Comments on: A Deep Dive Into YouTube FLV Video

By: Akupunktur

Akupunktur — Wed, 16 Dec 2009 13:31:36 +0000

Was a very good expression. Pictures are very clear and beautiful. thank you.

By: senao

senao — Tue, 01 Dec 2009 09:34:25 +0000

thanks Iâ€™ve been developing a flv player that will play directly youtube videos, so your article was quite helpful for

By: poliÃ¼retan merdane kaplama

poliÃ¼retan merdane kaplama — Sun, 22 Nov 2009 00:08:16 +0000

Thanks Iâ€™ve been developing a flv player that will play directly youtube videos, so your article was quite helpful for me. I wish you continued success.

By: medyum

medyum — Wed, 14 Oct 2009 07:41:41 +0000

good text thank you

By: iÃ§ mimarlÄ±k

iÃ§ mimarlÄ±k — Mon, 05 Oct 2009 10:02:02 +0000

thanks for article and share iÃ§ mimarlÄ±k

By: TÃ¼l Perde

TÃ¼l Perde — Wed, 23 Sep 2009 15:08:53 +0000

Thanks Iâ€™ve been developing a flv player that will play directly youtube videos, so your article was quite helpful for me:)

By: FLV Player Download

FLV Player Download — Fri, 29 May 2009 09:47:29 +0000

Thank you very much for this useful post……..

By: perde

perde — Sun, 22 Feb 2009 23:42:12 +0000

Thanks I’ve been developing a flv player that will play directly youtube videos, so your article was quite helpful for me:)

I will be referencing your article from my web site.

Thanks again.

By: perde, perdeci

perde, perdeci — Mon, 05 Jan 2009 14:30:36 +0000

thanks

By: Perde

Perde — Sun, 04 Jan 2009 19:33:56 +0000

Interesting. Curious if i can get the same using ffmpeg.

By: plastik kart

plastik kart — Sat, 03 Jan 2009 22:11:35 +0000

Hey I just stumbled upon this post. Why would Youtube use Metadata and not just cuePoints?

By: And He Blogs » links for 2008-03-29

And He Blogs » links for 2008-03-29 — Sat, 29 Mar 2008 18:30:58 +0000

[...] Brooks Andrus Â» Blog Archive Â» A Deep Dive Into YouTube FLV Video (tags: youtube flv video flash) [...]

By: idleboy

idleboy — Thu, 13 Mar 2008 15:34:36 +0000

that gr8 post and sue full information

thanks

By: Stephan

Stephan — Wed, 06 Feb 2008 14:43:44 +0000

Hey I just stumbled upon this post. Why would Youtube use Metadata and not just cuePoints?

By: Ozgur Uksal

Ozgur Uksal — Tue, 29 Jan 2008 23:00:21 +0000

I used to wonder about how youtube plays flvs in a good quality. I am impressed about the way you discovered things about youtube flvs. Thank you for sharing your ideas.

By: perde

perde — Thu, 20 Sep 2007 12:48:40 +0000

good text thank you

By: Jaime Macias

Jaime Macias — Fri, 31 Aug 2007 16:51:13 +0000

The interesting thing would be to know what Rouxbe.com is using. They have the best looking FLVs Ive seen.

By: James L

James L — Fri, 27 Jul 2007 15:11:40 +0000

A great writeup on your findings. I’ll have to take a look at flvtool2 and see how our internally encoded video differs from our outsourced stuff.

@Tim
You seem to have gone off the deep end, m’friend. There was absolutely nothing in the post to spark your beginning comments. Looking at the metadata through the lense of objectivity would lead me to think that a social video portal owned by google might have hooks built into it to trigger advertisements. Google does make most of its revenue through ads, and there isn’t anything wrong about it.

By: Timbob

Timbob — Fri, 27 Jul 2007 14:16:00 +0000

Interesting, but in the future it’d be cool to be more objective with your analysis instead of just assuming stuff. Saying the keyframe time “could” be used for advertising hooks may technically be true, but it’s like me saying your website “could” be used for porn advertisement or scamming (after all, they use HTML for that, don’t they? And this site also uses HTML).

Don’t get me wrong, it’s a nice look at the flv format, but this is the kind of stuff that will have people typically spamming “omg look youtube has video advertisement features! that’s it I’m moving to *random_video_website*!!” if they don’t read the article carefully.

Since the frame time is also associated to frame byte count, that metadata is probably used to make the seeking bar more accurate; if you have a flv file with a varying data rate (for example, if there’s a video with some static white text on black background, followed by full-motion video) the time position/duration isn’t equivalent to loaded/total bytes – 50% of the bytes isn’t necessarily half the video time – so you’d need data like that to find out how much of the video was loaded in *time*.