Video Streaming with RethinkDB Changefeeds

#1

Post by ndarilek » Sat, Mar 21, 2015, 2:43 PM UTC

Video Streaming with RethinkDB Changefeeds
github.com

Re: Video Streaming with RethinkDB Changefeeds

#2

Post by iso8859-1 » Sat, Mar 21, 2015, 3:23 PM UTC

how many FPS and how much CPU usage?

Re: Video Streaming with RethinkDB Changefeeds

#3

Post by dmarg » Sat, Mar 21, 2015, 3:26 PM UTC

iso8859-1 wrote: post #2

how many FPS and how much CPU usage?

Would definitely like to know this as well. Also, are there any dropped frames over a certain amount of time? Like 5 frames dropped every ten minutes.

Re: Video Streaming with RethinkDB Changefeeds

#4

Post by fsaintjacques » Sat, Mar 21, 2015, 3:29 PM UTC

Hah, Étienne, lord of hacks :)

Re: Video Streaming with RethinkDB Changefeeds

#5

Post by maxmcd » Sat, Mar 21, 2015, 3:34 PM UTC

iso8859-1 wrote: post #2

how many FPS and how much CPU usage?

The ffmpeg output in the gif shows 7.6 fps

Re: Video Streaming with RethinkDB Changefeeds

#6

Post by [deleted] » Sat, Mar 21, 2015, 3:34 PM UTC

iso8859-1 wrote: post #2

how many FPS and how much CPU usage?

[deleted]

Re: Video Streaming with RethinkDB Changefeeds

#7

Post by atnnn » Sat, Mar 21, 2015, 4:08 PM UTC

iso8859-1 wrote: post #2

how many FPS and how much CPU usage?

I told ffmpeg to use `-r 25` but the console output says `fps=7.6`.

I just put it together in a few hours to see if it was possible. Given the unexpected interest in it, I'll put some more work to see where we can take it.

Re: Video Streaming with RethinkDB Changefeeds

#8

Post by StavrosK » Sat, Mar 21, 2015, 4:11 PM UTC

I read the changefeeds post, but I don't think I understood exactly what they're for. Would clients be talking directly to the database, or would a persistent app worker block on database updates and then send this to the client?

Re: Video Streaming with RethinkDB Changefeeds

#9

Post by atnnn » Sat, Mar 21, 2015, 4:21 PM UTC

StavrosK wrote: post #8

I read the changefeeds post, but I don't think I understood exactly what they're for. Would clients be talking directly to the database, or would a persistent app worker block on database updates and then send this to the client?

An app usually sit between the database and the user, isolating them from each other. This demo does not isolate the database, it is just a proof of concept.

Re: Video Streaming with RethinkDB Changefeeds

#10

Post by StavrosK » Sat, Mar 21, 2015, 4:28 PM UTC

atnnn wrote: post #9

StavrosK wrote: post #8

I read the changefeeds post, but I don't think I understood exactly what they're for. Would clients be talking directly to the database, or would a persistent app worker block on database updates and then send this to the client?

An app usually sit between the database and the user, isolating them from each other. This demo does not isolate the database, it is just a proof of concept.

Sorry, I was asking about the way the changefeed feature is meant to be used, not about this demo specifically.