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ntt73
Beginner
81 Views

Output MPEG4Muxer to memory?

Hi,

I have two questions. First, I want to mux two tracks, video and metadata into MPEG4 container, how do I specify which track to put metadata (VBI_TRACK, or UNDEF_TRACK)? Second, in the simplemuxer.cpp example there is a FileWriter defined for the MuxerParam. What if I don't want to output to file? Would there be a runtime error if I didn't specify a writer?

Thanks in Advance.

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2 Replies
Sergey_O_Intel1
Employee
81 Views

1.MP4Muxer supports video and audio tracks only. VBI_TRACK type is used in MPEG2Muxer.

2. As you can see in the code if MuxerParams->m_lpDataWriter is zero you'll get UMC_ERR_NULL_PTR error in MP4Muxer::Init. If you don't need the output from Muxer what do you use it for?

ntt73
Beginner
81 Views

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