<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<br>
<br>
<div class="moz-cite-prefix">Den 08.02.2023 14:21, skrev Andrew
Randrianasulu:<br>
</div>
<blockquote type="cite"
cite="mid:CA+rFky5-f0czEGRpTdZ-dD_j9mk3f-npNnOPCz=iT+SwtV4O4w@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="auto">
<div><br>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">ср, 8 февр. 2023 г., 14:47
Terje J. Hanssen <<a
href="mailto:terjejhanssen@gmail.com"
moz-do-not-send="true" class="moz-txt-link-freetext">terjejhanssen@gmail.com</a>>:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div> <br>
<br>
<div>Den 08.02.2023 02:38, skrev Andrew Randrianasulu:<br>
</div>
<blockquote type="cite">
<div dir="auto">
<div><br>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">ср, 8 февр.
2023 г., 04:08 Terje J. Hanssen <<a
href="mailto:terjejhanssen@gmail.com"
target="_blank" rel="noreferrer"
moz-do-not-send="true"
class="moz-txt-link-freetext">terjejhanssen@gmail.com</a>>:<br>
</div>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div> <br>
<br>
<div>Den 08.02.2023 00:52, skrev Andrew
Randrianasulu:<br>
</div>
<blockquote type="cite">
<div dir="auto">
<div><br>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">ср,
8 февр. 2023 г., 01:35 Terje J.
Hanssen via Cin <<a
href="mailto:cin@lists.cinelerra-gg.org"
rel="noreferrer noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">cin@lists.cinelerra-gg.org</a>>:<br>
</div>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div> <br>
<br>
<div>Den 02.02.2023 01:46, skrev
Terje J. Hanssen:<br>
</div>
<blockquote type="cite"> <font
face="Courier New, Courier,
monospace"><font
face="Courier New,
Courier, monospace">.......</font></font><font
face="Courier New, Courier,
monospace"><br>
</font></blockquote>
<br>
<blockquote type="cite"><font
face="Courier New, Courier,
monospace"> but I prepare
myself to test and use one
method left with regards to
"Personal Video Archiving".<br>
<br>
Therefore I have ordered two
selected, inexpensive
devices (the urls here are
just for English language):<br>
<br>
1) Capture Card USB HDMI 4K
to 1080P USB-C adapter
(Speedy USB 3.2/3.1/3.0, </font><font
face="Courier New, Courier,
monospace"><font
face="Courier New,
Courier, monospace">60 Hz
and 1080p FHD.</font>)<br>
<a
href="https://www.turascandinavia.com/en/products/computer/microphone-webcam/webcams/74257"
rel="noreferrer noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.turascandinavia.com/en/products/computer/microphone-webcam/webcams/74257</a><br>
</font>
<ul>
<li><font face="Courier New,
Courier, monospace">Fluid
video recordings without
delays or distortions
during live streaming</font></li>
<li><font face="Courier New,
Courier, monospace">Linux
not mentioned, but
assumed this is a
standard supported UVC.
OBS and VLC is
mentioned.</font></li>
</ul>
</blockquote>
<br>
<font face="monospace">Then the
first item, Hama Video
Recording Stick, HDMI 4k -
USB3.x is received. It
promises: <br>
"Fluid video recordings
without delays or distortions
during live streaming, thanks
to a picture frequency of 60
Hz and 1080p with Full HD.
Transform high-quality video
cameras into a high-resolution
USB web camera".<br>
<br>
I have done a quick, first
test using my Sony HDR-FX7E
camera. This is a HDV 1080i
camcorder with MPEG-2 video
compression at 25 mbps on tape
1440x1080, 50i25fps, 4:2:0 and
MP2 stereo audio. Currently
it's cassette deck is broken
and needs repair service. <br>
<br>
But according to Steve
Mullen's V1 and FX7 handbook
(not mentioned in the manual):<br>
</font>
<blockquote><font
face="monospace">1. When the
camera is operating, the EIP
(Enhanced Image Processor)
generates uncompressed
1440x1080i with a 4:2:2
color space. </font><font
face="monospace">Digital
4:2:2 data are output via
the HDMI port while 4:2:2
analog is output via
component-out. Therefore,
you can record 4:2:2 live HD
video from the camera
without MPEG-2 compression.
