Youtube settings

[ajp_anton]

What settings does Youtube use for its encoding?
I'd like to "simulate" a Youtube upload on my computer and tweak my filtering so that the final result (on Youtube) looks the best possible.

[Mounir]

wmv9 work great for youtube

[Sharktooth]

Mounir, youtube doesnt use WMV9 at all and IMHO WMV9 sux...

[LoRd_MuldeR]

Well, Youtube will re-encode your video anyway.

So it doesn't matter much which format you upload, as long as Youtube can handle it. And as log as you don't loose too much quality already before the obligatory re-encode.

But I think ajp_anton's question was more about the software/settings Youtube will use to re-encode the uploaded video, so that this process can be simulated locally...

(As far as I know, they use x264 to encode H.264, at least for the "720p" and "1080p" versions of the video. For the "SD" versions they probably use On2's VP6 encoder !?)

[IgorC]

For your information youtube has never used VP6. Never. SD is H.264

[LoRd_MuldeR]

For your information youtube has never used VP6. Never. SD is H.264

Are you sure about this? H.264 needs FlashPlayer 9.0 (Update 3) or newer. Maybe you mean that Sorenson Codec (which is a H.263 rip-off) ???

[IgorC]

When I tell something I know it for sure (in difference from other posters). And when I mean H.264 it's H.264 not H.263. H.263 was used some time ago.

[ajp_anton]

But I think ajp_anton's question was more about the software/settings Youtube will use to re-encode the uploaded video, so that this process can be simulated locally...

(As far as I know, they use x264 to encode H.264, at least for the "720p" and "1080p" versions of the video. For the "SD" versions they probably use On2's VP6 encoder !?)
Yes, I want to simulate the Youtube re-encode on my computer to tweak my Avisynth settings so YT's encoder will make it look good.

And I'm most interested in the 480p version (still h264) as that's what my videos are.

[LoRd_MuldeR]

When I tell something I know it for sure (in difference from other posters). And when I mean H.264 it's H.264 not H.263. H.263 was used some time ago.

So you must be the only person on earth who never might happen to make a typo ;)

Anyway, this info is from a Youtube video received only minutes ago:
http://pastie.org/private/kchfpqjcpo5lnsvcwp4eg

If they now use H.264 even for SD clips, they obviously don't use it exclusively.

[IgorC]

Lord Mulder,
You are liar and put the words in my mouth that were never said.

1. First of all, we were talking about SD videos. Check previous your and my post. You link to http://pastie.org/private/kchfpqjcpo5lnsvcwp4eg is not SD but low resolution 240p youtube video.
2. I've put it clear that H.263 was used before. So it's logical to see old videos encoded with it.

P.S. And, please, keep your winky smile icons to msn chat with cheap fat girls. Seriously?

[Mounir]

wmv9 (720p) work best for me or x264 (mediacoder) but with not many b frames and baseline/main profile (for not complex decoding) bitrate 9000 and up to 12000 for 720p = big file but that's the price to pay.

[LoRd_MuldeR]

Lord Mulder,
You are liar and put the words in my mouth that were never said.P.S. And, please, keep your winky smile icons to msn chat with cheap fat girls. Seriously?

Even with 1000+ posts I still have to remind you to respect the forum rules (especially #4).

1. First of all, we were talking about SD videos. Check previous your and my post. You link to http://pastie.org/private/kchfpqjcpo5lnsvcwp4eg is not SD but low resolution 240p youtube video.

There is no exact and all-embracing definition of "HD" and "SD". Often "720p" and above is considered "HD" and everything below is considered "SD".

If you want to start hairsplitting, you must at least mention what exact definition you are using...

2. I've put it clear that H.263 was used before. So it's logical to see old videos encoded with it.

As I can watch videos uploaded to Youtube only a few minutes ago with Flash Player 8.0 (on my Win2k machine), they still create one H.263 version for each video at least...

[IgorC]

There is no exact and all-embracing definition of "HD" and "SD". Often "720p" and above is considered "HD" and everything below is considered "SD".

Simply not true. SD is applicable for 480p and 360p. 320x240 is QVGA. That's quarter of VGA. It's not SD.


As I can watch videos uploaded to Youtube only a few minutes ago with Flash Player 8.0 (on my Win2k machine), they still create one H.263 version for each video at least...
Again. H.263 is only for low resolution 320x240. Not for SD.
My statement was for SD. And SD videos encoded to H.264.

[weasel_]

Often "720p" and above is considered "HD" and everything below is considered "SD".



Wrong.
There is bigger resolution then hd ( not in widely used but there is so not all >720p is hd )
and same as that not all <720p is sd

[ajp_anton]

wmv9 (720p) work best for me or x264 (mediacoder) but with not many b frames and baseline/main profile (for not complex decoding) bitrate 9000 and up to 12000 for 720p = big file but that's the price to pay.You're saying Youtube uses wmv9, or x264 at 9-12Mbits?
Try again, read the first post.