Black Screen on Video Playback

[cosmarchy]

I'm having trouble playing a video as all I can see is a black screen.

The seek bar shows a time which is about right for the downloaded video duration however it finishes in seconds as if it reached the end of the clip. There is no video at all, just a black screen where the video should be.

I have installed v3.0.3 Vetinari.

Could anyone tell me where the problem might be?

I have included a log:

main debug: processing request item: 192.168.1.250_02_20180707214026498.mp4, node: Playlist, skip: 0
main debug: rebuilding array of current - root Playlist
main debug: rebuild done - 4 items, index 3
main debug: starting playback of new item
main debug: resyncing on 192.168.1.250_02_20180707214026498.mp4
main debug: 192.168.1.250_02_20180707214026498.mp4 is at 3
main debug: creating new input thread
main debug: Creating an input for '192.168.1.250_02_20180707214026498.mp4'
main debug: requesting art for new input thread
main debug: using timeshift granularity of 50 MiB
main debug: using timeshift path: C:\Users\cos\AppData\Local\Temp
main debug: `file:///C:/Users/cos/Web/PlaybackFiles/2018-07-07/192.168.1.250_02_20180707214026498.mp4' gives access `file' demux `any' path `/C:/Users/cos/Web/PlaybackFiles/2018-07-07/192.168.1.250_02_20180707214026498.mp4'
main debug: creating demux: access='file' demux='any' location='/C:/Users/cos/Web/PlaybackFiles/2018-07-07/192.168.1.250_02_20180707214026498.mp4' file='C:\Users\cos\Web\PlaybackFiles\2018-07-07\192.168.1.250_02_20180707214026498.mp4'
main debug: looking for access_demux module matching "file": 15 candidates
main debug: no access_demux modules matched
main debug: creating access: file:///C:/Users/cos/Web/PlaybackFiles/2018-07-07/192.168.1.250_02_20180707214026498.mp4
main debug: (path: C:\Users\cos\Web\PlaybackFiles\2018-07-07\192.168.1.250_02_20180707214026498.mp4)
main debug: looking for access module matching "file": 26 candidates
main debug: looking for meta fetcher module matching "any": 1 candidates
main debug: using access module "filesystem"
main debug: looking for stream_filter module matching "prefetch,cache_read": 24 candidates
cache_read debug: Using stream method for AStream*
cache_read debug: starting pre-buffering
cache_read debug: received first data after 0 ms
cache_read debug: pre-buffering done 1024 bytes in 0s - 1000000 KiB/s
main debug: using stream_filter module "cache_read"
main debug: looking for stream_filter module matching "any": 24 candidates
lua debug: Trying Lua scripts in C:\Users\cos\AppData\Roaming\vlc\lua\meta\fetcher
lua debug: Trying Lua scripts in C:\Program Files\VideoLAN\VLC\lua\meta\fetcher
main debug: no meta fetcher modules matched
main debug: looking for art finder module matching "any": 2 candidates
lua debug: Trying Lua scripts in C:\Users\cos\AppData\Roaming\vlc\lua\playlist
lua debug: Trying Lua scripts in C:\Program Files\VideoLAN\VLC\lua\playlist
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\anevia_streams.luac
lua debug: Trying Lua scripts in C:\Users\cos\AppData\Roaming\vlc\lua\meta\art
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\anevia_xml.luac
lua debug: Trying Lua scripts in C:\Program Files\VideoLAN\VLC\lua\meta\art
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: skipping script (unmatched scope) C:\Program Files\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\appletrailers.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: skipping script (unmatched scope) C:\Program Files\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\bbc_co_uk.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: skipping script (unmatched scope) C:\Program Files\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\cue.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
lua debug: skipping script (unmatched scope) C:\Program Files\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
main debug: no art finder modules matched
