The VideoLAN Forums

Posted: **11 Jul 2018 09:57**

As a workaround, could you try to go to:
- Tools -> Settings
- Select "All" (in the lower left corner)
- Input / codecs ->Video Codecs -> FFmpeg
- Set "Threads" to 1

Posted: **11 Jul 2018 10:28**

We need the logs in debug mode.

Posted: **11 Jul 2018 12:48**

We need the logs in debug mode.

Thank you for the reply.

Is this enough? https://pastebin.com/raw/bsHRJMxh

Posted: **11 Jul 2018 14:52**

As a workaround, could you try to go to:
- Tools -> Settings
- Select "All" (in the lower left corner)
- Input / codecs ->Video Codecs -> FFmpeg
- Set "Threads" to 1

Wow, this fixed it, but I am curious what was causing the problem.

Thank you very much!

Posted: **12 Jul 2018 13:57**

My system:
Windows 10 (b17134), I7-4770, 16GB RAM, GPU: GTX960

Hi,
I've got the same problem: a .mp4 video showing a black screen or only the same frame (after several seconds of black screen).

Setting the prefs: Input / codecs ->Video Codecs -> FFmpeg -> Threads to 1, makes the video playing correctly.

If played correctly, the video consists of 23 stills that are showed over a period of 16 seconds.

I tried VLC 3.0.3 and also the latest (4.0.0) nightly build (both tried after resetting the prefs by removing the %appdata%/Roaming/vlc directory).

The video is freely available at U.S. Geological Survey: https://volcanoes.usgs.gov/observatorie ... e-2405.mp4
(I tested a local copy)

MediaInfo:

Code: Select all

General
Complete name                            : E:\perso\images\Kilauea_2018\multimediaFile-2405.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (isom/iso2/avc1/mp41)
File size                                : 17.9 MiB
Duration                                 : 16 s 900 ms
Overall bit rate                         : 8 861 kb/s
Writing application                      : Lavf58.12.100

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.1
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, RefFrames               : 4 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 16 s 900 ms
Duration_LastFrame                       : -600 ms
Bit rate                                 : 8 559 kb/s
Width                                    : 1 440 pixels
Height                                   : 950 pixels
Display aspect ratio                     : 3:2
Frame rate mode                          : Constant
Frame rate                               : 1.429 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 4.378
Stream size                              : 17.8 MiB (100%)
Writing library                          : x264 core 155 r2901 7d0ff22
Encoding settings                        : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=0 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=1 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=1000 / keyint_min=100 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=17.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00

VLC (4.0.4) debug msg: https://pastebin.com/M4vFS5FF

I hope this helps you to track down the problem.

Thank you very much for your time.

Posted: **12 Jul 2018 15:17**

My problem was a bit different - movie played back at correct speed but it was stuttery (lots of dropped frame). Good luck in solving your problem.

I still have no idea why changing threafs from 0 to 1 fixed the problem.

Posted: **15 Jul 2018 14:47**

As a workaround, could you try to go to:
- Tools -> Settings
- Select "All" (in the lower left corner)
- Input / codecs ->Video Codecs -> FFmpeg
- Set "Threads" to 1

Help. This workaround did not fix my issue using vlc 3.0.3 playing a 10bit hevc video.

Additional information: Using the workaround makes other video files looks like the Image snapshot so i have to revert to Thread = 0 to play them back normally.

Pastbin Debug Source: https://pastebin.com/xgTNmw46

Video Source( use episode 1): https://mega.nz/#F!hiJUyBKQ!EdqHFtFeqhJywmsZG1wQkg

Image Snapshot Source: https://i48.servimg.com/u/f48/11/43/03/97/vlcsna10.png

Laptop specification:
Windows Version: Windows 10 (64 bit)
System Memory: 8 GB
CPU Type: AMD A9-9410 RADEON R5, 5 COMPUTE CORES 2C+3G
Graphics Chipset: AMD Radeon(TM) R5 Graphics, Memory Size: 512 MB DDR4, Core Clock: 800 MHz

any tweaks i need to do or is it even possible to play the video using my system?
or direct me in the correct thread? :cheers:

Posted: **17 Jul 2018 10:40**

What are you driver versions ? Can you try with a 3.0 nightly build from here ? https://nightlies.videolan.org/build/wi ... 0717-0549/

Posted: **17 Jul 2018 22:22**

this one? all driver are up to date.
https://i48.servimg.com/u/f48/11/43/03/97/driver10.png

Installed the nightlies build but still the same.

Setting: Default (normal .mp4 .mkv working fine)
pastebin : https://pastebin.com/EAFSNZsy
image: Same https://i48.servimg.com/u/f48/11/43/03/97/vlcsna11.png

Settings: Thread = 1 (normal .mp4 .mkv not working)
pastebin: https://pastebin.com/2bHzdyuZ
image: Same https://i48.servimg.com/u/f48/11/43/03/97/vlcsna12.png

Posted: **17 Jul 2018 22:22**

New discovering in normal .mp4 .mkv using thread =1 the snapshot was clear but in the actual screen was greenish
pastebin: https://pastebin.com/UJpnjjhY
mp4 source: https://mega.nz/#!B10j1TgK!BabKKF5OAC0e ... F5Rvx9CrSo
image: (mp4) snapshot: https://i48.servimg.com/u/f48/11/43/03/97/vlcsna13.png
image: snippy tool: https://i48.servimg.com/u/f48/11/43/03/97/vvvv10.png

i tried playing it with Windows Media Player and it works but no subtitles.

Posted: **18 Jul 2018 23:41**

I'm experiencing this same problem, tried all solutions here and updated drivers for Windows 10 64, GTX 970, Intel i3. Video is choppy, frames drop, CPU is 70-80% (GPU is 4-8%), here are my debug logs https://pastebin.com/X61dfUqz

If I set my "threads" to 1 then everything is smooth for the first 10 seconds and then the video just stops (freezes) while audio continues to play.

Posted: **26 Jul 2018 16:13**

Hi everyone.. I fixed my problem now.. everything works on every format..

- Tools -> Settings
- Select "Simple" (in the lower left corner)
- Inputs/Codec (top Right) - > Codecs -> Hardware-accelerated decoding
- from "Automatic" change it to "direct3D11 Video Accerelation"

image: https://i48.servimg.com/u/f48/11/43/03/97/workin10.png

no more greenish video...

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