[FFmpeg-user] BlackMagic multiple capture, BSOD

[Bouke (VideoToolShed)]

----- Original Message ----- 
From: "Roger Pack" <rogerdpack2 at gmail.com>
To: "FFmpeg user questions" <ffmpeg-user at ffmpeg.org>
Sent: Tuesday, June 03, 2014 7:21 PM
Subject: Re: [FFmpeg-user] BlackMagic multiple capture, BSOD


>I think I've heard of this before and thought it was buggy BM drivers...do
> other capture devices  handle multiple at the same time?

No idea, as i don't have any other devices...
Buggy BM drivers could be the case of course, but i get loads of different 
BSOD's.
Some directly traceble to decklink.sys, but others occur as well.

Bouke

>
> On Tue, Jun 3, 2014 at 10:36 AM, Bouke (VideoToolShed) <
> bouke at videotoolshed.com> wrote:
>
>> Trying to do multiple instances capturing from BM cards.
>> (Got a decklink Quad and a decklink Studio, doing 5 at a time)
>> HP Z420, with multithreading enabled (12 cores) Win7 64 bit / 16 gig ram
>>
>> It sorta kinda works, but every now and then (about after some 14 start /
>> stops) i get a blue screen of death.
>>
>> disabling multithreading gives a slightly better performance, but still
>> BSOD on the most weird moments...
>> (on deleting files after some capture attempts)
>>
>> Anyone got something like this working? Any hints on the secret 
>> handshake?
>> (Compatible hardware, settings, driver versions?)
>>
>> Most simple commands (but then i run 5 of these at the same time) below.
>>
>> Thx,
>> Bouke
>>
>> C:\Users\Bouke>C:\Users\Bouke\Desktop\BMtest\xtras\ffmpeg.exe -f dshow
>> -rtbufsiz
>> e 1024000k -pixel_format uyvy422 -framerate 25 -s 1920:1080 -re -i
>> video="Deckli
>> nk Video Capture":audio="Decklink Audio Capture" -i
>> C:\Users\Bouke\Desktop\BMtes
>> t\slate.png -filter_complex "overlay=enable='lte(t,2)'" -b:v 6M -vcodec
>> mpeg2vid
>> eo -pix_fmt yuv422p -acodec mp2 -s 960x540 -aspect 16:9 -f tee -map 0:v
>> -map 0:a
>>  "[f=mpegts]udp://192.168.1.61:1231"
>> ffmpeg version N-60087-g94a5241 Copyright (c) 2000-2014 the FFmpeg
>> developers
>>  built on Jan 21 2014 22:06:13 with gcc 4.8.2 (GCC)
>>  configuration: --enable-gpl --enable-version3 --disable-w32threads
>> --enable-av
>> isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
>> --enab
>> le-iconv --enable-libass --enable-libbluray --enable-libcaca
>> --enable-libfreetyp
>> e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
>> --ena
>> ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
>> --enable-l
>> ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
>> --enable-libsp
>> eex --enable-libtheora --enable-libtwolame --enable-libvidstab
>> --enable-libvo-aa
>> cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
>> --enable-libwavp
>> ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
>>  libavutil      52. 63.100 / 52. 63.100
>>  libavcodec     55. 48.102 / 55. 48.102
>>  libavformat    55. 25.101 / 55. 25.101
>>  libavdevice    55.  5.102 / 55.  5.102
>>  libavfilter     4.  1.100 /  4.  1.100
>>  libswscale      2.  5.101 /  2.  5.101
>>  libswresample   0. 17.104 /  0. 17.104
>>  libpostproc    52.  3.100 / 52.  3.100
>> Guessed Channel Layout for  Input Stream #0.1 : stereo
>> Input #0, dshow, from 'video=Decklink Video Capture:audio=Decklink Audio
>> Capture
>> ':
>>  Duration: N/A, start: 0.089250, bitrate: 1536 kb/s
>>    Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422(tv),
>> 1920x1080, 25
>> tbr, 10000k tbn, 25 tbc
>>    Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
>> Input #1, image2, from 'C:\Users\Bouke\Desktop\BMtest\slate.png':
>>  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
>>    Stream #1:0: Video: png, rgba, 1920x1080, 25 tbr, 25 tbn, 25 tbc
>> Output #0, tee, to '[f=mpegts]udp://192.168.1.61:1231':
>>  Metadata:
>>    encoder         : Lavf55.25.101
>>    Stream #0:0: Video: mpeg2video, yuv422p, 960x540 [SAR 1:1 DAR 16:9],
>> q=2-31,
>> 6000 kb/s, 90k tbn, 25 tbc (default)
>>    Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 128 kb/s
>> Stream mapping:
>>  Stream #0:0 (rawvideo) -> overlay:main (graph 0)
>>  Stream #1:0 (png) -> overlay:overlay (graph 0)
>>  overlay (graph 0) -> Stream #0:0 (mpeg2video)
>>  Stream #0:1 -> #0:1 (pcm_s16le -> mp2)
>> Press [q] to stop, [?] for help
>> frame=   70 fps= 25 q=2.0 Lsize=N/A time=00:00:02.78 bitrate=N/A
>> video:118kB audio:44kB subtitle:0 global headers:0kB muxing overhead
>> -100.013287
>> %
>>
>>
>>
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