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\dailymotion.luac
main debug: looking for meta fetcher module matching "any": 1 candidates
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\jamendo.luac
lua debug: Trying Lua scripts in C:\Users\cos\AppData\Roaming\vlc\lua\meta\fetcher
lua debug: Trying Lua scripts in C:\Program Files\VideoLAN\VLC\lua\meta\fetcher
main debug: no meta fetcher modules matched
main debug: looking for art finder module matching "any": 2 candidates
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\koreus.luac
lua debug: Trying Lua scripts in C:\Users\cos\AppData\Roaming\vlc\lua\meta\art
lua debug: Trying Lua scripts in C:\Program Files\VideoLAN\VLC\lua\meta\art
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\liveleak.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\newgrounds.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\rockbox_fm_presets.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\soundcloud.luac
main debug: no art finder modules matched
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\twitch.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\vimeo.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\vocaroo.luac
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\playlist\youtube.luac
main debug: no stream_filter modules matched
main debug: looking for stream_directory module matching "any": 1 candidates
main debug: no stream_directory modules matched
main debug: attachment of directory-extractor failed for file:///C:/Users/cos/Web/PlaybackFiles/2018-07-07/192.168.1.250_02_20180707214026498.mp4
main debug: looking for stream_filter module matching "record": 24 candidates
main debug: using stream_filter module "record"
main debug: creating demux: access='file' demux='any' location='/C:/Users/cos/Web/PlaybackFiles/2018-07-07/192.168.1.250_02_20180707214026498.mp4' file='C:\Users\cos\Web\PlaybackFiles\2018-07-07\192.168.1.250_02_20180707214026498.mp4'
main debug: looking for demux module matching "mp4": 55 candidates
main debug: looking for xml reader module matching "any": 1 candidates
main debug: using xml reader module "xml"
ts debug: TS module discarded (lost sync)
mod debug: MOD validation failed (ext=mp4)
webvtt debug: subtitle demux discarded
avcodec debug: trying url: C:\Users\cos\Web\PlaybackFiles\2018-07-07\192.168.1.250_02_20180707214026498.mp4
avcodec debug: CPU flags: 0x000fd3db
vobsub debug: this doesn't seem to be a vobsub file
ps warning: this does not look like an MPEG PS stream, continuing anyway
main debug: using demux module "ps"
main debug: looking for a subtitle file in C:\Users\cos\Web\PlaybackFiles\2018-07-07\
main debug: looking for meta reader module matching "any": 2 candidates
lua debug: Trying Lua scripts in C:\Users\cos\AppData\Roaming\vlc\lua\meta\reader
lua debug: Trying Lua scripts in C:\Program Files\VideoLAN\VLC\lua\meta\reader
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\reader\filename.luac
main debug: no meta reader modules matched
main debug: `file:///C:/Users/cos/Web/PlaybackFiles/2018-07-07/192.168.1.250_02_20180707214026498.mp4' successfully opened
ps debug: we found a length of: 1s
ps debug: contains a PSM
main debug: selecting program id=0
main debug: looking for packetizer module matching "any": 24 candidates
main debug: using packetizer module "h264"
main debug: looking for video decoder module matching "any": 17 candidates
avcodec debug: using ffmpeg Lavc58.6.103
avcodec debug: CPU flags: 0x000fd3db
avcodec debug: allowing 6 thread(s) for decoding
avcodec debug: codec (h264) started
avcodec debug: using frame thread mode with 6 threads
main debug: using video decoder module "avcodec"
main debug: Buffering 0%
h264 debug: found NAL_SPS (sps_id=0)
h264 debug: found NAL_PPS (pps_id=0 sps_id=0)
main debug: looking for packetizer module matching "any": 24 candidates
main debug: using packetizer module "mpegaudio"
main debug: looking for audio decoder module matching "any": 23 candidates
mpg123 debug: mpga->f32l, bits per sample: 32
