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Well that's going to depend on how you tell the compressor to do its job, and the content of the video. If you tell the compressor to use 24 MBPS for your 720p footage, you end up with a file the same size . If your frame size is smaller, you can usually turn down that 24 MBPS to something equally smaller and get the same quality level.
Don't conflate them, because you'll be off by a factor of 8. The math then is: 704 × 576 pixels × 3 bytes per pixel × 30 frames per second ÷ (1024 × 1024 bytes per megabyte) ≅ 34.8 MB/s = 278.4 Mb/s. Total data = 34.8 MB/s × 60 seconds per minute × 90 minutes ÷ (1024 megabytes per gigabyte) ≅ 183.5 GB. (Note: Most applications ...
If you calculate the video size of a 1 hour with the above bit rate, you'd get: 10.125(Mbps) * 3600(s) / 8(bit per Byte) / 1024(MB per GB) = 4.449GB. ... which doesn't seems right at all. From daily experience, we know that a 1 hour long 720p H.264 mp4 is probably around 1 GB or less. The difference is almost a factor of 5.
I'm looking for an order of magnitude estimate for expected on-disk file size for 1 hour of H.264 encoded HD video transcoded from HDV (HD on a MiniDV tape). I want to archive approximately 100 hours of such content and want to figure out whether I'm looking at a big hard drive, a multi-drive unit like a Drobo, or an enterprise-level storage ...
i.e. converting from m2v/ac3 or mpg to DVD structure. The 7.03% is based on the size difference between a m2v file and the VOB file size. This % will vary - better to be safe than sorry. 2. Calculate Bitrate. enter desired File Size in MB. enter Audio bitrate. enter Duration in Minutes. Click get VideoBitrate.
1. If the average bitrate is in bits per second (I think it is?), then you can get the "size per minute" like this: sizePerMin = 60 * avgBitRate. Which will be the size per minute in bits. You can do similar for the max and min size per minute. answered Mar 30, 2012 at 4:54. joshuahealy. 3,569 23 29. thanks,but some videos,we get the max and ...
Resulting in a required CRF22.3/slow to reduce a original file in h264/crf18/slow from 3500MB to 2000MB. Final thoughts. It is worth noting that the exponential ratio of 12.85% between CRF and file size seems adequate ONLY when all other flags are the same. Changing other flags like present and maxrate can drastically influence the file size.
Reduce video to pre-determined file size using Windows 10, cmd and ffmpeg. Use H.264 and Two-Pass encoding. Calculate your bitrate using bitrate = target file size / duration. Target file size in kilobits. Duration in seconds. 1 MB = 8192kb. Split the bitrate between video and audio, about 3/4 video, 1/4 audio.
I don't a program to tell me the file size. I have a preset value based on the media I plan to use in mind. What I'm looking for is optimal resolution dimensions based on file size (and hence video bitrate based on video duration) and audio bitrate I plan on using.
import 'dart:io'; //Here's the method to get file size: double getFileSize(File file){ int sizeInBytes = file.lengthSync(); double sizeInMb = sizeInBytes / (1024 * 1024); return sizeInMb; } //Alternatively for extension: extension FileUtils on File { get size { int sizeInBytes = this.lengthSync(); double sizeInMb = sizeInBytes / (1024 * 1024 ...