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NAL type needed to build a frame should be in one packet, but it is split into different packets. #450

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antonymarion opened this issue Nov 18, 2024 · 7 comments

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@antonymarion
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antonymarion commented Nov 18, 2024

Hello Dji Team,

Testing the stream sent (using rtmp url) by both the mini 3 Pro and the 300 RTK, it seems that the NAL type is split into different packets.

This causes bugs (lagged stream) when using OvenMediaEngine and webtrc player.

Could you explain why it is split in different packets?

Is there any plan to fix this (maybe in the call done to ffmpeg on dji sdk side)?

Regards
Antony

@dji-dev
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dji-dev commented Nov 19, 2024

Agent comment from yating.liao in Zendesk ticket #122179:

What version of the MSDK are you currently using?

°°°

@antonymarion
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I can check it for you but it seemed to be the last one

@dji-dev
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dji-dev commented Nov 28, 2024

Agent comment from yating.liao in Zendesk ticket #122179:

Regarding MSDK V5, it does not directly provide WebRTC live streaming services. Did you enable RTMP live streaming and then use a WebRTC player for playback?
Due to the limitations of MTU size in relation to the size of RTMP packets, it is indeed possible that a packet may not fully transmit all NAL content.

°°°

@antonymarion
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Yes indeed, but can it be fixed on your side?

@dji-dev
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dji-dev commented Nov 28, 2024

Agent comment from yating.liao in Zendesk ticket #122179:

I think this should not be possible unless MSDK starts to support the WebRTC protocol, which is a completely new requirement for MSDK.

°°°

@antonymarion
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Ok good to know, thks

@dji-dev
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dji-dev commented Nov 29, 2024

Agent comment from yating.liao in Zendesk ticket #122179:

I hope this has been helpful to you. Wishing you all the best.

°°°

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