Topic: Exponential output dropped frames in mpv when speed > 1.0x (SVP active

Hello everyone,
I'm experiencing a performance issue with the integrated mpv on SVP that hasn't occurred before. Recently, any increase in playback speed (even just 1.1x) causes the Dropped Frames counter to rise exponentially.

In the past, I was able to achieve speeds up to 1.8x without any frame drops on the same hardware.

I was testing some "mpv.conf" files to copy and paste and ended up not backing up what I was using. I don't know which command line is sorely missed, because as I said, I was able to interpolate and speed up the frames without any problem before.

I'm even interpolating to 72 frames per second; I saw that perfect multiples are ideal, is that correct? Unfortunately, even with it enabled, I can't perceive any difference in smoothness. I hope that when I buy a 240Hz monitor, this will change.

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Re: Exponential output dropped frames in mpv when speed > 1.0x (SVP active

if you have 72 Hz screen and do frame interpolation up to 72 fps, and then increase playback speed to 1.1x, then you definitely must have 7-8 frames per second dropped

3 Reply by dawkinscm (edited by dawkinscm Yesterday 09:51:22)

Re: Exponential output dropped frames in mpv when speed > 1.0x (SVP active

Also the dropped frames rising counter doesn't always mean that you see actual issues on screen. Partially because, good displays are can hide such issues and partly because just opening the mpv overlay is a minor tax on the system which can cause mpv to drop packets if you are already at the limit.

Re: Exponential output dropped frames in mpv when speed > 1.0x (SVP active

Chainik wrote:

if you have 72 Hz screen and do frame interpolation up to 72 fps, and then increase playback speed to 1.1x, then you definitely must have 7-8 frames per second dropped

I believe the solution is some kind of command line in mpv.conf.

As I mentioned in the post, I was able to use it without problems even at speeds like 1.5-1.8x with interpolation enabled.

Re: Exponential output dropped frames in mpv when speed > 1.0x (SVP active

you want something strange...
72 frames per second at 1.5 speed is 108 frames per second
your 72 Hz screen won't show 108 frames per second regardless of any command line options
it will only show 72 frames. because it's 72 hz big_smile

6 Reply by flowreen91 (edited by flowreen91 Yesterday 22:18:42)

Re: Exponential output dropped frames in mpv when speed > 1.0x (SVP active

matiasflyhigh wrote:

Hello everyone,
a performance issue with the integrated mpv on SVP that hasn't occurred before. Recently

Ooh SVP updated to latest mpv version so it probably reseted your mpv.conf configuration file
and since it's newer mpv version, slight chance that it works slower than old version and might trigger this error in console:
https://gyazo.com/2cfe3723f732a057a8a838249d01320c (you can confirm by pressing ` in mpv)

Try to play around with mpv.conf settings and see which removes the stutter:
hwdec=auto
or
hwdec=no

add this too if slowdown persists:
profile=fast

If you think it's caused by bad SVP settings, then go to your SVP profile -> Automatic options selection -> and select one of the default profiles to reset it to recommended settings, and restart SVP.
This should fix the recent performance issue.

7 Reply by dawkinscm (edited by dawkinscm Yesterday 22:46:25)

Re: Exponential output dropped frames in mpv when speed > 1.0x (SVP active

flowreen91 wrote:
matiasflyhigh wrote:

Hello everyone,
a performance issue with the integrated mpv on SVP that hasn't occurred before. Recently

Ooh SVP updated to latest mpv version so it probably reseted your mpv.conf configuration file
and since it's newer mpv version, slight chance that it works slower than old version and might trigger this error in console:
https://gyazo.com/2cfe3723f732a057a8a838249d01320c (you can confirm by pressing ` in mpv)

Try to play around with mpv.conf settings and see which removes the stutter:
hwdec=auto
or
hwdec=no

add this too if slowdown persists:
profile=fast

If you think it's caused by bad SVP settings, then go to your SVP profile -> Automatic options selection -> and select one of the default profiles to reset it to recommended settings, and restart SVP.
This should fix the recent performance issue.

It's a more recent mpv version but not the latest, and it's not slower. Profile=fast will make some difference, but not enough to stop major packet loss. With this GPU, changing to hwdec=no will almost certainly perform worse than hwdec=auto.  I also wouldn't use those SVP settings as some of them could be causing problems for your CPU as well as your GPU. Better off using Automatic after SVP checks performance, then start to tweak from there.