main debug: using audio decoder module "mpg123"
ps debug: force SCR: 65500400001
main warning: clock gap, unexpected stream discontinuity
main warning: feeding synchro with a new reference point trying to recover from clock gap
ps debug: force SCR: 65500440001
main debug: Buffering 13%
ps debug: force SCR: 65500481001
main debug: Buffering 27%
ps debug: force SCR: 65500521001
main debug: Buffering 40%
ps debug: force SCR: 65500560001
main debug: Buffering 53%
ps debug: force SCR: 65500600001
main debug: Buffering 66%
main debug: restarting module due to input format change
ps debug: force SCR: 65500641001
main debug: Buffering 80%
main debug: removing module "avcodec"
ps debug: force SCR: 65500680001
main debug: Buffering 93%
ps debug: force SCR: 65500720001
main debug: Stream buffering done (320 ms in 0 ms)
qt debug: IM: Setting an input
main debug: looking for video decoder module matching "any": 17 candidates
avcodec debug: using ffmpeg Lavc58.6.103
avcodec debug: CPU flags: 0x000fd3db
avcodec debug: allowing 6 thread(s) for decoding
avcodec debug: codec (h264) started
avcodec debug: using frame thread mode with 6 threads
main debug: using video decoder module "avcodec"
main error: buffer deadlock prevented
main error: buffer deadlock prevented
main debug: Decoder wait done in 5 ms
ps debug: force SCR: 65500760001
avcodec debug: available hardware decoder output format 119 (cuda)
avcodec debug: available hardware decoder output format 53 (dxva2_vld)
avcodec debug: available hardware decoder output format 118 (d3d11va_vld)
avcodec debug: available hardware decoder output format 174 (d3d11)
avcodec debug: available software decoder output format 12 (yuvj420p)
ps debug: force SCR: 65500800001
ps debug: force SCR: 65500840001
ps debug: force SCR: 65500880001
ps debug: force SCR: 65500921001
ps debug: force SCR: 65500960001
ps debug: force SCR: 65501000001
ps debug: force SCR: 65501040001
ps debug: force SCR: 65501080001
ps debug: force SCR: 65501120001
ps debug: force SCR: 65501160001
ps debug: force SCR: 65501200001
ps debug: force SCR: 65501240001
ps debug: force SCR: 65501280001
ps debug: force SCR: 65501321001
ps debug: force SCR: 65501360001
ps debug: force SCR: 65501401001
ps debug: force SCR: 65501441001
ps debug: force SCR: 65501481001
ps debug: force SCR: 65501521001
ps debug: force SCR: 65501560001
ps debug: force SCR: 65501600001
ps debug: force SCR: 65501640001
ps debug: force SCR: 65501681001
ps debug: force SCR: 65501720001
ps debug: force SCR: 65501761001
main debug: EOF reached
main debug: waiting decoder fifos to empty
avcodec debug: trying format d3d11va_vld
main debug: looking for text renderer module matching "any": 3 candidates
freetype debug: Using DWrite backend
freetype debug: DWrite_GetFamily(): family name: Arial
freetype debug: DWrite_ParseFamily(): using font at index 0 with weight 400 for bold: 0, italic: 0
freetype debug: DWrite_ParseFamily(): using font at index 1 with weight 700 for bold: 1, italic: 0
freetype debug: DWrite_ParseFamily(): using font at index 2 with weight 400 for bold: 0, italic: 1
freetype debug: DWrite_ParseFamily(): using font at index 3 with weight 700 for bold: 1, italic: 1
main debug: using text renderer module "freetype"
main debug: looking for video converter module matching "any": 24 candidates
swscale debug: 32x32 (32x32) chroma: YUVA -> 16x16 (16x16) chroma: RGBA with scaling using Bicubic (good quality)
main debug: using video converter module "swscale"
main debug: looking for video converter module matching "any": 24 candidates
yuvp debug: YUVP to YUVA converter
main debug: using video converter module "yuvp"
main debug: Deinterlacing available
main debug: deinterlace -1, mode auto, is_needed 0
main debug: looking for vout window module matching "qt,any": 3 candidates
qt debug: requesting video window...
main debug: resized to 2560x1440
main debug: using vout window module "qt"
main debug: looking for inhibit module matching "any": 1 candidates
