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Does file size affect load speed in youtube?

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Justin Crowell
Does file size affect load speed in youtube?
on Aug 9, 2012 at 4:13:39 am

Hi everybody,
Can't seem to find anything definitive around the internet. I tend to compress my 5 minute videos for youtube in the 75% quality range (h.264, of course). I could probably go lower without noticeable artifacts, but my question is: is there any benefit to a smaller file size for youtube? Will it improve the speed at which it loads, or is it re-encoded anyway (on the HD level) using a specific bit-rate?

Video editor, animator, composer, producer
JustinCrowell.com


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David Eaks
Re: Does file size affect load speed in youtube?
on Aug 9, 2012 at 5:34:35 am

I think YouTube reencodes everything, if so you want to give YouTube the best quality video to start with that you can (within YouTube spec). But what do I know?


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Justin Crowell
Re: Does file size affect load speed in youtube?
on Aug 10, 2012 at 1:37:32 am

Right...I read that, but that doesn't explicitly explain what they do with the files, whether they re-encode or not. Is the higher bit rate for people with an audience that will view the files over enterprise connections, or just those who are able to upload such large files?

Using MPEG streamclip, I'm also limited to a basic quality slider, so understanding whether a large file (which presumably is higher bitrate) will affect playback is really important for me.

Basically, what I'm asking is: what does the suggested bitrate mean, and how does bitrate really affect youtube playback?

Video editor, animator, composer, producer
JustinCrowell.com


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Justin Crowell
Re: Does file size affect load speed in youtube?
on Aug 10, 2012 at 2:35:23 am

Pardon me, just realized I can set a bitrate in MPEG Streamclip...still have no idea how youtube actually treats the video, though...

Video editor, animator, composer, producer
JustinCrowell.com


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Craig Seeman
Re: Does file size affect load speed in youtube?
on Aug 10, 2012 at 2:41:26 am

[Justin Crowell] "but that doesn't explicitly explain what they do with the files"

http://www.streamingmedia.com/Articles/Editorial/Featured-Articles/Encoding...



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Justin Crowell
Re: Does file size affect load speed in youtube?
on Aug 10, 2012 at 6:12:54 am

Now THAT is exactly what I'm looking for! Any chance you know of something similar for vimeo?

Video editor, animator, composer, producer
JustinCrowell.com


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