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Bitrate drops

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Mohannad Mahmoud
Bitrate drops
on Nov 9, 2012 at 2:28:13 pm

Hello Everyone,

I am facing an issue when exporting into a quicktime file. Everything worked well in the past months, but now when I export into a quick time file using the same settings I used, which are, MPEG-4 codec and bitrate 8400kbps and taking the quality highest, the final video turns out to 5000kbps. I also tried to export via Compressor, but the same result; the bitrate drops

Any ideas on that guys?

Appreciate it


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Rafael Amador
Re: Bitrate drops
on Nov 9, 2012 at 4:40:11 pm

If you are making a multipass and Key-frames . AUTO, that's normal and is OK.
Do the picture looks bad?
rafael

http://www.nagavideo.com


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Mohannad Mahmoud
Re: Bitrate drops
on Nov 9, 2012 at 4:56:04 pm

Thanks for Rafael,

Yes the pic quality dropped and I am required to have it in a certain kbps. I tried in another codec, it did not drop the bitrate, the final outcome was as I set the bitrate to be.

Do you know if there is any option that has created a limit on the mpeg4 codec?

thanks again


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Rafael Amador
Re: Bitrate drops
on Nov 10, 2012 at 12:47:55 am

You can make the MP4 containing H264, which will yield better quality.
- Go to the top of the window (Video tab) and select File Format > MP4 (No ISMA).
- In Video Format. select H264.
- Set the data rate you wan't and Current size (if you don't want rescaling)
- Set Key-frames > Automatic
- Click Video Options and select Main profile and Multi-pass.
rafael

http://www.nagavideo.com


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