Pixelation in uploaded videos. Not there with previous uploads.

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Pixelation in uploaded videos. Not there with previous uploads. gwhguitarist 10/22/10 3:37 PM
I have uploaded several videos to youtube with no problems. Lately every video I upload has alot of pixelation or 'macro blocks'. I havent changed anything in my process. Just want to know if anyone else is having this problem and if its something youtube changed and a way i can fix it.

Here's a video I uploaded that looks fine to me:http:
//www.youtube.com/watch?v=dPzwSXrpnmI

And here's a video I uploaded using the exact same settings that has the pixelation:
http://www.youtube.com/watch?v=WkIQ8NX-zP4
Re: Pixelation in uploaded videos. Not there with previous uploads. ebbixx 10/22/10 4:27 PM
Yes, many people have been reporting similar levels of heavy compression.  Concensus seems to be that this is a byproduct of recent changes in YouTube encoding that are largely unfixable unless YouTube decides to make another change to improve it.  Tends to most heavily impact scenes with an almost uniform expanse of a single color.  Dark backgrounds and shots of cloudless skies are hit especially hard.
Re: Pixelation in uploaded videos. Not there with previous uploads. David Boyle 10/22/10 5:06 PM
Thanks for bringing this to our attention.  I will have a word with everyone involved in this and see if this is on our end.

Cheers,

Larry
Re: Pixelation in uploaded videos. Not there with previous uploads. ebbixx 10/22/10 8:30 PM
I'll try to link the more detailed analyses here then... or maybe someone can beat me to it?
Re: Pixelation in uploaded videos. Not there with previous uploads. raddish 10/23/10 1:02 AM
Thanks ytLarry for looking into this because I have also noticed the same problem. Current videos from uploaders who used to have clear quality videos now look extremely pixelated. I've noticed this problem in the past month, so if YouTube made any encoding changes during that time, perhaps there could be a correlation.

I look forward to a followup answer and an improvement in YouTube's video quality.

Thanks again.



Re: Pixelation in uploaded videos. Not there with previous uploads. ebbixx 10/23/10 8:03 AM
Here's one of the more detailed discussions on this issue: 


Will post more as I locate them.
Re: Pixelation in uploaded videos. Not there with previous uploads. Sylman 10/23/10 2:18 PM
Add me to the list of frustrated YouTube users who observed a worse change in the picture quality of the videos streaming on YouTube.

People are uploading videos in the same identical manner as before but instead of getting HD quality results, the videos appear like they are in low resolution format (pixilated).

Re: Pixelation in uploaded videos. Not there with previous uploads. raddish 10/23/10 8:34 PM
It's good we alerted YouTube to this dilemma. I just want videos to be crystal clear when they are viewed the way they used to be a few months ago.

Hopefully we'll hear back from ytLarry soon.
Re: Pixelation in uploaded videos. Not there with previous uploads. dolphindance 10/24/10 12:24 PM
I have had the same problem - just posted this to another thread.  The downsizing of 1080p videos to 480 and 720p is awful - especially in darker less distinct areas - very pixelated and blotchy.

Here is a video uploaded yesterday - http://www.youtube.com/watch?v=SP_FX-XNrmI   (see around 00:26 for some of the worst)

Here is a video uploaded several months ago (same settings - but different color correction)   http://www.youtube.com/watch?v=pzfbNjnlbto (see around 00:10 for the same scene with radically better rendering)

Both of these files were originally excellent quality 1080p h.264 . . .  but the downsizing of the recent video is terrible - both in 480 and 720p  (much worse by comparison with the video uploaded several months ago).

I hope youtube can fix this soon - we are trying to showcase our work, which is hard to do if it looks awful.

Re: Pixelation in uploaded videos. Not there with previous uploads. dolphindance 10/24/10 12:30 PM
Just to be clear - here is a list of videos that I would request be transcoded again . . . so the the downsized formats (360, 480, 720) don't look so pixelated and blotchy.