V1 and FX7 provide an HDMI
output port that carries
uncompressed 4:2:2, 8-bit,
digital video plus
dual-channel, PCM, 16-bit,
48kHz audio When the camera
is running. </font><br>
<br>
<font face="monospace">2. If
you are playing a 1080i50 or
1080i60 HDV tape. The 4:2:0
MPEG-2 is decoded and chroma
up-scaled to a 4:2:2. The
HDMI</font><br>
<font face="monospace">chip
downscales 1440 to 1280
while it up-scales 540 to
720. The result is 720p50 or
720p60, which is output via
HDMI.<br>
</font></blockquote>
<font face="monospace">That is,
I have tested section 1 now,
but see now that I didn't test
1440x1080 resolution. The only
resolution I got to work at 25
fps was 720x576 (SD), while HD
1280x720 and FHD 1920x1080
were set down to 10 fps and 5
fps respectively by the driver
and caused jumpy playback.<br>
</font></div>
</blockquote>
</div>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">Did you tried to force
specific format (uncompressed) before
-i parameter for ffmpeg? </div>
</div>
</blockquote>
<br>
Just "-framerate 25 -video_size 1920x1080"
before -i as repeated in the code as
follows, where I tested to encode to
uncompressed v210 instead of ffv1, but with
no change with regards to low 5 fps:<br>
<br>
ffmpeg -hide_banner -f v4l2 -framerate 25
-video_size 1920x1080 -i /dev/video0
-codec:v v210 -codec:a pcm_s16le -f matroska
1920x1080_v210.mkv<br>
[video4linux2,v4l2 @ 0x55944900e0c0] The
driver changed the time per frame from 1/25
to 1/5<br>
<br>
I also read a related issue and reply to
this post at Superuser, where 1920x1080 was
not supported on the webcam.<br>
<a
href="https://superuser.com/questions/1449252/ffmpeg-captures-from-uvc-dev-video0-in-any-resolution-except-for-1920x1080"
rel="noreferrer noreferrer"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://superuser.com/questions/1449252/ffmpeg-captures-from-uvc-dev-video0-in-any-resolution-except-for-1920x1080</a><br>
<br>
<blockquote type="cite">
<div dir="auto">
<div dir="auto">Also look out for usb2
vs usb3 ports? Shouldn't capture
device hang on bus 002 (usb 3.0) root
hub, instead of bus 001 (usb 2.0 root
hub), from lsusb below?</div>
</div>
</blockquote>
<br>
This may well work better. I have to admit
that I have never studied the difference
between shared usb buses. My thought was to
try to change the connected usb devices, but
tested first the only free usb3 port (blue)
on the add-on frontpanel of the workstation.
The other two usb3 ports are on the
backpanel and are used for the Asus blu-ray
burner and 8TB Seagate expansion video disc.
<br>
<br>
The other usb ports on both panels are usb2
ports, whereof two for the wireless keyboard
and mouse on the fronpanel. What I possibly
already have mentioned before, is that
sometimes if I connect a usb(2) device or
memory to the usb3 port on the frontpanel,
this cause hang on the keyboard or mouse.
But this didn't happend this time with the
USB3 capture stick.<br>
<br>
<blockquote type="cite">
<div dir="auto">
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">
<div class="gmail_quote">
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div><font face="monospace"> <br>
Someone here that have
suggestion to possibly
modified syntax or can verify
that the driver doesn't manage
this?<br>
<br>
Another (setup) problem, there
was no audio recorded or heard
during playback!?<br>
<br>
In the following I list the
test command syntax I've
collectedf and tried with
shortened output (yet long):<br>
To explain, I have also
another USB 2.0 Webcam
connected, beside the new
HDMI-USB3 Videstick.<br>
<br>
Verify the devices, drivers
and formats:<br>
---------------------------------------<br>
dmesg | tail<br>
[22706.060759] perf: interrupt
took too long (2521 >
2500), lowering
kernel.perf_event_max_sample_rate
to 79250<br>
[32105.561575] perf: interrupt
took too long (3158 >
3151), lowering
kernel.perf_event_max_sample_rate
to 63250<br>
[40586.477420] usb 1-5: USB
disconnect, device number 2<br>
[40599.099612] usb 1-5: new
high-speed USB device number 5
using xhci_hcd<br>
[40599.250960] usb 1-5: New
USB device found,
idVendor=534d, idProduct=2109,
bcdDevice=21.00<br>
[40599.250972] usb 1-5: New
USB device strings: Mfr=1,
Product=2, SerialNumber=0<br>
[40599.250978] usb 1-5:
Product: USB Video<br>
[40599.250984] usb 1-5:
Manufacturer: MACROSILICON<br>
[40599.252310] usb 1-5: Found
UVC 1.00 device USB Video
(534d:2109)<br>
[40599.256234] hid-generic
0003:534D:2109.0006:
hiddev96,hidraw0: USB HID
v1.10 Device [MACROSILICON USB
Video] on
usb-0000:00:14.0-5/input4<br>
-----------------------------<br>
<br>
lsusb<br>
Bus 002 Device 003: ID
05e3:0732 Genesys Logic, Inc.
All-in-One Cardreader<br>
Bus 002 Device 002: ID
0bc2:2038 Seagate RSS LLC
Expansion HDD<br>
Bus 002 Device 001: ID
1d6b:0003 Linux Foundation 3.0
root hub<br>
Bus 001 Device 003: ID
046d:c534 Logitech, Inc.
