video decoder skips decode on some vp9 videos

[sdsucks]

starting from LAVFilters-0.75.1-17, lav video decoder shows the first frame(still picture) for about 5 seconds and plays the rest of the video on some youtube vp9 videos

sample: https://drive.google.com/file/d/1LBXpHTPlOYoyUN_103wtxfUOsvSp7n-r/view?usp=sharing

[Nevcairiel]

Cannot reproduce. The file plays fluidly all the way through for me.

[sdsucks]

hi, i did some more tests. seems like video renderer has something to do with this issue.

LAVVideo+madVR > skip LAVVideo+EVR-CP > fine MPCVideo+madVR > fine

madVR is latest beta 142

[lvqcl]

LAV Filters 0.75.1-44 + madVR beta 142 - no skips

[sdsucks]

one more thing i just found out;

LAVVideo(D3D11)+madVR > skip LAVVideo(DXVA2)+madVR > fine

MPCVideo(D3D11/DXVA2)+madVR > fine

[lvqcl]

Maybe some bug in video drivers?

[sdsucks]

i have an nvidia card and use the latest geforce driver.

anyway, i tested with mavVR 0.92.17 and same thing.

i guess my bottom line is; LAVVideo-0.75.1-17 and later in D3D11 mode with madVR skips the initial 5 seconds or so on some youtube vp9 videos.

[clsid2]

Press Ctrl+J to show to madVR statistics OSD and make a screenshot.

[sdsucks]

here you go;

https://ibb.co/GfmkNhd

[Nevcairiel]

I've added builds for -16 and -45 to the nightlies at https://files.1f0.de/lavf/nightly/ for testing. Would be good to know if either makes a difference.

[sdsucks]

the skip issue seems to be gone for both builds. i've tested on more than 100 videos. and just for what it's worth, this issue doesn't seem to be related to a specific video codec.

[Nevcairiel]

If its gone with -45, then i'm happy, as thats the latest version. :)