magewell pcie pro capture quad HDMI

Hello all, I use tvheadend (Ubuntu 18.04 server) with external HDMI encoders (TBS). The encoder send udp multicast to the tvheadend units (5) where it is piped using ffmpeg.

URL: pipe:////usr/bin/ffmpeg -loglevel fatal -i udp://@xxx.xxx.xxx.xxx:xxxxx -vcodec copy -acodec copy -f mpegts pipe:1

I have been asked to add local devices to some of the tvheadend (satellite receiver / android set top box), a magewell pro capture quad port HDMI pcie device was installed and seems to be working but I am unable to get the stream into tvheadend. I was hoping just changing the input part of the stream would do it but not so.

URL: pipe:////usr/bin/ffmpeg -loglevel fatal -i /dev/video0 -vcodec copy -acodec copy -f mpegts pipe:1

I added the stream in dvb inputs-networks(iptv automatic networks)-muxes(scan result OK) but I can not play the stream through the play button, vlc just does the knight rider thing bouncing back and forth no video. I mapped the service but there was no change. any help would be awesome

here is the info for the installed card:

mwcap-info -l

total: 4
device path firmware ver hardware ver driver ver alsa name device name
/dev/video0 1.32 A 1.3.4068 hw:0,0 00:00 Pro Capture Quad HDMI
/dev/video1 1.32 A 1.3.4068 hw:1,0 00:01 Pro Capture Quad HDMI
/dev/video2 1.32 A 1.3.4068 hw:2,0 00:02 Pro Capture Quad HDMI
/dev/video3 1.32 A 1.3.4068 hw:3,0 00:03 Pro Capture Quad HDMI

mwcap-info --info-input-video /dev/video0

Input common
Video input ............................ HDMI
Audio input ............................ HDMI
Auto scan .............................. Yes
AV Link ................................ Yes

Input video
Signal state ........................... Locked
Resolution ............................. 1920x1080p 59.95 Hz
Aspect ................................. 16:9
Total size ............................. 2200x1125
X offset ............................... 192
Y offset ............................... 41
Color space ............................ YUV BT.709
Quantization ........................... Limited
Saturation ............................. Limited

might have to set the video explicitly through ffmpeg ?

[video4linux2,v4l2 0x556e53005e00] Raw : yuyv422 : YUYV 4:2:2 : {48-2048, 1}x{32-2160, 1} [video4linux2,v4l2 0x556e53005e00] Raw : uyvy422 : UYVY 4:2:2 : {48-2048, 1}x{32-2160, 1}
[video4linux2,v4l2 0x556e53005e00] Raw : nv12 : Y/CbCr 4:2:0 : {48-2048, 1}x{32-2160, 1} [video4linux2,v4l2 0x556e53005e00] Raw : yuv420p : Planar YVU 4:2:0 : {48-2048, 1}x{32-2160, 1}
[video4linux2,v4l2 0x556e53005e00] Raw : yuv420p : Planar YUV 4:2:0 : {48-2048, 1}x{32-2160, 1} [video4linux2,v4l2 0x556e53005e00] Raw : rgb24 : 24-bit RGB 8-8-8 : {48-2048, 1}x{32-2160, 1}
[video4linux2,v4l2 0x556e53005e00] Raw : 0rgb : 32-bit A/XRGB 8-8-8-8 : {48-2048, 1}x{32-2160, 1} [video4linux2,v4l2 0x556e53005e00] Raw : bgr24 : 24-bit BGR 8-8-8 : {48-2048, 1}x{32-2160, 1}
[video4linux2,v4l2 0x556e53005e00] Raw : bgr0 : 32-bit BGRA/X 8-8-8-8 : {48-2048, 1}x{32-2160, 1} [video4linux2,v4l2 0x556e53005e00] Raw : gray : 8-bit Greyscale : {48-2048, 1}x{32-2160, 1}
[video4linux2,v4l2 0x556e53005e00] Raw : gray16le : 16-bit Greyscale : {48-2048, 1}x{32-2160, 1} [video4linux2,v4l2 0x556e53005e00] Raw : Unsupported : 32-bit A/XYUV 8-8-8-8 : {48-2048, 1}x{32-2160, 1}
/dev/video0: Immediate exit requested

Replies (18)

RE: magewell pcie pro capture quad HDMI - Added by saen acro over 4 years ago

Format your post¶

Cannot understand why you use this capture card,
with thing that stream is with bigger size then HD resolution.