Unifying Receiver<br>
Bus 001 Device 005: ID
534d:2109 MacroSilicon USB
Video<br>
Bus 001 Device 004: ID
0c45:6340 Microdia Camera<br>
Bus 001 Device 001: ID
1d6b:0002 Linux Foundation 2.0
root hub<br>
<br>
<br>
udevadm info /dev/video* |
egrep 'DEVNAME|ID_V4L_PRODUCT'<br>
E: DEVNAME=/dev/video0<br>
E: ID_V4L_PRODUCT=USB Video:
USB Video<br>
E: DEVNAME=/dev/video1<br>
E: ID_V4L_PRODUCT=USB Video:
USB Video<br>
E: DEVNAME=/dev/video2<br>
E: ID_V4L_PRODUCT=USB 2.0
Camera: HD 720P Webcam<br>
E: DEVNAME=/dev/video3<br>
E: ID_V4L_PRODUCT=USB 2.0
Camera: HD 720P Webcam<br>
<br>
lsusb | egrep 'Video|Camera'<br>
Bus 001 Device 005: ID
534d:2109 MacroSilicon USB
Video<br>
Bus 001 Device 004: ID
0c45:6340 Microdia Camera<br>
<br>
--------------------<br>
<br>
ll /dev/video*<br>
crw-rw----+ 1 root video 81, 0
feb. 7 20:22 /dev/video0<br>
crw-rw----+ 1 root video 81, 1
feb. 7 20:22 /dev/video1<br>
crw-rw----+ 1 root video 81, 2
feb. 7 09:05 /dev/video2<br>
crw-rw----+ 1 root video 81, 3
feb. 7 09:05 /dev/video3<br>
<br>
-----------------------<br>
<br>
v4l2-ctl --list-devices<br>
USB 2.0 Camera: HD 720P Webcam
(usb-0000:00:14.0-11):<br>
/dev/video2<br>
/dev/video3<br>
<br>
USB Video: USB Video
(usb-0000:00:14.0-5):<br>
/dev/video0<br>
/dev/video1<br>
<br>
-------------------------<br>
<br>
ffmpeg -f v4l2 -list_formats
all -i /dev/video0<br>
ffmpeg -hide_banner -f v4l2
-list_formats all -i
/dev/video0<br>
[video4linux2,v4l2 @
0x556cf63570c0]
Compressed: mjpeg
: Motion-JPEG :
1920x1080 1600x1200 1360x768
1280x1024 1280x960 1280x720
1024x768 800x600 720x576
720x480 640x480<br>
[video4linux2,v4l2 @
0x556cf63570c0] Raw
: yuyv422 : YUYV
4:2:2 : 1920x1080 1600x1200
1360x768 1280x1024 1280x960
1280x720 1024x768 800x600
720x576 720x480 640x480<br>
/dev/video0: Immediate exit
requested<br>
<br>
ffmpeg -hide_banner -f v4l2
-list_formats all -i
/dev/video1<br>
[video4linux2,v4l2 @
0x5560c0bc70c0]
ioctl(VIDIOC_G_INPUT):
Inappropriate ioctl for device<br>
/dev/video1: Inappropriate
ioctl for device<br>
----------------<br>
<br>
v4l2-ctl --all<br>
Driver Info (not using
libv4l2):<br>
Driver name :
uvcvideo<br>
Card type : USB
Video: USB Video<br>
Bus info :
usb-0000:00:14.0-5<br>
Driver version:
5.14.21<br>
Capabilities :
0x84A00001<br>
Video Capture<br>
Metadata
Capture<br>
Streaming<br>
Extended Pix
Format<br>
Device
Capabilities<br>
Device Caps :
0x04200001<br>
Video Capture<br>
Streaming<br>
Extended Pix
Format<br>
Priority: 2<br>
Video input : 0 (Camera 1: ok)<br>
Format Video Capture:<br>
Width/Height :
1920/1080<br>
Pixel Format :
'MJPG'<br>
Field :
None<br>
Bytes per Line : 0<br>
Size Image :
4147200<br>
Colorspace :
sRGB<br>
Transfer Function :
Rec. 709<br>
YCbCr/HSV Encoding:
ITU-R 601<br>
Quantization :
Default (maps to Full Range)<br>
Flags : <br>
Crop Capability Video Capture:<br>
Bounds : Left 0,
Top 0, Width 1920, Height 1080<br>
Default : Left 0,
Top 0, Width 1920, Height 1080<br>
Pixel Aspect: 1/1<br>
Selection: crop_default, Left
0, Top 0, Width 1920, Height
1080<br>
Selection: crop_bounds, Left
0, Top 0, Width 1920, Height
1080<br>
Streaming Parameters Video
Capture:<br>
Capabilities :
timeperframe<br>
Frames per second:
30.000 (30/1)<br>
Read buffers : 0<br>
brightness 0x00980900 (int)
: min=-128 max=127 step=1
default=-11 value=-11<br>
contrast 0x00980901 (int) :
min=0 max=255 step=1
default=148 value=148<br>
saturation 0x00980902 (int)
: min=0 max=255 step=1
default=180 value=180<br>
hue 0x00980903 (int) :
min=-128 max=127 step=1
default=0 value=0<br>
<br>
-----------------<br>
<br>
v4l2-ctl --list-formats-ext<br>
ioctl: VIDIOC_ENUM_FMT<br>
Index : 0<br>
Type : Video
Capture<br>
Pixel Format: 'MJPG'
(compressed)<br>
Name :
Motion-JPEG<br>
Size: Discrete
1920x1080<br>
Interval: Discrete 0.017s
(60.000 fps)<br>
Interval: Discrete 0.033s
