cutting a 960*544 mp4 video with same data rate

[haytham501]

hello I have 960*544 mp4 video
data rate 1800 kbs
29.970 fps
i want to cut a portion of it and put the same data rate but the quality was not good
any suggestions please

[Ken Berry]

i want to cut a portion of it and put the same data rate but the quality was not good

Can you please explain a bit more what you did here? Did you render the video again after you made the cut? If so, how did you render it?

You need to note that 960 x 544 is a rather unusual frame size which Video Studio might have difficulty with. If re-rendering, I would use Share > Create Video File > Same As First Clip if Video Studio will allow it, If not, you would need to make a custom template using the same properties as your video clip (Settings > Make Movie Template Manager).

[haytham501]

thank u for your reply
I made custom then I put same properties as my file especially the data rate which was 2000 kbs (this is what vs allow) but the quality was not the same do I have to increase the data rate in order to have the same quality and if I increase the data rate I will have same quality but higher size

[lata]

Hi

What version of Video Studio are you using.?

If you are creating a Mpeg4 template you will not be able to User Define the frame size, so will not be able to set 960 x 544
However it is using 16:9 ratio so try 1280 x 720

From the Compression tab choose the Video Type to use H264 not M4V-SP
You can then increase the Data Rate which will increase the files size.
First set the Frame Size from the general tab

If you do require 960 x 544, which does seem a strange size then try using QuickTime with the MPEG4 Visual compression?

[haytham501]

how do we use QuickTime with the MPEG4 Visual compression? please

[lata]

Hi

1 / Share Create Video File – Custom – opens the Create Video File window
2 / Save as Type – Choose Quicktime
3 / Pressing Options – opens Video Save Options
4 / Compression Tab – Choose Mpeg4 Visual or any other option you wish to use.
5 / General Tab –user Define the Frame Size
6 / Ok the options window to close
7 / View the details in the Save options panel.
8 / Press Save will convert/render the files.

[haytham501]

sorry again but there is no choice foe quicktime in save as and I have quicktime player on my computer

[lata]

Hi

What version of Video Studio are you using.?

click image for larger view

[haytham501]

i am using vs pro x6

[lata]

Hi

and did you find the Quicktime option from the image I posted earlier

[haytham501]

yes I saw it it seems I is difficult matter
another question
if I have 960*540 mp4 video with 1800 kbs data rate ,I want to convert it to 1280*720 mp4,what data rate shoud I put to keep same quality

[lata]

Hi

The simplest way to test this is to use the Share – Upload to Web – Youtube 16:9
Cancel the upload when render is complete.

That will use a MP4 template 1280 x 720 x 5000kbps. At approx 33Mb per minute

If you wish to reduce the data rate that will impact on quality, Create a template using either the Custom option or Settings make Movie Templates Manager.

[haytham501]

sorry but the problem is why I should put a data rate of 5000 kbs while the source file has 1800 kbs and a 1 minute has below 33mb
I want to have same quality but not a higher size brought from a higher bit rate

[lata]

Hi

Sorry but you did not ask why a higher bit rate but what to use.

You should try the 5000 kbps option, I assume you have already done that.
Compare the quality, then try a lower data rate until you find the optimum settings for your particular video file.

A larger rate is required because different MP4 compression’s use a different rate, you do not give full details of your video files properties.
Also the new frame size is quite a lot larger requiring more data to display the video, but should look better on a larger screen.

Upload to the web will use MP4 H264, there are a few options for H-264 which allow different data rates.
The lowest quality MP4 would be using M4V-SP, there are 6 options available using
Video Studio --- H264_High being the best quality
H264 Main at 1280 x 720 has to use a minimum data rate of 2000.

Another option to retain quality with smaller file sizes may be Div-X, that is a Avi type using higher compressions. I do not know what settings to suggest so you will have to run a few rendering tests to compare quality.

[haytham501]

thank u for yoy assistance and I will use avi divx for rendering because it will put data rate itself