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-   -   1080p youtube test (https://www.dvinfo.net/forum/avchd-format-discussion/469685-1080p-youtube-test.html)

Erik Phairas December 19th, 2009 12:29 PM

1080p youtube test
 
Very short SR11 test. This was actually only recorded at 9mbps so if I plan to use this in the future I will use a higher bit rate...

on the video, next to the letters that say HD, you should see an arrow with the option of 720 or 1080...

kinda cool :)

YouTube - Four Stroke Wars 1080p video test

David Dwyer December 21st, 2009 08:17 AM

How did you get the 1080p option? I've uploaded loads of files and only normal 720p I get :/

Erik Phairas December 21st, 2009 09:09 PM

Log out of youtube and look at your video. It will not give you the 1080p option on your own videos for some reason.

I encoded the video as a Blu Ray Mpeg2

David Dwyer December 22nd, 2009 02:56 AM

hmm logged out and check and dont get the option at home

At work I do? Is there a update I need to install?

Erik Phairas December 22nd, 2009 09:18 AM

you could try uploading the newest flash player and see what happens. I have no idea on that one.

David Dwyer December 22nd, 2009 09:31 AM

Worked it out - Direct link to the video works but if you browse through the videos you just get the 720p

Guess its a bug.

Robert M Wright December 29th, 2009 04:23 PM

Watching that clip, I would think if YouTube re-encoded the source at the higher bitrate they appear to be using for 1080p, but as 720p, it might actually look better. I'm not sure what the point is, to over-compressing video at higher resolutions (as opposed to using the same bitrate, but at resolutions more reasonable for the bitrate being used).

Erik Phairas December 29th, 2009 07:12 PM

it could be because I used such a low bitrate to record it...

try this one and see if it looks better to you.. This was done with the EX3..

YouTube - 1080p video test Sony PMW-EX3 (Treasure Island las vegas)

Robert M Wright December 29th, 2009 08:30 PM

I'd be pretty surprised if a 720p version, encoded at the same bitrate (or maybe even lower), couldn't look noticeably better. How large is the file you uploaded? For the heck of it, I'd be happy to take exactly the same source file and encode a file the same size, resizing it (properly) to 720p first, and put it up on the web (using a flash player, on my own web space) for comparison.

Erik Phairas December 29th, 2009 08:54 PM

I used a high bitrate Blu Ray mpeg2. It is pretty big for that short clip. 114MB. Way overkill but it was just a test. :)

Robert M Wright December 29th, 2009 11:41 PM

I'm curious to take a whack at encoding it as 720p video, at the same bitrate, and see how it looks compared to what YouTube did to it with their new 1080p stuff. Is it convenient for you to upload that file you uploaded to YouTube, somewhere that I could get at it? (Perhaps Vimeo?)

Erik Phairas December 30th, 2009 12:48 AM

I'll upload it tonight and post a link tomorrow... Thanks. :)

edit:

Tony Neal December 30th, 2009 06:56 AM

Fleet review in 1080p
 
Out of curiosity I've just loaded my first YouTube clip in 1080p and was pleasantly suprised at the quality - looks very close to the original if a little stuttery.

It was encoded in h.264 VBR at a target bitrate of 15Mbps - I guess I could try dropping the bitrate to make the playback a bit smoother but maybe YouTube re-encode clips to a bitrate suitable for streaming - anybody know for sure ?

YouTube - Trafalgar 200 HD.mp4

Robert M Wright December 30th, 2009 09:41 AM

YouTube re-encodes your video, no what you send them. Sending them a new version at a lower bitrate won't do anything, aside from reducing the quality.

Erik Phairas January 18th, 2010 02:56 AM

Here is a full video in 1080p using my Sr11. We really need a forum just for posting vids like the EX cameras get.

YouTube - Four Stroke Wars Dumont 1-16-10 (1080p)


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