RE: magewell pcie pro capture quad HDMI - Added by Brian Crawley over 4 years ago

it is the card I have. I would be open to other cards. the manual has an entry for linux using gst-launch in the desktop gui but I would like to use ffmpeg and pipe as it works for the udp stream. I will go through the manuals more.

gst-launch–1.0 v4l2src device=/dev/video0 ! video/x-raw,width=720,height=576,format=RGBx,framerate=30/1 ! videoconvert ! autovideosink

RE: magewell pcie pro capture quad HDMI - Added by saen acro over 4 years ago

tray udpixy
what say

ffprobe

for stream?

RE: magewell pcie pro capture quad HDMI - Added by Brian Crawley over 4 years ago

ffprobe /dev/video0

Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 24877.585720, bitrate: 1491646 kb/s
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1920x1080, 1491646 kb/s, 59.95 fps, 59.95 tbr, 1000k tbn, 1000k tbc

RE: magewell pcie pro capture quad HDMI - Added by saen acro over 4 years ago

Force colorspace there is a difference.

And start to use PRE button for formatting your posts.

RE: magewell pcie pro capture quad HDMI - Added by Brian Crawley over 4 years ago

got video working with 

pipe:////usr/bin/ffmpeg -i /dev/video0 -c:v libx264 -preset ultrafast -qp 0 -f mpegts pipe:1

will read about colorspace filter and how to adjust fps, resolution etc. as each hdmi input will be different I think. 

so ffprobe /dev/video shows the current output of the device while ffmpeg -list_formats all /dev/video0 shows what ffmpeg can read from the device.
would be nice to set output on the card to reduce load on the cpu/ffmpeg but its working. will continue to read the documentation.

will try live video feeds on all 4 HDMI ports from the shop tomorrow and report results

do I have to specify an audio codec or does libx264 do both ? there is no sound on the HDMI feed here

Thanks

RE: magewell pcie pro capture quad HDMI - Added by saen acro over 4 years ago

pipe:////usr/bin/ffmpeg -i /dev/video0 -c:v libx264 -preset ultrafast -qp 0 -f mpegts pipe:1

This PIPE not include audio

it need to be something as

pipe:///usr/bin/ffmpeg -i /dev/video0 -c:v libx264 -preset ultrafast -qp 0 -c:a libfdk_aac -b:a 128k -f mpegts pipe:1

https://trac.ffmpeg.org/wiki/Encode/AAC

RE: magewell pcie pro capture quad HDMI - Added by Brian Crawley over 4 years ago

k, will test as soon as its in the rack at the shop. Thanks

RE: magewell pcie pro capture quad HDMI - Added by Brian Crawley over 4 years ago

well I got the server in the rack and up, stripped the hdcp and the video is going nice. no audio though.

device path     firmware ver    hardware ver    driver ver      alsa name       device name      
/dev/video0     1.32            A               1.3.4068        hw:0,0          00:00 Pro Capture Quad HDMI

Input audio
  Audio format ........................... 48000 Hz, 16 bit, LPCM
  Channel 1 & 2 .......................... Valid

I tried to use alsa device hw:1,0 but there is no such device. i tried to reinstall the drivers no change. there is no audio card in this server. i did install alsa and tools and when i started the mixer it listed 00-00 pro capture card but no sound channels. i sent an email to magewell. 

