Safari 11 - Not display video (H.264 Baseline)

[Alex Sky]

Hello.

Janus send video stream (plugin.streaming), Safari receiving this stream, but not display in video player.

But if proxy without converting in ffmpeg, then in Safari the video display perfectly:
ffmpeg -i rtsp://ip-camera/h264 -codec copy rtp://127.0.0.1:5050

What is the problem, why doesn't it work without ffmpeg?

Thanks.

[Alex Sky]

My research shows that the problem in values PTS/DTS in source pakages RTP video stream, FFMpeg automatically set correct values PTS/DTS, and everything works correctly.

I'm sorry, I'm not an expert in this topic, if someone knows more, help me.

[Lorenzo Miniero]

Not an expert either, sorry...

L.

[Anton Smith]

Interesting, I will try this rtsp->rtp copy and see if it works. I have been getting "black screens/spinning wheels" as well.

[S.A.N]

Correct command
ffmpeg -i 'rtsp://ip-camera' -an -codec copy -f rtp 'rtp://127.0.0.1:20000'

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[Anton Smith]

Hi,

I tried this and it improved firefox greatly (previously had been very choppy), however it didn't result in safari working.

Safari displays the bandwidth meter with changing numbers, if I wave my hand in front of the camera it increases as I would expect it to, but no video is displaying.

I haven't yet found anyway to get debug out of safari to tell me if it is barfing on the video format.

when I run ffmpeg it claims sdp details: a=fmtp:96 packetization-mode=1; sprop-parameter-sets=Z00AH5pmAoAt/zUBAQFAAAD6AAATiAE=,aO48gA==; profile-level-id=4D001F = main profile level 3.1.

During negotation between safari/janus, I have overridden this with 42E01F. This works for chrome, FF, opera. I guess their decoder can handle main profile. I am surprised that Safari 11 cannot, assuming this is the actual problem.

My issue is I am using an RPI as the RTSP/janus gateway, and it doesn't have the horsepower to transcode. Having said that I have tried transcoding to baseline, 3.1 on a more powerful machine and that didn't work either (but I will try again to see if it is a combination of the PTS/DTS stuff and profile). OMX for RPI does not let you set level-id unfortunately, it crashes.

Regards,
Anton

[S.A.N]

Maybe you have a problem with HTML5 video player, is example code
<video muted autoplay playsinline onclick = this.play() ></video>

Here more
https://webkit.org/blog/6784/new-video-policies-for-ios/