Awesome, this is the answer I was looking for. I will try it out and reply with the result.
Thanks On Sun, Dec 8, 2013 at 2:52 AM, <[email protected]> wrote: > > From: Taha Ansari <[email protected]> > To: This list is about using libavcodec, libavformat, libavutil, > libavdevice > and libavfilter. <[email protected]> > Sent: Sat, Dec 7, 2013 6:00 am > Subject: Re: [Libav-user] Converting from AV_SAMPLE_FMT_FLTP to > AV_SAMPLE_FMT_FLT > > On Fri, Dec 6, 2013 at 6:21 AM, Alexandru Rosca <[email protected]> wrote: > >> I am decoding audio and trying to convert it from the planar format to >> just FLT (packed?). I am making a library which when used will return the >> buffer with the data. I am using swr_convert but if I pass it >> frame.extended_data, it crashes. >> > > Yes, swr_convert functions should be able to do this without any problem. > > >> If I just pass it frame.data[0] I get really crackly audio on the other >> end. I suspect the problem is converting between these formats? Setting >> request_sample_fmt to av_sample_flt doesnt work. >> >> > You might want to share some workable sample code, otherwise it is pure > guessing. > > > >>>>>>> > > I do not use sws_convert to do this because there is no real conversion > necessary, just copying. Since I have to copy data from frame.data[] > anyway, I do a simple copy for non planar format. But with planar format, > channel 1's samples are in frame.data[0] and channel 2's samples are in > frame.data[1]. You just need to copy the 4-byte samples from the two > buffers to your single output buffer interleaved, i.e., channel 1 - sample > 0, channel 2 - sample 0, channel 1 - sample 1, channel 2 - sample 1, ... > > -Felix > > > > _______________________________________________ >> Libav-user mailing list >> [email protected] >> http://ffmpeg.org/mailman/listinfo/libav-user >> >> > _______________________________________________ > Libav-user mailing > [email protected]http://ffmpeg.org/mailman/listinfo/libav-user > > > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user > >
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