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post #6031 of 6034 Old Yesterday, 06:52 PM
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Originally Posted by michaeltscott View Post
Not unless they've upgraded it. Amazon's 720p has always been <= 3000 Kbps in the past, including audio. Netflix's highest bit rate 720p is 3000 Kbps. Netflix's 3K 720p is also encoded with eyeIO technology (awarded THX certification at 5800 Kbps), which claims to deliver the same PQ in 50%-60% the bandwidth used by other AVC encoders.

The following is a graph of bandwidth consumption of Ong Bak 2: The Beginning (a very encoder-challenging sequence of martial arts combat in the rain), as streamed from Amazon to a Roku 2 XS:




(I'd usually crop and re-scale the graph, adding labels, but I don't feel like it ). The data was acquired on 10/13/2012. Sadly, it's not Prime anymore or I'd ask one of you running router firmware with a bandwidth monitor to take a look at it now.
Re Tubetwister

I'm just going by the post I linked,

I haven't seen any other info on that that's why I said "I believe Amazon is using ....." and mentioned encode efficiency at the end . I'll leave the science of that to to you ☺☺☺looks like it works pretty good though

OTOH Amazon HD 1080p/720p on the Roku seems to be looking better than B4 now .

I'm using a Stock ATT U Verse 3801 RGW WIFI thingy so no bandwith monitering or jail breaking software there it would be interesting to see what Roku throughput on Amazon instant is though I would like to see that .


OTOH with bandwidth caps Netflix is the place to be and also they have much more content and TBH it looks fine
2 me in any of the 1080p steps .

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post #6032 of 6034 Old Yesterday, 06:58 PM
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Originally Posted by tubetwister View Post
In my experience here Amazon HD looks pretty good often better than Netflix super HD but not always that much


Thing is Amazon instant uses a much higher 720p bit rate than Netflix something like ~ 9.7 Mbps (on supported devices)


I believe Amazon Instant (on supported devices ) uses something like 12-13 Mbps on 1080p HD instead of the usual ~5-6 Mbps on Netflix super HD
Agreed Amazon 1080P HD does indeed look better than Netflix 1080P

Sorry I may have mislead you on the 720P rates on the Fire TV. Those were my measurements on Rubicon. I am now pretty sure the 9.75 Mbps average over the entire two episodes was 1080P. When the Fire TV was released it would show a 1080P logo when streaming at 1080P from Amazon Instant. For the last month or so the 1080P logo has disappeared - but not I think the 1080P streaming.

Yes as you quote I have seen 12 - 13 Mpbs (and higher) 10 minute averages on some Amazon Instant titles - although again to get a more accurate number I think I need to play the entire movie and divide the data downloaded by the length of the movie. The 10 minute averages are a snapshot - but may not represent the average over the movie. When I have time to do a complete movie I may try this.

Attached is the first 10 minutes of Marvel's Avengers on a Fire TV on Amazon Instant. As you can see it averages a surprisingly high 14.8 Mbps - but does include filling the buffer at the start of playback. The average streaming late is likely to be somewhat lower.
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post #6033 of 6034 Old Yesterday, 08:00 PM
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Attached is the first 10 minutes of Marvel's Avengers on a Fire TV on Amazon Instant. As you can see it averages a surprisingly high 14.8 Mbps - but does include filling the buffer at the start of playback. The average streaming late is likely to be somewhat lower.

If you can, try constraining the output to 720p and see what you get.

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post #6034 of 6034 Old Today, 03:41 AM
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Agreed Amazon 1080P HD does indeed look better than Netflix 1080P

Sorry I may have mislead you on the 720P rates on the Fire TV. Those were my measurements on Rubicon. I am now pretty sure the 9.75 Mbps average over the entire two episodes was 1080P. When the Fire TV was released it would show a 1080P logo when streaming at 1080P from Amazon Instant. For the last month or so the 1080P logo has disappeared - but not I think the 1080P streaming.

Yes as you quote I have seen 12 - 13 Mpbs (and higher) 10 minute averages on some Amazon Instant titles - although again to get a more accurate number I think I need to play the entire movie and divide the data downloaded by the length of the movie. The 10 minute averages are a snapshot - but may not represent the average over the movie. When I have time to do a complete movie I may try this.

Attached is the first 10 minutes of Marvel's Avengers on a Fire TV on Amazon Instant. As you can see it averages a surprisingly high 14.8 Mbps - but does include filling the buffer at the start of playback. The average streaming late is likely to be somewhat lower.
Re Tubetwister

Thanks for hooking us up with what you have so far I had no clue at all about Amazon Bit Rates B4 today
seems like you know a ton more about this stuff (plenty ) ,more than I do probably than I thought at first !

I owe you one ..............but I did get 5800 kbs pretty regular on a 6 mbps over provisioned service .
it did surprise me though .... I about fell out of my chair when I first saw it !

My 18 mbps is like that it hangs out in the 20 - 21's I don't think ever seen it much below 20 mbps
Netflix is taking longer to ramp up to 5800kbps last couple of days maybe it was the weekend thing .

Sometimes If I can score a prime movie or free show @ 1080p on Amazon instead of Netflix I watch it there usually stays where its supposed to and can look a little better sometimes and they don't make you wait much ramping up usually

I like the new genres they added on the front page sometimes they have a lot of decent watchable stuff on prime you can't find any where else also lots of PBS stuff also probably almost as much as PBS has tons .

Amazon 720p feed worked out well also . Not the place 2B if U have bandwidth caps though
Netflix is looking better lately though and they have lot of stuff between those 2 its a good set up .

regards

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