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

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

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

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

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

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

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.

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).

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)

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.

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. :)

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?)

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

edit:

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

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.

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)

I experimented with that other video (the one in a casino), and basically got the same visual quality (perhaps slightly better) at 720p using a little lower bitrate (720p around 3.5Mbps vs YouTube's 1080p at about 4Mbps). To achieve the quality I got though, I did some serious pre-compression filtering and used encoding settings that almost assuredly would not be practical for YouTube to use on a massive scale. It looks like perhaps YouTube is using a very brute force approach (really fast motion estimation, etc.), probably to make transcoding ultra fast. Given the massive numbers of videos they host, that probably makes sense economically. If they did what I did, with all their videos, they'd probably have to fill an office building with fast computers, and hire a small army of techs that are pretty knowledgeable about video compression. I do think that if they threw that same 4Mbps (using the same encoding parameters) at 720p instead of 1080p, it would look just as good though. In my experimenting, it was quite clear they didn't achieve any finer detail in the images at 1080p than can be achieved at 720p.

I haven't tried encoding a video in 720p using the same codec I used for the 1080p videos. I suppose I should give it a try.

I can see the difference in my 720p mp4 and my 1080p mts video on youtube but only just.

I just use WebVideoCap capture and then used G-Spot to read the file and it came up with this,

Codec: mp4a: MPEG-4 AAC LC
44100Hz 124 kb/s tot , stereo (2/0)
1920 x 1080
kbps 3285
29.971

I only captured the last part of the video in 1080P, so it was only a small sample.

Need help/Sorry if this is the wrong forum
 

Hi all,

I need some help and I apologize if this is the wrong part of the forum. I know this has been discussed already and I have followed most of the instructions, but it's not working.
I'm trying to upload a video to see if it will display in widescreen format on youtube. Right now, I don't care about the quality; I just want to see if it will work. I'm still getting the bars on the left/right.

my video is SD, but rendered/produced in 16:9 setting and 640/360 (just playing around) I've also saved it in 1280/720 and YT still displays it with the bars. I've even downloaded a small HD video and attempted to upload it with the same results. I have used SUPER Video converter, CinemaForge, and two other software programs and nothing works. My editing software is Premiere. (when you play these videos in QT and WMP it reflects the size of the video settings above).

Any information would be appreciated. Again, I dont care about the quality...I'm trying to get the procedure right.


Thanks much!

Quote: my video is SD, but rendered/produced in 16:9 setting and 640/360

I'm confused - it's SD (i.e. 4:3) but you are rendering to 640 by 360?

So your rendered footage must be either a) stretched horizontally, b) pillar-boxed (i.e. black bars left and right), or (c) missing the upper and lower parts of the original image, or (d) has non-square pixels so that it still plays back as 4:3 in mediaplayer.

The only one of those options that will give you correct-looking 16:9 footage on Youtube, without black bars, is option C. Is that what you are uploading?

Sd
 

Graham,

I sent you an email reference my question. Thanks for the time.

Can you really tell the difference between 720P and 1080P? I can't. I try out to upload 1080P and it finished upload to Youtube and the processing take forever to complete, 2 minutes video go an hrs and still processing. I'll stick with 720P.

I tripped across a freight train video yesterday in 1080p and 720p. The difference was extremely subtle, mostly coming across to me as a slight difference in brightness (go figure). The higher-res one stuttered some even though I have a fast PC, FIOS, and a video acclerator download product in place. Bottom line for that video: no significant difference visually, performance hit for going with the higher-res one.

I can't tell the difference between 720 and 1080, also my Macbook pro is not able to play a clip in 1080(don't play smooth).
But the videos of Erik could only be upload in 480 and a lot of people would not see the difference between 480 and 720.
but there is a big difference in the sound quality.

Wait are you making fun of my videos or of youtubes transcoder? :D