ср, 8 февр. 2023 г., 01:35 Terje J. Hanssen via Cin
<[email protected]>:
Den 02.02.2023 01:46, skrev Terje J. Hanssen:
.......
but I prepare myself to test and use one method left with regards
to "Personal Video Archiving".
Therefore I have ordered two selected, inexpensive devices (the
urls here are just for English language):
1) Capture Card USB HDMI 4K to 1080P USB-C adapter (Speedy USB
3.2/3.1/3.0, 60 Hz and 1080p FHD.)
https://www.turascandinavia.com/en/products/computer/microphone-webcam/webcams/74257
* Fluid video recordings without delays or distortions during
live streaming
* Linux not mentioned, but assumed this is a standard supported
UVC. OBS and VLC is mentioned.
Then the first item, Hama Video Recording Stick, HDMI 4k - USB3.x
is received. It promises:
"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".
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.
But according to Steve Mullen's V1 and FX7 handbook (not mentioned
in the manual):
1. When the camera is operating, the EIP (Enhanced Image
Processor) generates uncompressed 1440x1080i with a 4:2:2
color space. 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.
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
chip downscales 1440 to 1280 while it up-scales 540 to 720.
The result is 720p50 or 720p60, which is output via HDMI.
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.
Did you tried to force specific format (uncompressed) before -i
parameter for ffmpeg?
Someone here that have suggestion to possibly modified syntax or
can verify that the driver doesn't manage this?
Another (setup) problem, there was no audio recorded or heard
during playback!?
In the following I list the test command syntax I've collectedf
and tried with shortened output (yet long):
To explain, I have also another USB 2.0 Webcam connected, beside
the new HDMI-USB3 Videstick.
Verify the devices, drivers and formats:
---------------------------------------
dmesg | tail
[22706.060759] perf: interrupt took too long (2521 > 2500),
lowering kernel.perf_event_max_sample_rate to 79250
[32105.561575] perf: interrupt took too long (3158 > 3151),
lowering kernel.perf_event_max_sample_rate to 63250
[40586.477420] usb 1-5: USB disconnect, device number 2
[40599.099612] usb 1-5: new high-speed USB device number 5 using
xhci_hcd
[40599.250960] usb 1-5: New USB device found, idVendor=534d,
idProduct=2109, bcdDevice=21.00
[40599.250972] usb 1-5: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[40599.250978] usb 1-5: Product: USB Video
[40599.250984] usb 1-5: Manufacturer: MACROSILICON
[40599.252310] usb 1-5: Found UVC 1.00 device USB Video (534d:2109)
[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
-----------------------------
lsusb
Bus 002 Device 003: ID 05e3:0732 Genesys Logic, Inc. All-in-One
Cardreader
Bus 002 Device 002: ID 0bc2:2038 Seagate RSS LLC Expansion HDD
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 001 Device 005: ID 534d:2109 MacroSilicon USB Video
Bus 001 Device 004: ID 0c45:6340 Microdia Camera
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
udevadm info /dev/video* | egrep 'DEVNAME|ID_V4L_PRODUCT'
E: DEVNAME=/dev/video0
E: ID_V4L_PRODUCT=USB Video: USB Video
E: DEVNAME=/dev/video1
E: ID_V4L_PRODUCT=USB Video: USB Video
E: DEVNAME=/dev/video2
E: ID_V4L_PRODUCT=USB 2.0 Camera: HD 720P Webcam
E: DEVNAME=/dev/video3
E: ID_V4L_PRODUCT=USB 2.0 Camera: HD 720P Webcam
lsusb | egrep 'Video|Camera'
Bus 001 Device 005: ID 534d:2109 MacroSilicon USB Video
Bus 001 Device 004: ID 0c45:6340 Microdia Camera
--------------------
ll /dev/video*
crw-rw----+ 1 root video 81, 0 feb. 7 20:22 /dev/video0
crw-rw----+ 1 root video 81, 1 feb. 7 20:22 /dev/video1
crw-rw----+ 1 root video 81, 2 feb. 7 09:05 /dev/video2
crw-rw----+ 1 root video 81, 3 feb. 7 09:05 /dev/video3
-----------------------
v4l2-ctl --list-devices
USB 2.0 Camera: HD 720P Webcam (usb-0000:00:14.0-11):
/dev/video2
/dev/video3
USB Video: USB Video (usb-0000:00:14.0-5):
/dev/video0
/dev/video1
-------------------------
ffmpeg -f v4l2 -list_formats all -i /dev/video0
ffmpeg -hide_banner -f v4l2 -list_formats all -i /dev/video0
[video4linux2,v4l2 @ 0x556cf63570c0] Compressed: mjpeg :
Motion-JPEG : 1920x1080 1600x1200 1360x768 1280x1024 1280x960
1280x720 1024x768 800x600 720x576 720x480 640x480
[video4linux2,v4l2 @ 0x556cf63570c0] Raw : yuyv422
: YUYV 4:2:2 : 1920x1080 1600x1200 1360x768 1280x1024
1280x960 1280x720 1024x768 800x600 720x576 720x480 640x480
/dev/video0: Immediate exit requested
ffmpeg -hide_banner -f v4l2 -list_formats all -i /dev/video1
[video4linux2,v4l2 @ 0x5560c0bc70c0] ioctl(VIDIOC_G_INPUT):
Inappropriate ioctl for device
/dev/video1: Inappropriate ioctl for device
----------------
v4l2-ctl --all