Also it's worth restarting SVP every so often otherwise performance will begin to suffer (possible memory leaks?).

Re: Exponential output dropped frames in mpv when speed > 1.0x (SVP active

dawkinscm wrote:
flowreen91 wrote:
matiasflyhigh wrote:

Hello everyone,
a performance issue with the integrated mpv on SVP that hasn't occurred before. Recently

Ooh SVP updated to latest mpv version so it probably reseted your mpv.conf configuration file
and since it's newer mpv version, slight chance that it works slower than old version and might trigger this error in console:
https://gyazo.com/2cfe3723f732a057a8a838249d01320c (you can confirm by pressing ` in mpv)

Try to play around with mpv.conf settings and see which removes the stutter:
hwdec=auto
or
hwdec=no

add this too if slowdown persists:
profile=fast

If you think it's caused by bad SVP settings, then go to your SVP profile -> Automatic options selection -> and select one of the default profiles to reset it to recommended settings, and restart SVP.
This should fix the recent performance issue.

It's a more recent mpv version but not the latest, and it's not slower. Profile=fast will make some difference, but not enough to stop major packet loss. With this GPU, changing to hwdec=no will almost certainly perform worse than hwdec=auto.  I also wouldn't use those SVP settings as some of them could be causing problems for your CPU as well as your GPU. Better off using Automatic after SVP checks performance, then start to tweak from there.

Also it's worth restarting SVP every so often otherwise performance will begin to suffer (possible memory leaks?).

It's nothing related to SVP; no matter what configuration I'm currently using, this problem occurs. It didn't happen a few days ago. I imagine it's some command in mpv.conf that I forgot to reset; I thought it was "display-sync=resample" or something similar. I tested them all, but nothing solved it... the lack of a backup cost me too much, hahaha.

I'm going to end up uninstalling and giving up on movies/series. I can't watch them in 1x speed; I find it too slow, and buying a product I can't use is a real shame.

9 Reply by dawkinscm (edited by dawkinscm Today 01:18:30)

Re: Exponential output dropped frames in mpv when speed > 1.0x (SVP active

matiasflyhigh wrote:
dawkinscm wrote:
flowreen91 wrote:

Ooh SVP updated to latest mpv version so it probably reseted your mpv.conf configuration file
and since it's newer mpv version, slight chance that it works slower than old version and might trigger this error in console:
https://gyazo.com/2cfe3723f732a057a8a838249d01320c (you can confirm by pressing ` in mpv)

Try to play around with mpv.conf settings and see which removes the stutter:
hwdec=auto
or
hwdec=no

add this too if slowdown persists:
profile=fast

If you think it's caused by bad SVP settings, then go to your SVP profile -> Automatic options selection -> and select one of the default profiles to reset it to recommended settings, and restart SVP.
This should fix the recent performance issue.

It's a more recent mpv version but not the latest, and it's not slower. Profile=fast will make some difference, but not enough to stop major packet loss. With this GPU, changing to hwdec=no will almost certainly perform worse than hwdec=auto.  I also wouldn't use those SVP settings as some of them could be causing problems for your CPU as well as your GPU. Better off using Automatic after SVP checks performance, then start to tweak from there.

Also it's worth restarting SVP every so often otherwise performance will begin to suffer (possible memory leaks?).

It's nothing related to SVP; no matter what configuration I'm currently using, this problem occurs. It didn't happen a few days ago. I imagine it's some command in mpv.conf that I forgot to reset; I thought it was "display-sync=resample" or something similar. I tested them all, but nothing solved it... the lack of a backup cost me too much, hahaha.

I'm going to end up uninstalling and giving up on movies/series. I can't watch them in 1x speed; I find it too slow, and buying a product I can't use is a real shame.

I used to use RIFE to watch at 80fps on a 60fps display so what you are saying is possible, although my old GPU was a 4080. SVP isn't the issue because no one else is suffering from this. Your SVP config could be an issue depending on your CPU which you haven't mentioned yet. Also uou should post your mpv config on here because I suspect it's a meme config. If it's not, then you should completely remove SVP, reboot then retrying with my previous suggestion.