pipe:////usr/bin/ffmpeg -f alsa -ac 2 -i hw:1,0 -i /dev/video1 -framerate 30 -s 1280:720 -c:v libx264 -preset veryfast -maxrate 4500k -bufsize 9000k -g 60 -c:a libfdk_aac -b:a 128k -f mpegts pipe:1

returns:
ALSA lib pcm_hw.c:1826:(_snd_pcm_hw_open) Invalid value for card
 spawn: [alsa @ 0x560d4a09d180] cannot open audio device hw:1,0 (No such file or directory)
 spawn: hw:1,0: Input/output error
  iptv: stdin pipe unexpectedly closed: No data

when i run arecord -l
null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=HDMI
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
sysdefault:CARD=HDMI
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
dmix:CARD=HDMI,DEV=0
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample mixing device
dsnoop:CARD=HDMI,DEV=0
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample snooping device
hw:CARD=HDMI,DEV=0
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Direct hardware device without any conversions
plughw:CARD=HDMI,DEV=0
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Hardware device with all software conversions
default:CARD=HDMI_1
    00-01 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
sysdefault:CARD=HDMI_1
    00-01 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
dmix:CARD=HDMI_1,DEV=0
    00-01 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample mixing device
dsnoop:CARD=HDMI_1,DEV=0
    00-01 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample snooping device
hw:CARD=HDMI_1,DEV=0
    00-01 Pro Capture Quad HDMI, Pro Capture PCM
    Direct hardware device without any conversions
plughw:CARD=HDMI_1,DEV=0
    00-01 Pro Capture Quad HDMI, Pro Capture PCM
    Hardware device with all software conversions
default:CARD=HDMI_2
    00-02 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
sysdefault:CARD=HDMI_2
    00-02 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
dmix:CARD=HDMI_2,DEV=0
    00-02 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample mixing device
dsnoop:CARD=HDMI_2,DEV=0
    00-02 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample snooping device
hw:CARD=HDMI_2,DEV=0
    00-02 Pro Capture Quad HDMI, Pro Capture PCM
    Direct hardware device without any conversions
plughw:CARD=HDMI_2,DEV=0
    00-02 Pro Capture Quad HDMI, Pro Capture PCM
    Hardware device with all software conversions
default:CARD=HDMI_3
    00-03 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
sysdefault:CARD=HDMI_3
    00-03 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
dmix:CARD=HDMI_3,DEV=0
    00-03 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample mixing device
dsnoop:CARD=HDMI_3,DEV=0
    00-03 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample snooping device
hw:CARD=HDMI_3,DEV=0
    00-03 Pro Capture Quad HDMI, Pro Capture PCM
    Direct hardware device without any conversions
plughw:CARD=HDMI_3,DEV=0
    00-03 Pro Capture Quad HDMI, Pro Capture PCM
    Hardware device with all software conversions

I did try hw:HDMI_1,0 
still no device pipe closes

thanks for your help B

RE: magewell pcie pro capture quad HDMI - Added by saen acro over 4 years ago

Use PRE to text you copy from terminal not to all text

Do you can get working solution any other way under linux with this capture card?

RE: magewell pcie pro capture quad HDMI - Added by Brian Crawley over 4 years ago

in linux I can get the video

Input #0, video4linux2,v4l2, from '/dev/video1':
  Duration: N/A, start: 71939.629989, bitrate: 745823 kb/s
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1920x1080, 745823 kb/s, 29.97 fps, 29.97 tbr, 1000k tbn, 1000k tbc

or I can get the audio

Input #0, alsa, from 'hw:1,0':
  Duration: N/A, start: 1586389697.839621, bitrate: 1536 kb/s
    Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s

in linux on the command line I can get both and the audio/video is in sync too

ffmpeg -f alsa -thread_queue_size 1024 -ac 2 -i hw:0,0 -f video4linux2 -thread_queue_size 1024 -i /dev/video0 -s 1920x1080 -c:v libx264 -x264opts bitrate=2000 -profile:v baseline -preset superfast test1.mp4

