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This is a real blow to sites that rely on Flash's RTMP for low-latency live streaming. There's no real HTML5 equivalent right now. HLS and MPEG-DASH have a dela

by innix 10y ago

This is a real blow to sites that rely on Flash's RTMP for low-latency live streaming. There's no real HTML5 equivalent right now. HLS and MPEG-DASH have a delay of around 30 seconds, often more.

slederer 10y ago
We did tests here and got down to 8 seconds end to end delay, including transcoding. but also HTTP2.0 push will be super interesting here.
- ericzawo 10y ago
  Wow, impressive! I'm waiting for the day where my internet stream is 'Live' like my television is 'live.'
  - daenney 10y ago
    Though not imposed by the technology most of your live TV isn't actually live. There's a thing known as the broadcast delay or the seven seconds delay that a lot of broadcasters use to beep out profanities or do live subtitles and other alterations.
  - ramy_d 10y ago
    I did a cursory search out of curiosity: TV has a 7 second delay they add themselves to filter content. The broadcast itself is pretty much instant. It's impressive.
    - mikeryan 10y ago
      Depends on Delivery mechanism as well. Interestingly if you put a TV using cable next to a TV using satellite the satellite TV will trail cable by 2-3 seconds sometimes just from the amount of time to bounce the signal off of satellites.
      - jonknee 10y ago
        The actual round trip time to the satellite and back is about a quarter second.
    - birdman3131 10y ago
      I work for a church that does live broadcasts. We see about a 3-5 second delay on OTA and about a 4-6 second delay on cable. We are tied to the tv station by a fiber line and they are only a block or so away.
      - ramy_d 10y ago
        interesting!
gmfawcett 10y ago
Yes, we depend on Flash for this, too. I worry about Flash disappearing from the ecosystem before HTML5 streaming matures enough to deliver a decent, cross-platform-consistent live-streaming experience.
- BatFastard 10y ago
  Just give HTML5 another 10 years to catch up. I am sure it will be ready by then.
GFischer 10y ago
You can do the trick with WebRTC + a SFU (like Jitsi), but the bandwidth cost might be higher. https://jitsi.org/Projects/JitsiVideobridge https://jitsi.org/Projects/JitsiVideobridge
Veratyr 10y ago
You can get MPEG-DASH latency far below 30s: https://github.com/gpac/node-gpac-dash https://github.com/gpac/node-gpac-dash

by innix 10y ago

This is a real blow to sites that rely on Flash's RTMP for low-latency live streaming. There's no real HTML5 equivalent right now. HLS and MPEG-DASH have a delay of around 30 seconds, often more.

slederer 10y ago

We did tests here and got down to 8 seconds end to end delay, including transcoding. but also HTTP2.0 push will be super interesting here.

ericzawo 10y ago
Wow, impressive! I'm waiting for the day where my internet stream is 'Live' like my television is 'live.'
- daenney 10y ago
  Though not imposed by the technology most of your live TV isn't actually live. There's a thing known as the broadcast delay or the seven seconds delay that a lot of broadcasters use to beep out profanities or do live subtitles and other alterations.
- ramy_d 10y ago
  I did a cursory search out of curiosity: TV has a 7 second delay they add themselves to filter content. The broadcast itself is pretty much instant. It's impressive.
  - mikeryan 10y ago
    Depends on Delivery mechanism as well. Interestingly if you put a TV using cable next to a TV using satellite the satellite TV will trail cable by 2-3 seconds sometimes just from the amount of time to bounce the signal off of satellites.
    - jonknee 10y ago
      The actual round trip time to the satellite and back is about a quarter second.
  - birdman3131 10y ago
    I work for a church that does live broadcasts. We see about a 3-5 second delay on OTA and about a 4-6 second delay on cable. We are tied to the tv station by a fiber line and they are only a block or so away.
    - ramy_d 10y ago
      interesting!

gmfawcett 10y ago

Yes, we depend on Flash for this, too. I worry about Flash disappearing from the ecosystem before HTML5 streaming matures enough to deliver a decent, cross-platform-consistent live-streaming experience.

BatFastard 10y ago
Just give HTML5 another 10 years to catch up. I am sure it will be ready by then.

GFischer 10y ago

You can do the trick with WebRTC + a SFU (like Jitsi), but the bandwidth cost might be higher. https://jitsi.org/Projects/JitsiVideobridge https://jitsi.org/Projects/JitsiVideobridge

Veratyr 10y ago

You can get MPEG-DASH latency far below 30s: https://github.com/gpac/node-gpac-dash https://github.com/gpac/node-gpac-dash