(30.000 fps)<br>
Interval: Discrete 0.040s
(25.000 fps)<br>
Interval: Discrete 0.050s
(20.000 fps)<br>
Interval: Discrete 0.100s
(10.000 fps)<br>
.........<br>
Size: Discrete
1280x720<br>
Interval: Discrete 0.017s
(60.000 fps)<br>
Interval: Discrete 0.020s
(50.000 fps)<br>
Interval: Discrete 0.033s
(30.000 fps)<br>
Interval: Discrete 0.050s
(20.000 fps)<br>
Interval: Discrete 0.100s
(10.000 fps)<br>
......<br>
Size: Discrete
720x576<br>
Interval: Discrete 0.017s
(60.000 fps)<br>
Interval: Discrete 0.020s
(50.000 fps)<br>
Interval: Discrete 0.033s
(30.000 fps)<br>
Interval: Discrete 0.050s
(20.000 fps)<br>
Interval: Discrete 0.100s
(10.000 fps)<br>
</font></div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">well, it seems we know by now why
this device was ...unexpensive.</div>
</div>
</blockquote>
<br>
Yes, I have a "90-days open order" and will start to
search for another, better UVC video capture device.<br>
The problem is the lack of definitive specifications,
compared with my proprietary BMD devices.<br>
<br>
<blockquote type="cite">
<div dir="auto">
<div dir="auto"><br>
</div>
<div dir="auto">it really seems to report only 5-10
fps at fullHD uncompresed, anything bigger is
mjpeg ...</div>
</div>
</blockquote>
<br>
Type : Video Capture<br>
Pixel Format: 'YUYV'<br>
Name : YUYV 4:2:2<br>
Size: Discrete 1920x1080<br>
Interval: Discrete 0.200s (5.000
fps)<br>
<br>
This can absolutely not be what they promote as:<br>
<font face="monospace">"Fluid video recordings without
delays or distortions during live streaming, thanks to
a picture frequency of 60 Hz and 1080p with Full HD".</font><br>
<br>
<blockquote type="cite">
<div dir="auto"><br>
<div dir="auto"><a
href="https://superuser.com/questions/1449252/ffmpeg-captures-from-uvc-dev-video0-in-any-resolution-except-for-1920x1080"
target="_blank" rel="noreferrer"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://superuser.com/questions/1449252/ffmpeg-captures-from-uvc-dev-video0-in-any-resolution-except-for-1920x1080</a><br>
</div>
</div>
</blockquote>
<br>
I also tried that link's suggested syntax<br>
<pre><code>ffmpeg -y -t 15 -f video4linux2 -video_size 1920x1080 -input_format nv12 -timestamps abs -use_libv4l2 1 -i /dev/video0 out.mov</code>
</pre>
but it didn't work for me, just quitted ffmpeg with<br>
<blockquote><font face="monospace">Unrecognized option
'timestamps'.</font><br>
<font face="monospace">Error splitting the argument
list: Option not found</font><br>
</blockquote>
Looking at ffmpeg man pages at <a
href="https://manpages.org/ffmpeg/1" target="_blank"
rel="noreferrer" moz-do-not-send="true"
class="moz-txt-link-freetext">https://manpages.org/ffmpeg/1</a>
there also is a similar video4linux2 syntax example<br>
<blockquote><font face="monospace">Grab and record the
input of a video4linux2 device, leave the frame rate
and size as previously set:</font><br>
<font face="monospace">ffmpeg -f video4linux2
-input_format mjpeg -i /dev/video0 out.mpeg</font><br>
</blockquote>
<ul>
<li><font face="monospace">video_size</font></li>
<li><font face="monospace"> Set the video frame
size. The argument must be a string in the form
WIDTHxHEIGHT or a valid size abbreviation. </font></li>
<li><font face="monospace">pixel_format</font></li>
<li><font face="monospace"> Select the pixel format
(only valid for raw video input). </font></li>
<li><font face="monospace">input_format</font></li>
<li><font face="monospace"> Set the preferred pixel
format (for raw video) or a codec name. This
option allows one to select the input format, when
several are available. </font></li>
</ul>
But what should be set as input_format in this case?<br>
<br>
</div>
</blockquote>
</div>
</div>
<div dir="auto"><br>
</div>
<div dir="auto"><span
style="color:rgb(80,0,80);font-size:12.8px">YUYV ?
