I found this thread while looking at av1 parameters.. https://stackoverflow.com/questions/41372045/vp9-encoding-limited-to-4-threa... ==== Apparently since ffmpeg 3.3/libvpx 1.6.2, there is now support -row-mt=1 option which provides better encoding parallelization and more than 4 threads for 1080p content. Threadripper guys go nuts! - groups.google.com/a/webmproject.org/forum/#!topic/codec-devel/… – Programster Oct 29 '17 at 10:15 === As some people in comments and below have already commented, more recent versions of libvpx support -row-mt 1 to enable tile row multi-threading. === we use libvpx 1.8.2 / ffmpeg 4.3 so it should be applicable to us can anyone test few vp9 profiles modified with this parameter? (on high-cpu machines)
I set the row-mt=1 parameter in the options workbench window. The rendering fps went from 24 to 31; the CPU occupancy from 20 to 30% and the T from 69 to 75°C. PS (OT): the proxy path patch either doesn't work or I don't know how to make it work. What should I do?
On Friday, August 6, 2021, Andrea paz <[email protected]> wrote:
I set the row-mt=1 parameter in the options workbench window. The rendering fps went from 24 to 31; the CPU occupancy from 20 to 30% and the T from 69 to 75°C.
good... what about quality/filesize? may be we can make this default if those parameters are good..
PS (OT): the proxy path patch either doesn't work or I don't know how to make it work. What should I do?
in theory you should do nothing, just *. proxy files will be created in folder named like medianame_/Proxy/, for file mediname, not alongside mediname as it does without patch..
Andrea,
PS (OT): the proxy path patch either doesn't work or I don't know how to make it work. What should I do?
Instead of choosing ffmpeg as the file format, you have to switch to "jpeg sequence" or "gif sequence" or "png sequence", etc. But once you have created these proxy files, the next time you load, it has to create them again. The patch is a good "proof of concept" but I think the idea will be too confusing to the users. Before the patch, all proxy files are created in the home directory of the loaded video and it gets messy with so many jpg files.
participants (3)
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Andrea paz -
Andrew Randrianasulu -
Phyllis Smith