-
11Gb Render for a 2 Minute Clip?
I am trying (every possible combination) to render a 1:45 minute HD clip (1280×720) into a web-usable file size and I am coming up with file sizes that are just plain crazy. The clip was created in Vegas PRO9 and I have tried a variety of exports. The first was WMV11 HD – 6Mbps which looks great – but doesn’t seem to easily be converted into any other format (such as FLV which is my ultimate goal).
So I tried the Main Concept AAC (h264) and it puts out a great file size but the quality is so-so and when I do the FLV conversion the file comes out 4 times larger. I would stick with the mp4 – but once again, I want streaming FLV on my site unless I can find a good solution that is fast and streams mp4 without forcing users to go download a codec. I really want to host some of my own stuff and not turn everything over to outside hosting..
So I figured I would export my clip to Quicktime HD 1280×720 so that I could convert it to something usable and instead, I get a file that is 11Gb in size. Am I missing something? What on earth could I be doing that would great and 11Gb file for 2 minutes of video? I’ve tried to figure it out for months now. I’m totally stumped.
I have guys sending me HD video reduced to 640×360 and it looks fantastic and is only 6mb in size. I can’t figure it out after months of test renders and so many render options I forget what I’m doing half the time. I’m going nuts.
-
5 Replies
-
I would use the Sony AVC codec with the Internet 16:9 HD 30p template. You’ll get a high quality at a low bit-rate file and no need to convert to FLV as most FLV players will simply play this format. If the file size is too big, lower the bit-rate. It uses 6Mbps by default but I’ve encoded at 3Mbps with great results.
BTW, it shouldn’t matter what the file size coming out of Vegas Pro is if you are going to convert to FLV. The file size is controlled by the FLV converter at that point. The 6Mbps file from the Sony AVC encoder should convert to FLV very nicely.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
I really do appreciate the quick answer. Please, if you could, indulge me a little. What am I doing wrong that creates those obscenely huge renders with QT? I thought 8Gb per hour was a good average. Where does 5.4 Gb per minute come from?
-
Please, if you could, indulge me a little. What am I doing wrong that creates those obscenely huge renders with QT? I thought 8Gb per hour was a good average. Where does 5.4 Gb per minute come from?
Quicktime is just a file format. A container to place video in. The size is determined by the codec that the video uses just like with AVI files. If you used the default Quicktime template it would have created a 32-bit uncompressed file which is huge. HDV is 13GB per hour just as an example. If you are rendering Quicktime for the web you want to use a highly compressed codec like H.264 (which you can’t do from within Vegas).
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Thank you once again. “HDV is 13 GB per hour” I guess this is why I am so confused. I came up with 11 GB in 2 Minutes.
-
I have been trying to render so as to make a web flash file.
I had to use wmv no bigger than 6mbps 720p, then encode to flash at 400. works fine.
Any larger files had heaps of trouble with the flash encoding.
Reply to this Discussion! Login or Sign Up