(lowercase)</span><br>
</div>
</div>
</blockquote>
<font face="Courier New, Courier, monospace"><br>
<span style="color:#000000;background-color:#ffffff;">ffmpeg
-hide_banner -f video4linux2 -input_format yuyv -i /dev/video0
out.mkv
</span><br>
<span style="color:#ff5fff;background-color:#000000;">[video4linux2,v4l2
@ 0x55b25017e0c0] </span><span
style="color:#ff0000;background-color:#000000;">No such input
format: yuyv.</span><span
style="color:#000000;background-color:#ffffff;">
</span><br>
<span style="color:#ff0000;background-color:#000000;">/dev/video0:
Invalid argument </span><br>
</font><br>
<br>
<br>
<br>
<blockquote type="cite"
cite="mid:CA+rFky5-f0czEGRpTdZ-dD_j9mk3f-npNnOPCz=iT+SwtV4O4w@mail.gmail.com">
<div dir="auto">
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><br>
<br>
<blockquote type="cite">
<div dir="auto">
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div>
<blockquote type="cite">
<div dir="auto">
<div dir="auto">
<div class="gmail_quote">
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div><font face="monospace">
<br>
Index : 1<br>
Type : Video
Capture<br>
Pixel Format: 'YUYV'<br>
Name : YUYV
4:2:2<br>
Size: Discrete
1920x1080<br>
Interval: Discrete 0.200s
(5.000 fps)<br>
......<br>
Size: Discrete
1280x720<br>
Interval: Discrete 0.100s
(10.000 fps)<br>
.......<br>
Size: Discrete
720x576<br>
Interval: Discrete 0.040s
(25.000 fps)<br>
Interval: Discrete 0.050s
(20.000 fps)<br>
Interval: Discrete 0.100s
(10.000 fps)<br>
Interval: Discrete 0.200s
(5.000 fps)<br>
.........<br>
<br>
Encoding:<br>
--------<br>
ffmpeg -hide_banner -f v4l2
-framerate 25 -video_size
720x576 -i /dev/video0
-codec:v ffv1 -codec:a
pcm_s16le -f matroska
720x576_ffv1.mkv<br>
<br>
ffmpeg -hide_banner -f v4l2
-framerate 25 -video_size
1280x720 -i /dev/video0
-codec:v ffv1 -codec:a
pcm_s16le -f matroska
1280x720_ffv1.mkv<br>
[video4linux2,v4l2 @
0x559d031190c0] The driver
changed the time per frame
from 1/25 to 1/10<br>
<br>
ffmpeg -hide_banner -f v4l2
-framerate 25 -video_size
1920x1080 -i /dev/video0
-codec:v ffv1 -codec:a
pcm_s16le -f matroska
1920x1080_ffv1.mkv<br>
[video4linux2,v4l2 @
0x55ce18d060c0] The driver
changed the time per frame
from 1/25 to 1/5<br>
<br>
ffmpeg -hide_banner -f v4l2
-framerate 25 -video_size
1920x1080 -i /dev/video0
-codec:v v210 -codec:a
pcm_s16le -f matroska
1920x1080_v210.mkv<br>
[video4linux2,v4l2 @
0x55944900e0c0] The driver
changed the time per frame
from 1/25 to 1/5<br>
<br>
<br>
Recorded test video files and
probing formats:<br>
---------------------------------------------<br>
<br>
du -sh *<br>
258M 1280x720_ffv1.mkv<br>
292M 1920x1080_ffv1.mkv<br>
1,1G 1920x1080_v210.mkv<br>
61M 720x576_ffv1.mkv<br>
-----------------------------<br>
<br>
<br>
ffprobe -hide_banner
720x576_ffv1.mkv<br>
Input #0, matroska,webm, from
'720x576_ffv1.mkv':<br>
Metadata:<br>
ENCODER :
Lavf58.76.100<br>
Duration: 00:00:09.20,
start: 0.000000, bitrate:
55385 kb/s<br>
Stream #0:0: Video: ffv1
(FFV1 / 0x31564646),
yuv422p(tv, progressive),
720x576, 25 fps, 25 tbr, 1k
tbn, 1k tbc (default)<br>
Metadata:<br>
ENCODER :
Lavc58.134.100 ffv1<br>
DURATION :
00:00:09.200000000<br>
-----------<br>
<br>
ffprobe -hide_banner
1280x720_ffv1.mkv<br>
Input #0, matroska,webm, from
'1280x720_ffv1.mkv':<br>
Metadata:<br>
ENCODER :
Lavf58.76.100<br>
Duration: 00:00:38.90,
start: 0.000000, bitrate:
55512 kb/s<br>
Stream #0:0: Video: ffv1
(FFV1 / 0x31564646),
yuv422p(tv, progressive),
1280x720, 10 fps, 10 tbr, 1k
tbn, 1k tbc (default)<br>
Metadata:<br>
ENCODER :
Lavc58.134.100 ffv1<br>
DURATION :
00:00:38.900000000<br>
--------------<br>
<br>
ffprobe -hide_banner
1920x1080_ffv1.mkv<br>
Input #0, matroska,webm, from
'1920x1080_ffv1.mkv':<br>
Metadata:<br>
ENCODER :
