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hoops2007  
#1 Posted : Tuesday, July 22, 2014 3:33:23 PM(UTC)
hoops2007

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I am looking to create an event "live on Tape" and ultimately i want to have the event in as close to DVD as possible, so that folks can watch on there own TVs. I will not have the capability to stream on site and I was wondering if there is away to increase the quality of the initial recording.
The streaming of 75 MBPS seems slow.

Is there a way for this speed / quality to be increased or is there a potential work around for this?

Thanks,
Johnny
fordry  
#2 Posted : Friday, July 25, 2014 10:02:07 PM(UTC)
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75Mbps is a lot...

2 hours would be 67.5GB's... That is waaaay more than a dvd or bluray. I am not sure what you think you are lacking.

If you want higher bitrate, maybe try the AVI option (hope you have a big drive...)
lbgaus  
#3 Posted : Saturday, July 26, 2014 12:56:31 AM(UTC)
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I don't think I understand the problem you put forth. It sounds like you might be mistaken about bitrates, either way 75MBps or 75Mbps are both much higher than DVD and even Blu-ray.

If you're looking to create a DVD, the maximum bitrate you'll be using might be around 8Mbps, and even then some players may choke with that much data, so 5Mbps might be a good number for your DVD.
hoops2007  
#4 Posted : Saturday, July 26, 2014 12:46:13 PM(UTC)
hoops2007

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Thanks for the replies.

Let me explain:

I am using the record function with the following configuration:

MP4

Size: 1920X1080
Frame Rate: NTSC 59.94i or 29.97p
Bit Rate: 75
Use Hardware Encoder is checked.

I recorded 20 minutes of video and it was 303 MB.

This to me seems very small.

Is this the correct configuration?

Thanks!
ovinas  
#5 Posted : Saturday, July 26, 2014 1:29:15 PM(UTC)
ovinas

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There's something wrong.
75 mbit/s = 9.375 mbyte/s = 562.5 mbyte/min
562.5 mbyte * 20 min = 11250 mbyte = ~11 gbyte
hoops2007  
#6 Posted : Saturday, July 26, 2014 3:44:32 PM(UTC)
hoops2007

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I am not sure.
The initial email I sent is exactly how i set up the capture.
I have double checked.
Any other advice?
IceStream  
#7 Posted : Saturday, July 26, 2014 5:43:59 PM(UTC)
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@ hoops2007

Please explain in more detail what you are attempting to accomplish and the problem you are having/seeing, as it is unclear if you are Streaming or recording for burning to DVD???
What do you mean by "slow"?
The bottom line is: "how does it look?"
MPEG-2 is DVD ready
MP4 is a more compressed format and will likely have a much smaller file size than the others.
Also important to consider is the nature of the image you are recording. Lots of stuff changing from frame to frame means more data being transmitted, a static image, not so much (that's kind of how compression works, it doesn't save every frame, only the info that changed from the frame before) regardless of the Bit rate (which is really the Max Bit rate target).
As Ibgaus indicates, a DVD's max Bit Rate is usually set under 10 Mbps (8 is common).
It can get very confusing and convoluted dealing with Bit rates, colour space and broadcast standards in today's internet world.
That's why I say the bottom line is;
"How does it look to the end viewer?"


Ice
admin  
#8 Posted : Saturday, July 26, 2014 10:29:31 PM(UTC)
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Hi,

For MP4 recording, I would suggest upgrading to Windows 8/8.1 if possible
as the resulting file will be a lot closer to the selected bit rate as Microsoft has made some improvements in that area.

If you plan on recording to DVD, then it probably makes sense to record to MPEG-2 anyway.

Regards,

Martin
vMix
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