hi Michael,

I have attached a patch with the mail.

With `avcodec_get_frame_defaults (&frame)` in the function readAudio
program was working fine with old version in my system. But this function
is not in the latest git repo so I used `av_frame_unref(&frame)` instead
and the program segfaults. I am not sure why or how to fix this.

Also, I haven't properly understood the input and output flow of
libavfilters (how to write input and output links? and overall flow). Could
you explain it to me?



On Thu, Oct 27, 2016 at 3:24 AM, Michael Niedermayer <michael at niedermayer.cc
> wrote:

> On Thu, Oct 27, 2016 at 12:40:53AM +0530, Pallavi Kumari wrote:
> > I mean deciding a timeline for the opw project. Which is to be mentioned
> in
> > application
>
> its your application, you can choose whatever timeline you feel makes
> sense.
> As far as iam concered whats important is to finish the qualification
> task well before we have to choose the applicant(s) we accept this
> year.
>
> The timeline for the main project in dec-mar can be segmented as you
> like but leave plenty of time toward the end, problems always occur
> and things get delayed.
> Also both for qualification and the main project submit code early
> if you have questions ask early,
> if you dont get satisfactory reply from me on something ask again and
> louder/clearer ... i do sometimes also forget to reply until i then
> remember again days later ...
>
> also i think the architecture wasnt discussed much yet
> do you have some plans about it ?
>
> I mean for example there could be a avfilter that passes audio through
> and adds fingerint(s) as metadata into thf AVFrame
> (as with avpriv_frame_get_metadatap in vf_idet.c) and also print the
> fingerprints via av_log()
>
> a 2nd filter could then look these fingerprints from the metadata
> up in some file/database
>
> a 3rd one could add the fingerprints to the file/database
>
> or these also could all be in one filter of course
>
> this can be extended in the future to for example have a filter
> delay the audio until lookup succeeds and then once identified
> lookup lyrics online and add them or such (this of course would be a
> future thing after outreachy/opw)
>
> but maybe you have a different plan on how the components would
> interact ?
>
> thx
>
> >
> > On Wed, Oct 26, 2016 at 6:01 PM, Michael Niedermayer
> <michael at niedermayer.cc
> > > wrote:
> >
> > > Hi
> > >
> > > On Mon, Oct 17, 2016 at 02:06:26PM +0530, Pallavi Kumari wrote:
> > > > Hi Michael,
> > > >
> > > > I figured out the use of fft. Help me with the time line setting.
> Thanks
> > >
> > > I dont understand the question,
> > > if its about AVFILTER_FLAG_SUPPORT_TIMELINE*, please ignore this for
> > > now, its not needed
> > >
> > > [...]
> > > --
> > > Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC7
> 87040B0FAB
> > >
> > > Rewriting code that is poorly written but fully understood is good.
> > > Rewriting code that one doesnt understand is a sign that one is less
> smart
> > > then the original author, trying to rewrite it will not make it better.
> > >
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel at ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> He who knows, does not speak. He who speaks, does not know. -- Lao Tsu
>
> _______________________________________________
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>
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