2015-12-14, 09:32
@ Pillendreher > what you are talking about on PC's / laptops is in Kodi:
Settings > System > Videos > Playback > Sync playback to display
If you feed 23.976fps video out to a display that does not have some sort of Cinema Drive or 24p movie mode but just plain standard 24Hz only, like a PC Monitor for example. Kodi can speed up that 23.976fps video to 24fps and output that so its all in sync.
Now there is also an added complication as the corresponding 23.976 audio also has to be resampled and sped up to 24Hz as well. This happens in the background in Kodi. You may detect it as audio will be heard with a higher pitch.
High Bitrate Blurays with high quality Audio needs CPU processing power to achieve 24fps Video and Audio output to a 24Hz only capable Display and all be nicely in sync. Some device are terrible and too underpowered to do this well. Or they lack the necessary Video Reference clock to achieve this. Like the Vero / CuBox / Solidrun iMX6 devices as an example.
This is why on low powered ARM devices feeding 23.976fps video output at 23.976fps to a compatible 24p TV is definitely preferred as only minimal processing is needed. HDMI video timing clocks are adjusted by the Kernel code in the media players Firmware (Frame Rate Automation is the name for it with AMLogic), and all the Motion Smoothing for silky smooth video playback is handled by the TV's far superior electronics when it uses it 24p Cinema mode
To note here is that Sync playback to display does not work in Android. Nor do you get 23.976fps video output from devices like Macs running OSX, Amazon Fire TVs/Stick , Rockchip, Google Nexus and pre Intel Haswell gear. Usually these display 23.976fps video at 60Hz and use a 3:2 pulldown technique to display that video which then produces video judder that some people are sensitive too and hate.
Settings > System > Videos > Playback > Sync playback to display
If you feed 23.976fps video out to a display that does not have some sort of Cinema Drive or 24p movie mode but just plain standard 24Hz only, like a PC Monitor for example. Kodi can speed up that 23.976fps video to 24fps and output that so its all in sync.
Now there is also an added complication as the corresponding 23.976 audio also has to be resampled and sped up to 24Hz as well. This happens in the background in Kodi. You may detect it as audio will be heard with a higher pitch.
High Bitrate Blurays with high quality Audio needs CPU processing power to achieve 24fps Video and Audio output to a 24Hz only capable Display and all be nicely in sync. Some device are terrible and too underpowered to do this well. Or they lack the necessary Video Reference clock to achieve this. Like the Vero / CuBox / Solidrun iMX6 devices as an example.
This is why on low powered ARM devices feeding 23.976fps video output at 23.976fps to a compatible 24p TV is definitely preferred as only minimal processing is needed. HDMI video timing clocks are adjusted by the Kernel code in the media players Firmware (Frame Rate Automation is the name for it with AMLogic), and all the Motion Smoothing for silky smooth video playback is handled by the TV's far superior electronics when it uses it 24p Cinema mode
To note here is that Sync playback to display does not work in Android. Nor do you get 23.976fps video output from devices like Macs running OSX, Amazon Fire TVs/Stick , Rockchip, Google Nexus and pre Intel Haswell gear. Usually these display 23.976fps video at 60Hz and use a 3:2 pulldown technique to display that video which then produces video judder that some people are sensitive too and hate.