Re: Pixelation in uploaded videos. Not there with previous uploads. ebbixx 10/24/10 12:50 PM
@dolphindance - I can see how awesome that must be in the original quality.  While I hope some recent changes are signs that YouTube is beginning to pay attention again to quality, as practical, immediate advice, I would strongly suggest having a backup host such as Vimeo as well.  In my experience, there has yet to be a time where YouTube offered even half the quality that Vimeo does, and your material is clearly your own, so you should have no troubles there, unlike those whose videos contain much content that is not their own creation.
Re: Pixelation in uploaded videos. Not there with previous uploads. Braxter839 10/24/10 3:15 PM
On my YouTube, my videos stream automatically at 480 and they used to be perfectly clear. I don't know what's changed recently, but lately every video I watch is, as others have stated, blotchy and pixelated. My other computer streams at 360 and the videos look just as bad. Please fix this YouTube!
Re: Pixelation in uploaded videos. Not there with previous uploads. dolphindance 10/24/10 8:24 PM
@ebbixx  thank you for your encouragement.  

we have been using youtube for the audience exposure, but if we can't have the quality we had before, then we will have to move to vimeo.

i hope we'll get a response on monday - it must be kind of a big deal to google if all uploads look this bad.
Re: Pixelation in uploaded videos. Not there with previous uploads. raddish 10/25/10 1:11 AM
@dolphindance I'm anxious for a response today too. Hopefully this post will prompt Google/YouTube to fix the pixelation problem ASAP.
Re: Pixelation in uploaded videos. Not there with previous uploads. ebbixx 10/25/10 3:40 AM
Keep in mind your agreement with YouTube does not require exclusivity.  My sense is that most serious uploaders use at least one host other than YouTube.  YouTube succeeds at scaling and public access and on the second one tends to do better on that score for comedy, debate, interpersonal drama, and stuff interesting to teens.  It's rarely wise to limit yourself to one host.
Re: Pixelation in uploaded videos. Not there with previous uploads. David Boyle 10/25/10 8:17 AM
Thanks for posting these additional video URL's.  The more examples we have, the easier it is for us to find a solution.

Cheers,

Larry
Re: Pixelation in uploaded videos. Not there with previous uploads. raddish 10/25/10 12:28 PM
@ ytLarry thanks for touching bases with us and looking into this problem.

I found these random anime videos (made by the same user) as an example of the difference in quality. The before looked perfectly clear and the after is very pixelated and blotchy. Hope this example helps you.


Before (no pixelation): http://www.youtube.com/watch?v=FXB6M652wQk


After (pixelation problem): http://www.youtube.com/watch?v=F5O9D7kaL8E
Re: Pixelation in uploaded videos. Not there with previous uploads. raddish 10/27/10 1:47 PM
Any progress on fixing the pixelation problem?

ytLarry, I found 2 more videos (that were top favorited) that have pixelation issues:

http://www.youtube.com/watch?v=Uv6JNPM841A (all the background is pixelated and the dark areas are blotchy).

http://www.youtube.com/watch?v=vxvQqEWDv90 (all the background is pixelated).

It's a shame because otherwise these videos are outstanding!!!




Re: Pixelation in uploaded videos. Not there with previous uploads. dolphindance 10/27/10 3:02 PM
hi larry,

since you already commented on this chain - i would really appreciate an update, when you have one, about whether we should submit our videos again, or whether you will fix them once you have solved this problem . . .

i tried uploading a video again on the 25th, and it looked exactly the same - terribly splotchy and pixelated, especially in the dark scenes.

thank you for the help . . .
Re: Pixelation in uploaded videos. Not there with previous uploads. David Boyle 10/27/10 3:13 PM
Hey guys,

I have been pushing this as hard as I can, I assure you.  I will update you guys by the end of the day today with some more definitive information.

cheers,

Larry
Re: Pixelation in uploaded videos. Not there with previous uploads. raddish 10/28/10 1:22 PM
Thank you for working on this problem. Any updates?
Re: Pixelation in uploaded videos. Not there with previous uploads. vsx18 10/29/10 12:44 PM
There are massive pixels on HD videos which are ruining the clarity. When is this going to be fixed?
Re: Pixelation in uploaded videos. Not there with previous uploads. David Boyle 10/29/10 12:47 PM
Hi,

Continue to post URL's of your videos that are affected by this, and I will look at them.


