Le septidi 17 floréal, an CCXXI, Pradeep Karosiya a écrit : > I'm trying to encode raw audio samples. Though encoding is working fine. I'm > not able to understand some of the field of AVFrame specially related to > planar data. > Can someone explain what is the different between data and extended_data in > AVFrame and how they are use during encoding.
data serves when there are at most 8 channels, extended_data serves when there are more using a mallocated array of pointers. If in doubt, use extended_data, since it will always be a valid pointer, either to a mallocated or just to data. > I got the linesize which says that it contains the size of each channel. > But how the raw samples are stored in this structure. One after the other. Just cast the pointer to an arithmetic type of the correct size: "samples = (int16_t *)extended_data[channel]" for S16, etc. > Also do I need explicitly free memory buffers allocated during encoding? Depends how they were allocated. Using refcounted buffers is the preferred method nowadays. Regards, -- Nicolas George
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