why would a 8 minute mp4 video be almost 2GB?

**hobbs** · July 14th, 2017, 08:43 PM

I downloaded a 8.5 minute mp4 video that's 1.93GB.
It's 1920x1080 but for that running time I would not expect more than maybe 500-600 MB file size
The data rate is unusually high, 31944kbps total bitrate 32133kbps.
It plays OK with VideoLan.
Any idea why the the data rate and file size would be so large?

**cicciobuki** · July 14th, 2017, 09:34 PM

2 things come to mind...

It's possible that something went wrong and a larger chunk of the video is not playable? Does the video stop rather abruptly? (like it is supposed to be much longer)
I've had incomplete downloads ending up 90% of the file but only playing 20% of it.

Another possibility is bad encoding (i once tried a few times to edit and resize video's - which i apparantly sucked at - and i ended up with cutting a clip from let's say a 1 hour 1 GB video into a 5 minute clip which ended up almost 1 GB large... And even ending up with poor video quality. :/

**hobbs** · July 14th, 2017, 10:49 PM

the file plays fine and does not cut off or show any problem during playback.

My guess is that it's been converted from a file that was originally meant to play on UHQ or 4K. I think it was converted and "downscaled" to play on a 1080 monitor but if so, I'd expect the file size to shrink accordingly. I doubt that there is any visual benefit to that high a data rate on a 1080P monitor.

Could it have something to do with compression or lack thereof?

Shylock · July 15th, 2017, 11:55 AM

Most likely has a very high bit rate and high quality audio setting when it was ripped or encoded.

**rayman** · July 16th, 2017, 10:35 AM

Yes most likely that insane bitrate. I have successfully used the free Video to Video (Media Converters) to re-encode video files to mp4 for use on my android phone. Reducing the bitrate sometimes resulted in a new file of only 1/3 the original.

**pizzapie** · July 22nd, 2017, 11:31 PM

As you said, the file shouldn't be bigger than 600 MBs. Maybe it's just me being cynical, but the uploader might just be a prick and purposely made the file bigger to get you to try to pay for a premium account to download the file.

July 14th, 2017, 08:43 PM	#1
hobbs Vintage Member Join Date: Aug 2008 Posts: 659 Thanks: 4,197 Thanked 21,343 Times in 603 Posts	why would a 8 minute mp4 video be almost 2GB? I downloaded a 8.5 minute mp4 video that's 1.93GB. It's 1920x1080 but for that running time I would not expect more than maybe 500-600 MB file size The data rate is unusually high, 31944kbps total bitrate 32133kbps. It plays OK with VideoLan. Any idea why the the data rate and file size would be so large? __________________ To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. My signature picture is the beautiful and all too rarely seen Celine Devoux. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

July 14th, 2017, 10:49 PM	#3
hobbs Vintage Member Join Date: Aug 2008 Posts: 659 Thanks: 4,197 Thanked 21,343 Times in 603 Posts	the file plays fine and does not cut off or show any problem during playback. My guess is that it's been converted from a file that was originally meant to play on UHQ or 4K. I think it was converted and "downscaled" to play on a 1080 monitor but if so, I'd expect the file size to shrink accordingly. I doubt that there is any visual benefit to that high a data rate on a 1080P monitor. Could it have something to do with compression or lack thereof? __________________ To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. My signature picture is the beautiful and all too rarely seen Celine Devoux. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

July 16th, 2017, 10:35 AM	#5
rayman Vintage Member Join Date: Apr 2010 Posts: 420 Thanks: 9,369 Thanked 26,351 Times in 419 Posts	Yes most likely that insane bitrate. I have successfully used the free Video to Video (Media Converters) to re-encode video files to mp4 for use on my android phone. Reducing the bitrate sometimes resulted in a new file of only 1/3 the original. __________________ Don't repost links on other sites. Kudos to the member that rehosted their posts during the Imagebam troubles To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

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July 14th, 2017, 09:34 PM	#2
cicciobuki supermoderateur Join Date: Aug 2011 Location: Belgium Posts: 24,366 Thanks: 157,817 Thanked 321,232 Times in 24,281 Posts	2 things come to mind... It's possible that something went wrong and a larger chunk of the video is not playable? Does the video stop rather abruptly? (like it is supposed to be much longer) I've had incomplete downloads ending up 90% of the file but only playing 20% of it. Another possibility is bad encoding (i once tried a few times to edit and resize video's - which i apparantly sucked at - and i ended up with cutting a clip from let's say a 1 hour 1 GB video into a 5 minute clip which ended up almost 1 GB large... And even ending up with poor video quality. :/

July 15th, 2017, 11:55 AM	#4
Shylock Member Join Date: Jun 2007 Posts: 54 Thanks: 5 Thanked 313 Times in 51 Posts	Most likely has a very high bit rate and high quality audio setting when it was ripped or encoded.

July 22nd, 2017, 11:31 PM	#6
pizzapie Vintage Member Join Date: Sep 2016 Location: North America Posts: 1,293 Thanks: 1,758 Thanked 53,788 Times in 1,282 Posts	As you said, the file shouldn't be bigger than 600 MBs. Maybe it's just me being cynical, but the uploader might just be a prick and purposely made the file bigger to get you to try to pay for a premium account to download the file.