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Using “audio_fifo” to cache samples, When the samples number in fifo is enough to 1024, and then encode it.
<div class="">The last, If the number of samples is less than 1024 in fifo, fill with mute</div>
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<div class="">look at “<span style="font-family: Menlo; font-size: 11px;" class="">doc/examples/transcode_aac.c</span>”</div>
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<div class="">LeiHec<br class="">
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<a href="mailto:helei0908@hotmail.com" class="">helei0908@hotmail.com</a></div>
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<div class="">在 2018年10月26日，下午4:34，강구철 <<a href="mailto:kckang@skycom.ne.kr" class="">kckang@skycom.ne.kr</a>> 写道：</div>
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<span lang="EN-US" class="">Im transcode voice comming from WebRTC through by RTP with h264 video.<o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">received sound unit is 20msec OPUS stereo 48000 2channel sample per second<o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">its good decoded to PCM32 FLTP type and good play.<span class="Apple-converted-space"> </span><o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">after decode I encode to AAC 48000 stereo frame nb_samples is 960. but encoding ffmpeg aac function<span class="Apple-converted-space"> </span><o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">attach 64 samples every each decoded raw PCM samples. what should I do for it to improving final aac product quality ?<o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-US" class="">now I found AAC Context be able to control cypher block size 1024 to 960. some documents say aac encoder default block is 1024.<o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-US" class="">AACContext *ac = (AACContext*)aac_context->priv_data;<o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">MPEG4AudioConfig *m4ac = &(ac->oc[0].m4ac);<o:p class=""></o:p></span></div>
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<span lang="EN-US" class="">m4ac->frame_length_short = 1;//1:960, 0:1024<o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-US" class="">is this right approching ? appriciate any kinds of oppinion of you guys!!<o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-US" class=""><o:p class=""> </o:p></span></div>
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