Lavf58.76.100<br>
Duration: 00:00:53.40,
start: 0.000000, bitrate:
45747 kb/s<br>
Stream #0:0: Video: ffv1
(FFV1 / 0x31564646),
yuv422p(tv, progressive),
1920x1080, 5 fps, 5 tbr, 1k
tbn, 1k tbc (default)<br>
Metadata:<br>
ENCODER :
Lavc58.134.100 ffv1<br>
DURATION :
00:00:53.400000000<br>
----------------<br>
<br>
ffprobe -hide_banner
1920x1080_v210.mkv<br>
[matroska,webm @
0x5563ca6d30c0] Stream #0: not
enough frames to estimate
rate; consider increasing
probesize<br>
Input #0, matroska,webm, from
'1920x1080_v210.mkv':<br>
Metadata:<br>
ENCODER :
Lavf58.76.100<br>
Duration: 00:00:41.40,
start: 0.000000, bitrate:
221185 kb/s<br>
Stream #0:0: Video: v210
(v210 / 0x30313276),
yuv422p10le(tv, progressive),
1920x1080, 5 fps, 1k tbr, 1k
tbn, 1k tbc (default)<br>
Metadata:<br>
ENCODER :
Lavc58.134.100 v210<br>
DURATION :
00:00:41.400000000<br>
<br>
---------------------------<br>
<br>
</font><br>
<blockquote type="cite">
<ul>
</ul>
<font face="Courier New,
Courier, monospace"><br>
2) Scart AV SV to HDMI
Converter Switcher S Video
Composite RCA DVD HD TV
adapter (3-4 weeks delivery
time <br>
<a
href="https://www.ebay.com.au/itm/295472602625"
rel="noreferrer noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.ebay.com.au/itm/295472602625</a><br>
</font>
<ul>
<li><font face="Courier New,
Courier, monospace">The
3-in-1
S-/video/RCA/SCART to
HDMI converter is a
universal converter for
analog video input to
HDMI output. </font></li>
<li><font face="Courier New,
Courier, monospace">Analog
to digital converter
(ADC), 10 bits maximum
1,62 MSPS sampling, </font></li>
</ul>
<font face="Courier New,
Courier, monospace"><br>
<br>
Q I have not yet found a
definitiv ffmpeg FFV1 v 3
syntax guide for SD and HDV
capturing and hope for
suggestions and comments
here!?<br>
<br>
3.1 FFmpeg recipe (PAL)<br>
</font>
<blockquote><font
face="Courier New,
Courier, monospace">ffmpeg
-i VIDEO_IN \</font><br>
<blockquote><font
face="Courier New,
Courier, monospace">-c:v
ffv1 -level 3 -coder 1
-context 0 -slices 24
-slicecrc 1 \</font><br>
<font face="Courier New,
Courier, monospace">-color_primaries
bt470bg \</font><br>
<font face="Courier New,
Courier, monospace">-color_trc
bt709 \</font><br>
<font face="Courier New,
Courier, monospace">-colorspace
bt470bg \</font><br>
<font face="Courier New,
Courier, monospace">-color_range
mpeg \</font><br>
<font face="Courier New,
Courier, monospace">-map
0 \</font><br>
<font face="Courier New,
Courier, monospace">-top
1 \</font><br>
<font face="Courier New,
Courier, monospace">-c:a
copy \</font><br>
<font face="Courier New,
Courier, monospace">-g 1
-pix_fmt + \</font><br>
<font face="Courier New,
Courier, monospace">VIDEO_OUT.mkv</font><br>
</blockquote>
</blockquote>
<font face="Courier New,
Courier, monospace"><br>
3.2 Reference Example<br>
<a
href="https://trac.ffmpeg.org/wiki/Encode/FFV1"
rel="noreferrer noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://trac.ffmpeg.org/wiki/Encode/FFV1</a><br>
<br>
Copy audio "as-is" and
use FFV1.3 as video codec. <br>
<br>
Parameters are 8
threads, coder=1, context=1,
GOP-size=1, 24 slices and
slice-CRC on:<br>
<br>
ffmpeg -i
<input_video> \<br>
-acodec
copy \<br>
-vcodec ffv1
-level 3 \<br>
-threads
8 \<br>
-coder
1 \<br>
-context
1 \<br>
-g
1 \<br>
-slices
24 \<br>
-slicecrc
1 \<br>
<output_video><br>
<br>
<br>
3.3 Various Encoding
examples for Video capture
from USB camera /dev/video0:<br>
<br>
ffmpeg -f v4l2 -framerate 25
-video_size 720x576 -i
/dev/video0 output_data.mkv<br>
<br>
ffmpeg -f v4l2 -framerate 25
-video_size 720x576 -i
/dev/video0 -codec:v ffv1
-codec:a pcm_s16le \<br>
-f matroska
output_video.mkv<br>
<br>
Check that video is captured
properly using ffplay:<br>
<br>
ffmpeg -ar 44100
