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AVCHD Format Discussion
Inexpensive High Definition H.264 encoding to DVD, Hard Disc or SD Card.


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Old December 19th, 2009, 12:29 PM   #1
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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
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Old December 21st, 2009, 08:17 AM   #2
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How did you get the 1080p option? I've uploaded loads of files and only normal 720p I get :/
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Old December 21st, 2009, 09:09 PM   #3
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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
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Old December 22nd, 2009, 02:56 AM   #4
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hmm logged out and check and dont get the option at home

At work I do? Is there a update I need to install?
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Old December 22nd, 2009, 09:18 AM   #5
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you could try uploading the newest flash player and see what happens. I have no idea on that one.
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Old December 22nd, 2009, 09:31 AM   #6
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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.
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Old December 29th, 2009, 04:23 PM   #7
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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).
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Old December 29th, 2009, 07:12 PM   #8
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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)
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Old December 29th, 2009, 08:30 PM   #9
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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.
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Old December 29th, 2009, 08:54 PM   #10
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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. :)
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Old December 29th, 2009, 11:41 PM   #11
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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?)
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Old December 30th, 2009, 12:48 AM   #12
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I'll upload it tonight and post a link tomorrow... Thanks. :)

edit:
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Last edited by Erik Phairas; December 30th, 2009 at 03:11 AM.
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Old December 30th, 2009, 06:56 AM   #13
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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
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Old December 30th, 2009, 09:41 AM   #14
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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.
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Old January 18th, 2010, 02:56 AM   #15
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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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