Should I be trying to crop these types of files to reduce file size?

When a station broadcasts a program in HD 1920 x 1080 I just knock out ads and save or if I'm unlikely to want see it again at it's best resolution I will recode it down to SD 720x576 H264. I'm now starting to see some programs that were shot in 4x3 AR being broadcast in HD.

Are there file size savings to be had if I ask for the recode to have the output set to 4x3 and and encoded in H264. I'm supposing that the black bars on either side might not need to be saved.

If so what is the best way to do this?

Thanks in advance
 

jmc

Active member
When a station broadcasts a program in HD 1920 x 1080 I just knock out ads and save or if I'm unlikely to want see it again at it's best resolution I will recode it down to SD 720x576 H264. I'm now starting to see some programs that were shot in 4x3 AR being broadcast in HD.

Are there file size savings to be had if I ask for the recode to have the output set to 4x3 and and encoded in H264. I'm supposing that the black bars on either side might not need to be saved.
If so what is the best way to do this? Thanks in advance
There is "Cropping and Resizing" in the Output Profile and that can get rid of the black bars.

My experience is that it is almost completely the Bitrate that determines file size.
Same bitrate...
4K-----------64MB
320x240---62MB
 

Dan203

Senior Developer
Staff member
You could save some space by cropping it, but you'll likely lose some compatibility. A lot of hardware players just assume higher resolutions are 16:9 and some will stretch a 1440x1080 to fill the screen rather than display it at the proper 4:3 aspect. Also you'd really only reduce the space requirement by about 25% which in this day and age of super cheap hard drives may not be worth the effort.
 
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