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1. Re: Exporting MJPEG Correctly
Stan Jones Jun 10, 2010 3:10 PM (in response to frogmike)What pixel size, par, and framerate are you exporting? And same for the mjpeg that is your source?
Most of my other thoughts are dependent on the first question.
Have you looked at the vimeo recommendations?
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2. Re: Exporting MJPEG Correctly
frogmike Jun 10, 2010 3:44 PM (in response to Stan Jones)1280x720, 24.00fps,data bitrate 39636 kbps
a 20 second clip is 29mb big,
This is the source
I export to the same framerate, same frame size, square pixels, and try to keep the bit rate around 6.5 mbps
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3. Re: Exporting MJPEG Correctly
Stan Jones Jun 10, 2010 4:51 PM (in response to frogmike)That should work. But scenes with motion may be a problem.
I suggest using a short bit (10-15 seconds) including some of what you have found is the most difficult, and follow the vimeo recommendations: mp4, h264, aac, 5000kbps (6500 is also probably okay), etc.
Upload it and post the link. Others may be able to comment on how it compares to similar footage.
I don't know if the mjpeg requires any special handling, (e.g. field order), but it is probably no fields/deinterlaced you are exporting?
You comment on the mjeg, and it makes me wonder about any problems you have just not resolved in using the mjpeg/morgan.
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4. Re: Exporting MJPEG Correctly
frogmike Jun 10, 2010 5:02 PM (in response to Stan Jones)The footage is progressive so nothing with interlacing.
So I should use H264 wrapper, and what codec? What quality settings? The footage is only 3 minutes long so It shouldn't exceed 250mb preferably.
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5. Re: Exporting MJPEG Correctly
Stan Jones Jun 10, 2010 5:20 PM (in response to frogmike)Look at these again; they should answer all your questions.
http://www.vimeo.com/help/compression
The wrapper is mp4, but it is called H.264 about as much. H.264 is the codec. Quality is really datarate. Remember mbps is not Mbps. Vimeo is suggesting 5000 mbps (5Mbps). I would start with CBR 5, but we know you have motion problems, so I would expect to end up with VBR. There are a lot of choices; record all of what you have, but take the default if Vimeo doesn't specify otherwise.
Then lets see what you have.
Someone may offer their formula.
I would also be posting on the Vimeo forums, asking what settings other D90 users are using for mjpeg footage.
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6. Re: Exporting MJPEG Correctly
frogmike Jun 11, 2010 1:41 PM (in response to Stan Jones)Is it possible that I'm expecting too much out of the final package size? 3 minutes of 720p footage to be 150ish mb, does that sound right?
I decided to abandon Vimeo unfortunately, because even embedding the video into another site meant you couldn't watch it in HD. I also decided to export to FLV\F4V with H264 Codec. The quality turns out great (not 100% but close) and is only 200mb in size. (Won't mention that Vimeo also doesn't take Flash formats, so I went with Youtube)


