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Exporting File for Digital Projection
Hello,
My film was accepted into a film festival and they are asking me to send a MPEG4 file on a jump drive with very set specifications. I am not sure about everything they are asking for.
BITRATE: CBR (constant) 2850 kbits/s
– I am exporting the movie (67min) using quicktime to a MPEG4 file.
I don’t see bitrate as an option for Video, only data rate. Are these the same thing? And the default is really low. Like 128. Do I change to 2850?MAXIUM RESOLUTION: 960X540
-I don’t see where I would change this information either.Thank you!
Shawna
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2 Replies
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What program are you using to export the video? What is the native resolution of your video?
Bit rate is the same thing as data rate. I suspect the 128 rate you are looking at is actually the audio rate – totally different from the entire video’s rate.
In compressor you should be able to find the MPEG4 setting, which is under formats. Click on the inspector window, > encoder > video tab to see the settings, I just looked at it and it appears the highest the bit rate can go with that setting is 2048 kbps. You can click on the geometry tab to find the resolution and size.
If you use MPEG Streamclip, you can choose mpeg4 and enter 2850 kbps. You can also custom change the resolution in there. Just make sure you import the uncompressed version of your film into both Compressor and MPEG Streamclip if that is what you are doing.
Did they have any specification for audio?
I would also test it all out before you send it to the festival, just in case.
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Hi Shawna,
2.850Kbps is a very good data rate for a 960×540 movie.
I also recommend you use MPGStreamclip.
Use the “Export to MP4” option and set 100% quality, Multipass and B-frames.
Then the data rate that you need for your audio and video.
The required size. Be careful about the interlacing.
Rafael
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