How to log and report slow video playback

[rocky]

I have an mkv file which plays perfectly fine in smplayer, but play slow on vlc latest nightly. I've downloaded win64-debug, but how can I further test and report the issue?

[unidan]

Hi, can you give your graphic driver, windows full version (launch winver.exe) and graphics card, and upload the file somewhere ?

You can also post logs of the playback.

To help you, we need messages, to completely understand what your problems is.
To fix this, please be sure before you start the playback to:

1. Open: Tools -> Messages.
2. Set Verbosity to 2
3. Start playback to reproduce your issue
4. Save text in a file or copy into clipboard
5. Then paste the full resulting log here between [​code]and[​/code] (or use Pastebin.com if it's too long)

Also don't forget to name your Operating System and provide the VLC media player version.

[rocky]

Windows 10 1903 18362.239
vlc-4.0.0-20190813-0834-dev-win64-debug.7z
Nvidia Geforce GTX 1080
- Controller: NVIDIA
- controller date: 03/january/2018
- controller version: 23.21.13.9065
- digital signer: Microsoft Windows Hardware Compatibility Publisher

File link:

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https://mega.nz/#!RYsUCYrQ!b3y9-jrJWl3kNhMJOJNBZx7mXzWqz5vqAPvfWyS6NaM

Messages verbosity 2:

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https://pastebin.com/zH79HW9z

[rocky]

Happens exactly the same on ubuntu 19.04 with nvidia driver and vlc 3.0.7.1

[unidan]

Ok, reproducing, we will have a look at it. Thank you

[Lotesdelere]

For the record:

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Format : HEVC Format profile : @L3.1@Main Frame rate mode : Variable Frame rate : 23.976 (23976/1000) FPS Chroma subsampling : 4:4:4 Bit depth : 10 bits

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direct3d11 warning: could not get a IDXGISwapChain3 direct3d11 debug: Using pixel format RGBA64 for chroma I4AL ... main debug: Received first picture main error: buffer deadlock prevented main debug: Decoder wait done in 235 ms main debug: VoutDisplayEvent 'resize' 1920x943 main warning: picture is too late to be displayed (missing 60 ms) main debug: picture might be displayed late (missing 18 ms) main warning: playback too early (-54604): down-sampling main debug: picture might be displayed late (missing 7 ms) main warning: picture is too late to be displayed (missing 100 ms) main warning: picture is too late to be displayed (missing 58 ms) main debug: picture might be displayed late (missing 17 ms)

[rocky]

Still not fixed.