How do I maintain video size

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I have an MP4 file and am removing about 5 seconds from the middle. What output setting should I choose such the video is saved with the same quality and approximate size (in terms of Mbytes)
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martincregg

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Posted 2 years ago

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kayakman, Champion

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from a practical point, recommend you custom produce to MP4 with controller; set video quality to 70%, H264 to high; keyframes to 1 second; use 30 frames per second

be sure to edit and produce at same dimensions as the original MP4

just curious, but why would it be important that the produced file size be the same as the original MP4?

this tutorial might be helpful ...

http://www.screencast.com/t/HvZdmmhM
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martincregg

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I guess my real question should have been how do I take a video, make a very small edit and save it such that there is no loss of quality and the size does not increase?
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kayakman, Champion

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produce it to AVI [re quality = best as popssible], but file size will probably increase
(Edited)
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Joe Morgan

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Hello there martincregg,

It's nearly impossible to reproduce a video that's already been produced previously without  degradation of quality. Especially when you are talking about an mp4. Mp4's are generally  highly compressed already, there just isn't a lot of head room for further editing left.

That being said. You can still produce a video that's nearly identical in size as the original, with little degradation in most cases.
Here's what you're going to want to do.

Select and right click your video in Windows and select "Properties"
You're going to want to go into details and take note of the "Data Rate, Frame Rate" and "Audio Bit rate".




Edit your video and do a Custom Production to mp4.

 Match the Frame Rate.

Set "Video Quality" to "Bitrate"
Set the Bitrate to match the "Data Rate" of the original video. Not the total bit rate.  

See Image Below, Click to Enlarge



Under audio settings match the kbps


Those settings should yield very good results and the file sizes should be nearly identical.

 It should be difficult for you to tell the difference between the original video and the new one for the most part.Some FX effects will be effected more than others.

If you try this technique, I'd like to here if it worked out for you.

Regards,Joe
(Edited)