main debug: using inhibit module "inhibit"
main debug: Opening vout display wrapper
main debug: looking for vout display module matching "glwin32": 12 candidates
glwin32 debug: creating Vout EventThread
glwin32 debug: Win32VoutCreateWindow
main debug: VoutDisplayEvent 'resize' 2560x1440
main debug: resized to 958x935
main debug: VoutDisplayEvent 'resize' 958x935
glwin32 debug: inclinometer not found. (hr=0x80070490)
glwin32 debug: created video sub-window
glwin32 debug: Vout EventThread running
main debug: looking for opengl module matching "any": 1 candidates
main debug: resized to 1920x925
main debug: VoutDisplayEvent 'resize' 1920x925
main debug: resized to 958x935
main debug: VoutDisplayEvent 'resize' 958x935
main debug: waiting decoder fifos to empty
main debug: using opengl module "wgl"
main debug: looking for glconv module matching "any": 1 candidates
main debug: no glconv modules matched
glwin32 debug: MAP_PERSISTENT support (direct rendering) enabled
main debug: using vout display module "glwin32"
main debug: A filter to adapt decoder DX11 to display NV12 is needed
main debug: looking for video converter module matching "any": 24 candidates
main debug: using video converter module "d3d11_filters"
main debug: Filter 'd3d11_filters' (000000000421b6c0) appended to chain
main debug: original format sz 2560x1440, of (0,0), vsz 2560x1440, 4cc DX11, sar 1:1, msk r0x0 g0x0 b0x0
main debug: removing module "freetype"
main debug: VoutDisplayEvent 'resize' 958x935
main debug: looking for text renderer module matching "any": 3 candidates
freetype debug: Using DWrite backend
freetype debug: DWrite_GetFamily(): family name: Arial
freetype debug: DWrite_ParseFamily(): using font at index 0 with weight 400 for bold: 0, italic: 0
freetype debug: DWrite_ParseFamily(): using font at index 1 with weight 700 for bold: 1, italic: 0
freetype debug: DWrite_ParseFamily(): using font at index 2 with weight 400 for bold: 0, italic: 1
freetype debug: DWrite_ParseFamily(): using font at index 3 with weight 700 for bold: 1, italic: 1
main debug: using text renderer module "freetype"
main debug: looking for hw decoder module matching "none": 2 candidates
main debug: no hw decoder modules matched
main debug: waiting decoder fifos to empty
avcodec debug: trying format dxva2_vld
main debug: removing module "d3d11_filters"
main debug: Filter 000000000421b6c0 removed from chain
main debug: removing module "glwin32"
main debug: resized to 1920x925
main debug: VoutDisplayEvent 'resize' 1920x925
main debug: removing module "wgl"
glwin32 error: SetThumbNailClip failed: 0x800706f4
glwin32 debug: Win32 Vout EventThread terminating
glwin32 debug: Win32VoutCloseWindow
main debug: resized to 958x935
main debug: VoutDisplayEvent 'resize' 958x935
glwin32 debug: WinProc WM_DESTROY
main debug: deinterlace -1, mode auto, is_needed 0
main debug: Opening vout display wrapper
main debug: looking for vout display module matching "glwin32": 12 candidates
glwin32 debug: creating Vout EventThread
glwin32 debug: Win32VoutCreateWindow
main debug: VoutDisplayEvent 'resize' 958x935
glwin32 debug: inclinometer not found. (hr=0x80070490)
glwin32 debug: created video sub-window
glwin32 debug: Vout EventThread running
main debug: looking for opengl module matching "any": 1 candidates
main debug: resized to 1920x925
main debug: VoutDisplayEvent 'resize' 1920x925
main debug: waiting decoder fifos to empty
main debug: resized to 958x935
main debug: VoutDisplayEvent 'resize' 958x935
main debug: using opengl module "wgl"
main debug: looking for glconv module matching "any": 1 candidates
direct3d9 debug: Using Direct3D9 Extended API!
direct3d9 debug: D3D9 device caps 0x19AE50 / 0x51
direct3d9 debug: Direct3d9 Device: Intel(R) UHD Graphics 630 32902 16027 0
main debug: waiting decoder fifos to empty
main debug: using glconv module "direct3d9"
main debug: using vout display module "glwin32"
main debug: original format sz 2560x1440, of (0,0), vsz 2560x1440, 4cc DXA9, sar 1:1, msk r0x0 g0x0 b0x0