Thanks,

Larry
Re: Pixelation in uploaded videos. Not there with previous uploads. peroyomas 10/29/10 1:57 PM
http://www.youtube.com/user/SofocaProducciones
All the videos in this account I have look pixelated on HD definitions (720p and 1080p). Oddly, the ones whose top size is 480p are pixelated at that resolution, too. The original videos looks very clean on my computer. Seems that there's a problem with videos whose resolution isn't divisible by 16, like 1080p, so many people have been uploading their videos at 1072p instead. I uploaded a hidden video at a resolution divisible by 16 (1536*1152) and look without problem in all sizes, but I don't need the option to view the "original" size and I just can't do that with all videos. Is very annoying to loose pixels when we do animation or screen captures where we need detail (as noted in http://www.youtube.com/watch?v=jZWP3D5YlmY), although the problem don't affect some videos by some reason (as seen in http://www.youtube.com/watch?v=6boDfu_abzg).
I just wish these got reencoded OR finally allowing replacing a video while retaining the URL and stats.
Re: Pixelation in uploaded videos. Not there with previous uploads. vsx18 10/29/10 4:42 PM
Did YouTube reencode their videos sometime in like September or October?

Because before that, HD, 480, and 360 quality was great. But ever since then, the quality has gotten bad, low in resolution, and pixels everywhere.

I'm using the same render settings as before when there were no problems, so what changed? (I use Sony Vegas Pro 8.0 using the 480 template (4.8 Mbps HD 720-24p Video). I've also tried the 6.0 and 8.0 render template with the same poor quality results).
Re: Pixelation in uploaded videos. Not there with previous uploads. David Boyle 10/29/10 5:21 PM
Hey guys,

I have actually checked the source of many of these videos and problems are there, rather than on our end.  In any case, if I can figure out anything else that will help you all resolve this, I will let you know.

Cheers,

Larry
Re: Pixelation in uploaded videos. Not there with previous uploads. dolphindance 10/29/10 10:14 PM
Larry, I can guarantee that it is not in our original files . . .  Please check ours again.

The pixelation is extreme - and I believe the theory that it has to do with the introduction of VBR encoding on your end (or some change to it).  The bitrate in the darker scenes drops to 200 kbps.   How could they not be pixelated terribly.

Please, do not discount this issue - these are excellent 1080p videos in their original form - and they look terrible in your 480 and 720 versions (the mobile version is actually a bit better)  . . .  even your 1080 version has some smaller pixelation.

I can also verify that if i re-upload the videos - they end up transcoded the same way.

Most important, it is essential to be updated when either the videos have been re-transcoded (so we can publicize them) - or when your transcoding system has been fixed so that we can submit our videos again.

Thank you for your attention to this issue - just look at the videos I provided in 480 or 720, there is a real issue here.  We can't afford to upload anything more to Youtube until we know it will look good enough, something comparable to the quality of all our previous videos.

quoted from my previous post ----------

Here is a video uploaded yesterday - http://www.youtube.com/watch?v=SP_FX-XNrmI   (see around 00:26 for some of the worst)

Here is a video uploaded several months ago (same settings - but different color correction)   http://www.youtube.com/watch?v=pzfbNjnlbto (see around 00:10 for the same scene with radically better rendering)

Both of these files were originally excellent quality 1080p h.264 . . .  but the downsizing of the recent video is terrible - both in 480 and 720p  (much worse by comparison with the video uploaded several months ago).

here is a list of videos that I would request be transcoded again




Re: Pixelation in uploaded videos. Not there with previous uploads. Abraxsis 10/30/10 8:54 AM
Youtube are just constantly downgrading video and audio quality to save money and there certainly not going to fix anything just because a few users are complaining.Just sit back and watch your lovely new pixelated mess of a video with it's dull low bitrate audio and enjoy all the lovely new adverts that are poping up all around it and even in it.
Re: Pixelation in uploaded videos. Not there with previous uploads. gwhguitarist 11/3/10 3:13 PM
Sadly, I'm going to have to switch to Vimeo. I uploaded the same videos that I've been having compression issues with on YouTube to my Vimeo channel and lo and behold, the videos look great on Vimeo. So until YouTube can do something about this problem, I will be using Vimeo.
Re: Pixelation in uploaded videos. Not there with previous uploads. CyclingUlster1 12/15/10 5:27 AM
hi , i never had any pixelation problems either to lately , here is an example http://www.youtube.com/watch?v=3MIDlYj5lG8 
 
