I wonder what bitrate to use for my 4k slideshow to stream to my 4k tv. I render in 4k hevc codec. I do not see major visible difference in files rendered at 7k bps or 40k bps it seems. But filesize is a lot bigger at 40k bps. Is there an optimum bitrate setting to balance quality and filesize for 4k slideshows ?
Hi
. . . . what bitrate to use for my 4k slideshow to stream to my 4k tv. I render in 4k hevc codec. I do not see major visible difference in files rendered at 7k bps or 40k bps it seems. But filesize is a lot bigger at 40k bps. Is there an optimum bitrate setting to balance quality and filesize for 4k slideshows . . . .
Are the figures highlighted correct - do you 7Mbps (7000 kb/s) and 40 Mb/s (4000 kb/s)?
If they are as you quoted these setting would render the video unwatchable.
How are you 'streaming' the video to the TV ie browsing for the file using the TV and playing it, or casting from the PC to the TV?
The recommendation concerning exports and customising them is to always use the default setting for the export preset you are using - these are already optimised for the format and resolution as shown in the 4K HEVC example below
note the bitrate is 35000 kbs (35 Mbs)
John EB
Forum Moderator
Hi John, thanks for your reply. The figures I meant were indeed 7000kb/s and 40000kb/s. I store the video on my NAS drive and stream it from there to my TV. I do not visibly notice a big quality difference in the various bitrate settings but offcourse a huge difference in file size. Your recommendation for using the preset settings is very helpfull. I now consider this setting for my workflow :
It does seem to balance file size and quality. You think this wil be ok ?
Best regards, Hans
Hi Hans
VBR 15000 is a good starting point for video whcih has low detail or slow moving action, however it may be too low in scenes where there is a lot of detail, eg woodland, trees etc, or fast movement/scene changes.
To low a bitrate will show as artefacts or random noise on the video.
HTH
John EB
Hi John, I do save slideshow movies from photostory so these are pictures without movement (perhaps only a little zooming) so there is no issue I believe.
I have to watch closely for resolution issues however because sharp details are essential to me. Standard 4k rendering with high bitrate will more than double the filesize. I guess it is all about compromizing. Thanks again for your help in this. Hans