main debug: reusing provided vout
main debug: looking for hw decoder module matching "none": 2 candidates
main debug: no hw decoder modules matched
main debug: waiting decoder fifos to empty
main debug: VoutDisplayEvent 'resize' 958x935
main debug: removing module "glwin32"
main debug: removing module "direct3d9"
main debug: removing module "wgl"
glwin32 error: SetThumbNailClip failed: 0x800706f4
glwin32 debug: Win32 Vout EventThread terminating
glwin32 debug: Win32VoutCloseWindow
glwin32 debug: WinProc WM_DESTROY
main debug: deinterlace -1, mode auto, is_needed 0
main debug: Opening vout display wrapper
main debug: looking for vout display module matching "glwin32": 12 candidates
glwin32 debug: creating Vout EventThread
glwin32 debug: Win32VoutCreateWindow
main debug: VoutDisplayEvent 'resize' 958x935
glwin32 debug: inclinometer not found. (hr=0x80070490)
glwin32 debug: created video sub-window
glwin32 debug: Vout EventThread running
main debug: looking for opengl module matching "any": 1 candidates
main debug: resized to 1920x925
main debug: VoutDisplayEvent 'resize' 1920x925
main debug: resized to 958x935
main debug: VoutDisplayEvent 'resize' 958x935
main debug: waiting decoder fifos to empty
main debug: using opengl module "wgl"
glwin32 debug: MAP_PERSISTENT support (direct rendering) enabled
main debug: using vout display module "glwin32"
main debug: original format sz 2560x1442, of (0,0), vsz 2560x1440, 4cc J420, sar 1:1, msk r0x0 g0x0 b0x0
main debug: reusing provided vout
main debug: waiting decoder fifos to empty
main debug: VoutDisplayEvent 'resize' 958x935
main error: Timestamp conversion failed (delay 300000, buffering 100000, bound 9000000)
main error: Could not convert timestamp 13168293000 for FFmpeg
main debug: resized to 1920x925
main debug: VoutDisplayEvent 'resize' 1920x925
main debug: killing decoder fourcc `h264'
main debug: removing module "avcodec"
main debug: resized to 958x935
main debug: VoutDisplayEvent 'resize' 958x935
main debug: saving a free vout
main debug: reusing provided vout
main debug: removing module "h264"
main debug: killing decoder fourcc `mpga'
main debug: removing module "mpg123"
main debug: removing module "mpegaudio"
main debug: removing module "ps"
main debug: Program doesn't contain anymore ES
main debug: removing module "record"
main debug: removing module "cache_read"
main debug: removing module "filesystem"
main debug: dead input
main debug: changing item without a request (current 3/4)
main debug: nothing to play
main debug: destroying useless vout
main debug: removing module "glwin32"
main debug: removing module "wgl"
glwin32 error: SetThumbNailClip failed: 0x800706f4
glwin32 debug: Win32 Vout EventThread terminating
glwin32 debug: Win32VoutCloseWindow
glwin32 debug: WinProc WM_DESTROY
main debug: removing module "inhibit"
qt debug: releasing video...
qt debug: IM: Deleting the input
qt debug: Video is not needed anymore
main debug: removing module "freetype"
main debug: removing module "yuvp"
main debug: removing module "swscale"

[garf]

Hello,

your media seems very broken:
- VLC says it is not a mp4 file (missing the first part of the file/header ?)
- VLC finds some h264 codec and some audio, but timestamps seem broken (which should explain why playback finishes "in seconds").

I am not sure we can do something about that, unfortunately.

[cosmarchy]

Hi,

Thanks for your reply.

The video is a download from a Hikvision NVR which has until now been reliable. I am downloading via it's web interface in to my new Win 10 laptop which is how the problem came to light (my previous Win 7 laptop doesn't have this issue).

The strange thing is that the Hikvision VSPlayer software can read these files so I'm now wondering how some software can't and some can???

[Jean-Baptiste Kempf]

The strange thing is that the Hikvision VSPlayer software can read these files so I'm now wondering how some software can't and some can???

All codecs are different.