in tvheadend i can pipe the video no problem

pipe:////usr/bin/ffmpeg -f video4linux2 -thread_queue_size 1024 -i /dev/video0 -s 1920x1080 -c:v libx264 -x264opts bitrate=2000 -profile:v baseline -preset superfast -f mpegts pipe:1

what I can't do is figure out the syntax/format to pipe both the audio and video together in a watchable stream in tvheadend.
the error is unable to pipe hw:0,0 or hw:0 or hw:HDMI,0 but they all work from the command line.

2020-04-09 18:16:28.721 spawn: ALSA lib pcm_hw.c:1826:(_snd_pcm_hw_open) Invalid value for card
2020-04-09 18:16:28.721 spawn: [alsa @ 0x5581a1861100] cannot open audio device hw:0 (No such file or directory)
2020-04-09 18:16:28.721 spawn: hw:0: Input/output error
2020-04-09 18:16:28.725 iptv: stdin pipe unexpectedly closed: No data

or

2020-04-09 18:30:54.261 spawn: ALSA lib conf.c:4898:(parse_args) Unknown parameter 1
2020-04-09 18:30:54.261 spawn: ALSA lib conf.c:5031:(snd_config_expand) Parse arguments error: No such file or directory
2020-04-09 18:30:54.261 spawn: ALSA lib pcm.c:2564:(snd_pcm_open_noupdate) Unknown PCM hw:HDMI,0
2020-04-09 18:30:54.261 spawn: [alsa @ 0x55f6b1325100] cannot open audio device default:HDMI,0 (No such file or directory)
2020-04-09 18:30:54.261 spawn: hw:HDMI,0: Input/output error
2020-04-09 18:30:54.265 iptv: stdin pipe unexpectedly closed: No data

arecord -l shows

default:CARD=HDMI
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
sysdefault:CARD=HDMI
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Default Audio Device
dmix:CARD=HDMI,DEV=0
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample mixing device
dsnoop:CARD=HDMI,DEV=0
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Direct sample snooping device
hw:CARD=HDMI,DEV=0
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Direct hardware device without any conversions
plughw:CARD=HDMI,DEV=0
    00-00 Pro Capture Quad HDMI, Pro Capture PCM
    Hardware device with all software conversions

why would it work on the command line but not in tvheadend. is it a permission issue ?

thanks

RE: magewell pcie pro capture quad HDMI - Added by saen acro over 4 years ago

Congratulations for your first corectly formated post.

pipe:////usr/bin/ffmpeg -f video4linux2 -thread_queue_size 1024 -i /dev/video0 -s 1920x1080 -c:v libx264 -x264opts bitrate=2000 -profile:v baseline -preset superfast -f mpegts pipe:1

remove extra "/" after pipe://

pipe:///usr/bin/ffmpeg -f video4linux2 -thread_queue_size 1024 -i /dev/video0 -s 1920x1080 -c:v libx264 -x264opts bitrate=2000 -profile:v baseline -preset superfast -f mpegts pipe:1

Try to make bash script with terminal command and pipe to TVH.

read this
https://stackoverflow.com/questions/6311560/how-can-i-capture-audio-and-video-simultenaous-with-ffmpeg-from-a-linux-usb-capt

RE: magewell pcie pro capture quad HDMI - Added by Brian Crawley over 4 years ago

I'm gonna say typo on my part. should have been only 3 /

so i can write a script (4 total 1 each for the hdmi inputs) but I am not sure how to go about this.
I understand pipe to a file but do not want to fill the hard drive.

maybe something like

mkfifo hdmipipe1

pipe:///usr/bin/ffmpeg -f alsa -thread_queue_size 1024 -ac 2 -i hw:0 -f video4linux2 -thread_queue_size 1024 -i /dev/video0 -s 1920x1080 -c:v libx264 -x264opts bitrate=2000 -profile:v baseline -preset superfast -f mpegts hdmipipe1

then from tvheadend

pipe:///usr/bin/ffmpeg -i /dir/of/file/hdmipipe1 -vcodec copy -acodec copy -f mpegts pipe:1

will hdmipipe1 require .ts ?