the video looked perfect before upload and as has been said above dark backgrounds and the sky seem to be the worst affected areas
Re: Pixelation in uploaded videos. Not there with previous uploads. dcarchidi 12/28/10 1:41 PM
From what I can tell, it is a problem with all the video sites.  I have tried to upload to YouTube, Vimeo, and Wellcomemat.com and the same result with all of them. Badly pixelated.  It has happened since I downloaded the update of Sony Vegas Pro 10.b and it started after this update.  I am going to question Sony about and report back if they say anything.
Re: Pixelation in uploaded videos. Not there with previous uploads. ebbixx 1/3/11 6:44 PM
@dcarhidi  -- I was wondering about that too, since I'm also using Pro 10.b and have been running into more than a few glitches... something common, it seems, for the first few maintenance releases every time Sony releases a new major upgrade.  

Maybe unrelated, but are you also noticing longer processing time in some cases?  Which specific profiles are you using to render in Vegas?  Hoping to hear back and make some time to dig into this on the Sony support sites as well.  (Debating whether I should have stuck with 9 a bit longer, though I do have it installed still on a laptop.)
Re: Pixelation in uploaded videos. Not there with previous uploads. dolphindance 1/4/11 12:40 AM
yet another pixelated video complements of Youtube.  This is so disappointing . . .  every video uploaded since september looks awful - huge pixel patterns in what should be relatively solid areas of color.  

here is the video on youtube - http://www.youtube.com/watch?v=RuOW-dMK5a8

here is the video on Vimeo - http://vimeo.com/18392894

we would rather publicize youtube, but it just doesn't look very good . . .
Re: Pixelation in uploaded videos. Not there with previous uploads. vsx18 1/12/11 4:52 PM
Can somebody answer if YouTube made encoding changes sometime in September or October? Because all WMV files uploaded after that date are pixelated and before September they were not.

I'm using the same render settings as before and there were no pixel problems. So what changed?

I use Sony Vegas Pro 8.0 with the 480 template (4.8 Mbps HD 720-24p Video). I've also tried the 6.0 Mbps  and 8.0 Mbps render template with the same poor quality results.
Re: Pixelation in uploaded videos. Not there with previous uploads. ebbixx 1/12/11 6:59 PM
This thread started in October, and it's not the first one related to perceptions that pixelation (probably a by product of increased compression) underwent a significant increase, especially in certain cases.  It might also be related to the observation that YouTube's transcodings are using a variable framerate, but that's less clear.  Upping your own bit rate is likely to have only limited impact, since this seems clearly to come from YouTube's own transcoding choices and levels of compression.  It's unlikely to change unless YouTube chooses to change it.
Re: Pixelation in uploaded videos. Not there with previous uploads. siperkins7 2/21/11 3:10 PM
All of my videos that I have recently uploaded in high quality have been pixelated.  My earlier videos, which were exported and uploaded with the exact same settings, are not.  This is really frustrating.  I have read all the threads similar to this one, and everyone's issues are exactly what I have been experiencing lately.  But there has to be a way around this problem, even without youtube helping us.  There have been some videos uploaded lately in HD that look great.  So what are these people doing that we aren't?
Re: Pixelation in uploaded videos. Not there with previous uploads. Dunoj 2/24/11 4:38 PM
I have two videos that I uploaded recently and both are pixelated. The first video is a reupload because I finally figured how to make videos appear in 480p rather than 240p. I should also add that the reupload was pixelated in 240p as well. When I look at these vids in Imovie they are fine. However when I view them on YouTube they start with a slight blur and then become pixelated. When I did the original upload of the first vid that appeared in 240p, it was unpixelated. That was either the first or second week of February. I do know that YouTube compresses vids but this is just ridiculous. I have other vids that do not have this issue in the least. Somebody else who has the same camera as I do uploads vids that are clear and have no pixelation. Please resolve this issue as soon as possible and keep us updated. I will provide the URL's here.

This is the reuploaded video: http://www.youtube.com/watch?v=mX8rFh95-wU

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