View Full Version : Youtube question.
Blizzardstar
19th March 2007, 06:56
Hello, sorry about asking, but I made a video with xvid and an average bitrate of over 5000 and it looked good, however when I posted it in Youtube it looks like this... block mess. Did I do something wrong? Or is Youtube at fault?
My sound source is currently bad so the bad sound is normal, however the file in my PC looks good, but I got scared after watching the drastic (even that word doesn't seems to cut it) fall in quality.
I record video games, and this title in particular where a high bitrate seems to be needed seems to be one of most problematic ones in Youtube.
http://www.youtube.com/watch?v=3kjoeaz2wPg
CWR03
19th March 2007, 07:13
Looks normal for a Youtube video. They don't post them as they receive them, otherwise people with slower bandwidths would have to wait forever to view them. It sounds like hell, and that is your fault for capturing the audio too loud.
foxyshadis
19th March 2007, 07:32
Youtube always re-encodes to their pitiful standards, yes, 320x240 225kbps with 1-pass. Google video is somewhat better quality, and offers a full download of the original source on the sidebar, so that might be a better choice. Otherwise you're going to have to host your own files.
Blizzardstar
19th March 2007, 16:21
LOL, the thing is, other videos I can post without getting too crappified.
Example: http://www.youtube.com/watch?v=O-EyhK8BDHk
It's Youtube quality, but it doesn't has those horrible blocks.
Would the more similar to their encoding the less blocking it would result?
Also which do you recommend for hosting myself?
Sorry for a new batch of questions...
CWR03
19th March 2007, 16:35
The difference between the two is the amount of motion. They re-encode them at a fixed bitrate, so the more motion within them the more "blocky" it becomes. As far as hosting yourself, ask your potential viewers what bandwidth they can handle and try not to exceed that.
Blizzardstar
19th March 2007, 16:57
So there's no hope for high motion in Youtube? At all? :confused: I thought x264 would help but it doesn't seems so... Is there anything?
And you mean hosting myself like in streaming? I thought it was more like posting files in FileFront or something. But I don't know much about those.
FishTank
19th March 2007, 22:52
google is terrible..
i uploaded a vid that looked great. 18mb in filesize (xvid).
their version was 30mb and looked like crap. they re-encoded
it to divx. <.<
KoD
20th March 2007, 09:18
Blizzardstar, transcoding degrades quality. And they transcode everything you upload. Doesn't matter that you upload a 1GB h264 video file, they'll transcode it to a 10 MB SVQ3 or VP6 file. That's it. Miracles don't happen.
foxyshadis
20th March 2007, 10:56
Not VP6, we'd be so lucky. Spark is h.263, which is like mpeg-4 SP (not ASP) with b-frames. VP6 or SVQ3 would both be somewhat nicer. Basically ever video upload site will use it, since they're all too cheap to buy On2's codec. I think google uses a higher bitrate than youtube, but that might not be the case anymore. (But, like I said, they do make your original available - if you're sneaky you can link directly to it from your site.)
Can you believe google used to transcode it with x264 and had an awesome progressive download player? Those were the days. ;_;
Blizzardstar
20th March 2007, 16:05
So that's it? There nothing? The next step would be adds before every video in Youtube?
FishTank
20th March 2007, 20:11
if you wanna download a google vid, just click on "download manually", then download the .gvp file. open it with notepad.
the url to the .avi file is in there :)
Blizzardstar
22nd March 2007, 04:46
But Youtube is more popular. I don't care about making vids for myself, only those I can show to others, and since Youtube is so popular, that why this whole thing sucks >_<
...so even if I would make it look good with around 200 in bitrate it wouldn't matter because Youtube's codec(which isn't really good at bitrates) would make it look bad again?
CWR03
22nd March 2007, 08:11
...so even if I would make it look good with around 200 in bitrate it wouldn't matter because Youtube's codec(which isn't really good at bitrates) would make it look bad again?
Asked and answered three times counting this one. Yes, they always re-encode to suit their parameters, so yes, whatever you upload is at the mercy of their allowable video bandwidth.
Blizzardstar
22nd March 2007, 23:17
Wow, FileFront is so cool. I apologize for all my useless babbling.
And sorry about asking it 3 times, but I just didn't understand it until the last time. Too newb. :thanks:
nix0
23rd March 2007, 17:35
Asked and answered three times counting this one. Yes, they always re-encode to suit their parameters, so yes, whatever you upload is at the mercy of their allowable video bandwidth.
Though, as they will use a single pass reencoding, surely ensuring you do a multi pass low bandwidth version to upload should mean bits are used as best as possible and youtube have less to throw away in the 1-pass
bond
24th March 2007, 16:46
So that's it? There nothing? The next step would be adds before every video in Youtube?what you can do is to provide youtube a source that has a very good quality. this will increase the quality of the video posted on youtube too
mgh
25th March 2007, 14:09
IMHO the best you can do
1 Resolution 320x240
2 If you use avisynth, mvdegrain2 to remove noise
3 If you use virtualdub, the neat video demo plugin(30 mins limit, no logo added at above resolution) to remove noise
4. encode to divx or xvid with kbps 500 or higher or quantizer 4 or less.
Blue_MiSfit
25th March 2007, 22:48
I generally upload 320x240, CQ3 XviD AVIs, with CBR MP3 Audio @ 160Kbps...
Makes the clips larger, but they usually come out watchable...
Bleh.
PlazzTT
21st April 2007, 22:21
This info is probably available elsewhere, but thought it might be handy.
I had noticed the quality of videos on Dailymotion.com seemed much higher than on YouTube.
I downloaded a video off both sites, and used FLVExtract to extract the video and audio from both.
The info:
Dailymotion:
Video: Flash VP6, 640x480, ~25fps, ~428kbps
Audio: MP3, 96Kbps CBR, 44100Hz, Stereo
YouTube:
Video: Flash Sorenson Spark H.263, 320x240, ~24fps, ~249kbps
Audio: MP3, 64Kbps VBR, 22050Hz, Mono
mgh
22nd April 2007, 05:51
youtube flvs look better if you use flv splitter and ffdshow codec with post processing. I also enable perspective and denoise.
PlazzTT
22nd April 2007, 10:46
DivShare started streaming Flash videos recently too.
The specs:
DivShare:
Video: Flash Sorenson H.263, 560x420, ~848kbps
Audio: MP3, 56k CBR, 22050Hz, Mono
So going on the video and audio encoding, quality wise:
Dailymotion > DivShare > Youtube
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