I'll start reading the pipe manpage. Thanks

RE: magewell pcie pro capture quad HDMI - Added by saen acro over 4 years ago

No need to write anything to hard disk, there is some examples in this forum.

RE: magewell pcie pro capture quad HDMI - Added by Brian Crawley over 4 years ago

Thank you for all the help, including how to post :)
my final syntax was

ffmpeg -hide_banner -loglevel quiet -f alsa -thread_queue_size 1024 -ac 2 -i hw:0,0 -f video4linux2 -thread_queue_size 1024 -i /dev/video0 -s 1080x720 -c:v libx264 -x264opts bitrate=2000 -profile:v baseline -preset superfast -f mpegts /home/of/mkfifo/filename -y

I added the ffmpeg command to the systemd as a .service so it starts with the server and can be checked/restarted with sudo systemctl command
its called in tvheadend with

pipe:///usr/bin/ffmpeg -i /home/of/mkfifo/filename -vcodec copy -acodec copy -f mpegts pipe:1

should the audio be encoded ? the video gets c:v libx264 but dont think anything is done to the audio and it takes along time for the stream to sync and start up

might have to play with -bufsize -minrate and -maxrate but its working. Thanks

RE: magewell pcie pro capture quad HDMI - Added by saen acro over 4 years ago

"poor" command line

add some more parameters
(modeficate to your needs)
this use Nvidia GPU to transcode sd channel

ffmpeg -re -vsync passthrough -copytb 1 \
-hwaccel cuvid -hwaccel_device 0 -probesize 10000000 -analyzeduration 10000000 \
-fflags discardcorrupt+genpts+nobuffer -c:v mpeg2_cuvid -gpu 0 -deint adaptive -drop_second_field 1 -recv_buffer_size 67108864 \
-i alsa -thread_queue_size 1024 -ac 2 -i hw:0,0 -f video4linux2 -thread_queue_size 1024 -i /dev/video0 -s 1080x720 \
-filter_complex [0:i:0x2b4]split=outputs=1[map:v:0] -map [map:v:0] \
-c:v:0 hevc_nvenc -g 150 \
-flags:v +global_header+cgop -preset:v medium \
-profile:v:0 main -gpu 0 -b:v:0 500k -maxrate:v:0 1200k \
-bufsize:v:0 2400k -map 0:i:0x2b5 -c:a:0 libfdk_aac -ac 2 -ar 44100 -b:a:0 96k \
-metadata service_name=HDMI-1 \
-metadata service_provider=Quad-Capture \
-max_muxing_queue_size 512 -f pipe:1
-nostdin -hide_banner -loglevel info

RE: magewell pcie pro capture quad HDMI - Added by Brian Crawley over 4 years ago

Sorry for the delay in responding I was on an outside project for a bit. I'm starting to understand just how many options there are. I am going through

ffmpeg -h full and there is alot. i am reading about -filter_complex and the -map option.

I do not understand [0:i:0x2b4] and then later -map 0:i:0x2b5 are you calling the video input from the graphics card ? -hwaccel_device 0

split(audio and video inputs)=outputs(from audio and video after applied filter)=1(combined stream) ?

I will not use hardware(gpu), just memory and cpu this is a dedicated server for this capture card. Thanks

RE: magewell pcie pro capture quad HDMI - Added by saen acro over 4 years ago

This select exact audio stream remove it you can set this in STB
Video card is lot more potential then cpu for compression
cheapest Intel "i" series gen 2 and gen 3 can compress 8-10 HD channels with QSV, without high cpu load.

(1-18/18)

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