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How to log and report slow video playback
Posted: 12 Aug 2019 23:35
by 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?
Re: How to log and report slow video playback
Posted: 13 Aug 2019 08:05
by 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:
- Open: Tools -> Messages.
- Set Verbosity to 2
- Start playback to reproduce your issue
- Save text in a file or copy into clipboard
- 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.
Re: How to log and report slow video playback
Posted: 13 Aug 2019 17:48
by 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:
Code: Select all
https://mega.nz/#!RYsUCYrQ!b3y9-jrJWl3kNhMJOJNBZx7mXzWqz5vqAPvfWyS6NaM
Messages verbosity 2:
Re: How to log and report slow video playback
Posted: 13 Aug 2019 18:10
by rocky
Happens exactly the same on ubuntu 19.04 with nvidia driver and vlc 3.0.7.1
Re: How to log and report slow video playback
Posted: 14 Aug 2019 11:29
by unidan
Ok, reproducing, we will have a look at it. Thank you
Re: How to log and report slow video playback
Posted: 14 Aug 2019 12:01
by Lotesdelere
For the record:
Code: Select all
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 bitsCode: Select all
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)
Re: How to log and report slow video playback
Posted: 02 Nov 2019 15:23
by rocky
Still not fixed.