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NAL size for H264 baseline

llx
Beginner
334 Views

Hi,

Some client support one NAL per packet (1460bytes per RTP packet) mode only. When I try to encode a QCIF sequence, the firstNAL is 2112 bytes: much bigger than 1460bytes. This will also causea packet burst that willbe blocked by some gateways in the low bit-rate network. How do I control the NAL size and I-framein umc_video_enc_con?

Thanks.

llx

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Vladimir_Dudnik
Employee
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That might be something like adaptive increasing quant parameter untill you met compressed frame size requirements

This is not demostrated in umc_video_enc_con application

Regards,
Vladimir

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llx
Beginner
334 Views

Hi Vladimir,

Do you have some examples of that? Or would you refer me to the document that I can follow? This is a mandatory feature because many H264 clients especially the phones has restriction on this. Thank you very much.

llx

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llx
Beginner
334 Views

Can an Iframe be divided to several slices? In this way, the NAL size will be limited.

How could I do that in umc_video_enc_con? Thanks.

llx

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