Set the H264 preset. It will affect encoding speed and compression ratio.
STDMETHOD SetH264Preset(BSTR bstr)
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The value of bstr string is
ultrafast
superfast
veryfast
faster
fast
medium
slow
slower
veryslow
For SetHwCodec(1) , you may use the following value.
"slow"
"medium"
"fast"
"hp"
"hq"
"bd"
"ll"
"llhq"
"llhp"
"lossless"
"losslesshp"
VC++ Example:
CComQIPtr<IMP4Manager, &IID_IDirectMP4EncoderConfig> pProfile(mMP4EncoderFilter);
pProfile->SetH264Preset(L"superfast");
pProfile->SetMp4VideoBitrate(4600000);
pProfile->SetMp4AspectRatio(false);
pProfile->SetMp4AudioBitrate(96000);
pProfile->SetMp4AudioSampleRate(48000);
pProfile->SetMp4AudioChannel(2);
pProfile->SetMp4FrameRate(25);
pProfile->SetMp4Resolution(1280,720);
pProfile->SetTitle(L"My Title");
pProfile->SetAlbum(L"My Album");
pProfile->SetAuthor(L"My Author");
pProfile->SetComment(L"My Comment");
pProfile->SetCopyright(L"My Copyright");
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