-thread_queue_size 1024 -f
alsa -i $AUDIO \<br>
-r 25 -thread_queue_size
1024 -i $VIDEO \<br>
-codec copy -f matroska
- | ffplay -<br>
</font><font face="Courier"><span><br>
</span></font><font
face="Courier New, Courier,
monospace"><span>Check the
overall flow using ffplay
before capturing:</span> </font>
<div>
<div> <br>
</div>
</div>
<font face="Courier New,
Courier, monospace">ffmpeg
-ar 44100 -thread_queue_size
1024 -f alsa -i $AUDIO \<br>
-itsoffset -0.5 -r 25
-thread_queue_size 1024 -i
$VIDEO \<br>
-filter_complex
'channelmap=FL-0'
-filter_complex
'crop=w=700:h=556:x=8:y=0' \<br>
-map 1:v -map 0:a
-codec:v ffv1 -codec:a
pcm_s16le \<br>
-f matroska - | ffplay
-<br>
<br>
<br>
<br>
4, Regarding FFV1 lossless
compression in realtime<br>
</font><font face="Courier
New, Courier, monospace"><font
face="Courier New,
Courier, monospace">Comparison
tests (2013/2015) have
shown that FFV1 produced
the smallest files at the
fastest speed. It can be
used to capture SD
material in realtime, and
HD possibly, too. </font></font><font
face="Courier New, Courier,
monospace"><font
face="Courier New,
Courier, monospace"><font
face="Courier New,
Courier, monospace">This
according to a 2012/2015
article, where I have
extracted the results
for FFV1 v.3 in the
tables below:<br>
<br>
<a
href="http://www.av-rd.com/knowhow/video/comparison_video_codecs_containers.html#codec_tests"
rel="noreferrer
noreferrer noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">http://www.av-rd.com/knowhow/video/comparison_video_codecs_containers.html#codec_tests</a><br>
</font> </font></font>
NOTE: This is a consumer
grade, off-the-shelf PC setup.<br>
<br>
<table>
<tbody>
<tr>
<th colspan="2">Hardware:</th>
</tr>
<tr>
<td>CPU:</td>
<td>Intel(R)
QuadCore(TM) i7-2600K
CPU @ 3.40GHz</td>
</tr>
<tr>
<td>RAM:</td>
<td>8 GB</td>
</tr>
<tr>
<td>Disk:</td>
<td>Intel SSDSA2CW080G3
(SSD)</td>
</tr>
<tr>
<th colspan="2">Software:</th>
</tr>
<tr>
<td>Operating System:</td>
<td>GNU/Linux (Xubuntu
12.04.1, 64bit)</td>
</tr>
<tr>
<td>Transcoding tool:</td>
<td>FFmpeg (version git
N-59183-g3e62654, Dec
17 2013)</td>
</tr>
</tbody>
</table>
<br>
<table>
<tbody>
<tr>
<td>Video source file:</td>
<td colspan="6"> <a
href="http://media.xiph.org/video/derf/y4m/football_422_ntsc.y4m"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">VQEG
reference video
"football"</a>
(NTSC-SD, 720x486px,
30fps, yuv422p, 8bpc)
</td>
</tr>
<tr>
<th>Codec</th>
<th>Encoding</th>
<th>Decoding</th>
<th>Filesize</th>
<th>% of uncompressed</th>
<th>Implementation</th>
<th>Details</th>
</tr>
<tr>
<td><a
href="http://www.av-rd.com/knowhow/video/comparison_video_codecs_containers.html#codec_ffv1"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">FFV1</a>
(version 3)</td>
<td>216 fps</td>
<td>277 fps</td>
<td>111 MiB</td>
<td>46.1%</td>
<td><a
href="http://en.wikipedia.org/wiki/Libavcodec"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">libavcodec
(FFmpeg)</a></td>
<td> <a
href="http://www.av-rd.com/knowhow/video/test_results/football-720x486i30/ffv1.3-libavcodec_ffmpeg_avi.log"
type="text/plain"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">log</a>,
<a
href="http://www.av-rd.com/knowhow/video/test_results/football-720x486i30/ffv1.3-libavcodec_ffmpeg_avi.framemd5"
type="text/plain"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">framemd5</a></td>
</tr>
</tbody>
</table>
<font face="Courier New,
Courier, monospace"> <br>
</font><br>
<table>
<tbody>
<tr>
<td>Video source file:</td>
<td colspan="6"> <a
href="http://media.xiph.org/video/derf/y4m/park_joy_1080p50.y4m"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">SVT
reference video
"park joy"</a>
(full-HD/1080p,
1920x1080px, 50fps,
yuv420p, 8bpc) </td>
</tr>
<tr>
<th>Codec</th>
