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<div class="moz-cite-prefix">On 12/23/2016 3:53 AM, He Lei wrote:<br>
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<p class="MsoNormal"><span lang="EN-US">FFMpeg codes is clone
from git, that is version 3.0</span></p>
<p class="MsoNormal"><span lang="EN-US">I cross Compile to the
win32 platform;</span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">And enabled these
encoders/decoders:</span></p>
<p class="MsoNormal"><span lang="EN-US">aac,s16be,s16le,s16be_planar,s16le_planar</span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Enabled muxers/demuxers:</span></p>
<p class="MsoNormal"><span lang="EN-US">s16be,s16le,s16be_planar,s16le_planar</span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">None of the other.</span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US">But,
I found aac encoder only support fltp;
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">My src:</span></p>
<p class="MsoNormal"><span lang="EN-US"> m_pCodec =
avcodec_find_encoder(AV_CODEC_ID_AAC); //only fltp in
m_pCodec->sample_fmts</span></p>
<p class="MsoNormal"><span lang="EN-US"> m_pCodecCtx =
avcodec_alloc_context3(m_pCodec);</span></p>
<p class="MsoNormal"><span lang="EN-US">
avcodec_get_context_defaults3(m_pCodecCtx, m_pCodec);</span></p>
<p class="MsoNormal"><span lang="EN-US">
m_pCodecCtx->bit_rate = 6400;</span></p>
<p class="MsoNormal"><span lang="EN-US">
m_pCodecCtx->sample_fmt = AV_SAMPLE_FMT_S16S</span></p>
<p class="MsoNormal"><span lang="EN-US">
m_pCodecCtx->sample_rate = 44100;</span></p>
<p class="MsoNormal"><span lang="EN-US">
m_pCodecCtx->channel_layout = AV_CH_LAYOUT_STEREO;
</span></p>
<p class="MsoNormal"><span lang="EN-US">
m_pCodecCtx->channels =
av_get_channel_layout_nb_channels(m_pCodecCtx->channel_layout);</span></p>
<p class="MsoNormal"><span lang="EN-US"> iRet =
avcodec_open2(m_pCodecCtx, m_pCodec, NULL); //return -22!!</span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US"><o:p> </o:p></span></p>
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<p>use a sound wave resampler context from s16 to fltp at the same
khz. <br>
</p>
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