[FFmpeg-devel] [PATCH] Description of avcodec_encode_audio()

[John Fletcher]

> > I wish to encode 1920 samples of audio to a 16-bit PCM 
> format, say for example using CODEC_ID_PCM_S16BE.
> > 
> > I need to set the size of the output buffer, buf_size, to 
> 1920 * 2 = 3840 to achieve that.
> 
> no, you need to set it to 3840 or a larger value

No, the function uses buf_size to decide how many samples to encode so you have to set it to exactly 3840 in this case.

John