<th>Encoding</th>
<th>Decoding</th>
<th>Filesize</th>
<th>% of uncompressed</th>
<th>Implementation</th>
<th>Details</th>
</tr>
<tr>
<td><a
href="http://www.av-rd.com/knowhow/video/comparison_video_codecs_containers.html#codec_ffv1"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">FFV1</a>
(version 3)</td>
<td>31 fps</td>
<td>63 fps</td>
<td>879 MiB</td>
<td>57.2%</td>
<td><a
href="http://en.wikipedia.org/wiki/Libavcodec"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">libavcodec
(FFmpeg)</a></td>
<td> <a
href="http://www.av-rd.com/knowhow/video/test_results/park_joy-1920x1080p50/ffv1.3-libavcodec_ffmpeg_avi.log"
type="text/plain"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">log</a>,
<a
href="http://www.av-rd.com/knowhow/video/test_results/park_joy-1920x1080p50/ffv1.3-libavcodec_ffmpeg_avi.framemd5"
type="text/plain"
rel="noreferrer
noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true">framemd5</a></td>
</tr>
</tbody>
</table>
<font face="Courier New,
Courier, monospace"> <br>
<br>
</font><br>
<font face="Courier New,
Courier, monospace"><font
face="Courier New,
Courier, monospace"><font
face="Courier New,
Courier, monospace"><font
face="Courier New,
Courier, monospace">PAL-SD
720x576 </font><font
face="Courier New,
Courier, monospace">stored
as YUV422</font><font
face="Courier New,
Courier, monospace">,
10 bpc (bits per
component), instead of
the tested 8 bpc
above, seems to me
would have enlarged
the the filesizes with
about 25%, or to about
40 GB/hr with FFV1
lossless compressed. </font></font></font><br>
<br>
Although the FFV1
compression results above
obviously used yuv422p, 8bps
source SD and FHD files as
input, it seems for me that
the encoding speeds at 216
fps and 31 fps for SD and
FHD respectively, assumingly
should manage realtime FFV1
encoding and streaming of
PAL SD and HDV at 25 fps as
well, especially with a
faster i7-6700 x 8 cpu.
Comments here?<br>
<br>
<br>
5. Related 2021-[Cin]
threads as background
references<br>
<br>
[Cin] hdmi capture card
(with v4l2)<br>
<a
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02865.html"
rel="noreferrer noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02865.html</a><br>
<br>
[Cin] offtopic: Digitize and
record Video with A/D USB
adapters<br>
<a
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03269.html"
rel="noreferrer noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03269.html</a><br>
<br>
[Cin] offtopic: HDMI capture<br>
<a
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02084.html"
rel="noreferrer noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02084.html</a><br>
<br>
[Cin] Is SD and HD 422 Video
Capture obtainable with
V4L(2)?<br>
<a
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03719.html"
rel="noreferrer noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03719.html</a><br>
<br>
[Cin] Uncompressed video to
lossless compression
FFV1/MKV<br>
<a
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03791.html"
rel="noreferrer noreferrer
noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03791.html</a><br>
</font> </blockquote>
<br>
</div>
-- <br>
Cin mailing list<br>
<a
href="mailto:Cin@lists.cinelerra-gg.org"
rel="noreferrer noreferrer
noreferrer" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">Cin@lists.cinelerra-gg.org</a><br>
<a
href="https://lists.cinelerra-gg.org/mailman/listinfo/cin"
rel="noreferrer noreferrer
noreferrer noreferrer"
target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://lists.cinelerra-gg.org/mailman/listinfo/cin</a><br>
</blockquote>
</div>
</div>
</div>
</blockquote>
<br>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
<br>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
<br>
</body>
</html>