Driver Info (not using libv4l2):
Driver name : uvcvideo
Card type : USB Video: USB Video
Bus info : usb-0000:00:14.0-5
Driver version: 5.14.21
Capabilities : 0x84A00001
Video Capture
Metadata Capture
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04200001
Video Capture
Streaming
Extended Pix Format
Priority: 2
Video input : 0 (Camera 1: ok)
Format Video Capture:
Width/Height : 1920/1080
Pixel Format : 'MJPG'
Field : None
Bytes per Line : 0
Size Image : 4147200
Colorspace : sRGB
Transfer Function : Rec. 709
YCbCr/HSV Encoding: ITU-R 601
Quantization : Default (maps to Full Range)
Flags :
Crop Capability Video Capture:
Bounds : Left 0, Top 0, Width 1920, Height 1080
Default : Left 0, Top 0, Width 1920, Height 1080
Pixel Aspect: 1/1
Selection: crop_default, Left 0, Top 0, Width 1920, Height 1080
Selection: crop_bounds, Left 0, Top 0, Width 1920, Height 1080
Streaming Parameters Video Capture:
Capabilities : timeperframe
Frames per second: 30.000 (30/1)
Read buffers : 0
brightness 0x00980900 (int) : min=-128
max=127 step=1 default=-11 value=-11
contrast 0x00980901 (int) : min=0
max=255 step=1 default=148 value=148
saturation 0x00980902 (int) : min=0
max=255 step=1 default=180 value=180
hue 0x00980903 (int) : min=-128
max=127 step=1 default=0 value=0
-----------------
v4l2-ctl --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
Index : 0
Type : Video Capture
Pixel Format: 'MJPG' (compressed)
Name : Motion-JPEG
Size: Discrete 1920x1080
Interval: Discrete 0.017s (60.000 fps)
Interval: Discrete 0.033s (30.000 fps)
Interval: Discrete 0.040s (25.000 fps)
Interval: Discrete 0.050s (20.000 fps)
Interval: Discrete 0.100s (10.000 fps)
.........
Size: Discrete 1280x720
Interval: Discrete 0.017s (60.000 fps)
Interval: Discrete 0.020s (50.000 fps)
Interval: Discrete 0.033s (30.000 fps)
Interval: Discrete 0.050s (20.000 fps)
Interval: Discrete 0.100s (10.000 fps)
......
Size: Discrete 720x576
Interval: Discrete 0.017s (60.000 fps)
Interval: Discrete 0.020s (50.000 fps)
Interval: Discrete 0.033s (30.000 fps)
Interval: Discrete 0.050s (20.000 fps)
Interval: Discrete 0.100s (10.000 fps)
Index : 1
Type : Video Capture
Pixel Format: 'YUYV'
Name : YUYV 4:2:2
Size: Discrete 1920x1080
Interval: Discrete 0.200s (5.000 fps)
......
Size: Discrete 1280x720
Interval: Discrete 0.100s (10.000 fps)
.......
Size: Discrete 720x576
Interval: Discrete 0.040s (25.000 fps)
Interval: Discrete 0.050s (20.000 fps)
Interval: Discrete 0.100s (10.000 fps)
Interval: Discrete 0.200s (5.000 fps)
.........
Encoding:
--------
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
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
[video4linux2,v4l2 @ 0x559d031190c0] The driver changed the time
per frame from 1/25 to 1/10
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
[video4linux2,v4l2 @ 0x55ce18d060c0] The driver changed the time
per frame from 1/25 to 1/5
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
[video4linux2,v4l2 @ 0x55944900e0c0] The driver changed the time
per frame from 1/25 to 1/5
Recorded test video files and probing formats:
---------------------------------------------
du -sh *
258M 1280x720_ffv1.mkv
292M 1920x1080_ffv1.mkv
1,1G 1920x1080_v210.mkv
61M 720x576_ffv1.mkv
-----------------------------
ffprobe -hide_banner 720x576_ffv1.mkv
Input #0, matroska,webm, from '720x576_ffv1.mkv':
Metadata:
ENCODER : Lavf58.76.100
Duration: 00:00:09.20, start: 0.000000, bitrate: 55385 kb/s
Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv422p(tv,
progressive), 720x576, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
Metadata:
ENCODER : Lavc58.134.100 ffv1
DURATION : 00:00:09.200000000
-----------
ffprobe -hide_banner 1280x720_ffv1.mkv
Input #0, matroska,webm, from '1280x720_ffv1.mkv':
Metadata:
ENCODER : Lavf58.76.100
Duration: 00:00:38.90, start: 0.000000, bitrate: 55512 kb/s
Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv422p(tv,
progressive), 1280x720, 10 fps, 10 tbr, 1k tbn, 1k tbc (default)
Metadata:
ENCODER : Lavc58.134.100 ffv1
DURATION : 00:00:38.900000000
--------------
ffprobe -hide_banner 1920x1080_ffv1.mkv
Input #0, matroska,webm, from '1920x1080_ffv1.mkv':
Metadata:
ENCODER : Lavf58.76.100
Duration: 00:00:53.40, start: 0.000000, bitrate: 45747 kb/s
Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv422p(tv,
progressive), 1920x1080, 5 fps, 5 tbr, 1k tbn, 1k tbc (default)
Metadata:
ENCODER : Lavc58.134.100 ffv1
DURATION : 00:00:53.400000000
----------------
ffprobe -hide_banner 1920x1080_v210.mkv
[matroska,webm @ 0x5563ca6d30c0] Stream #0: not enough frames to
estimate rate; consider increasing probesize
Input #0, matroska,webm, from '1920x1080_v210.mkv':
Metadata:
ENCODER : Lavf58.76.100
Duration: 00:00:41.40, start: 0.000000, bitrate: 221185 kb/s
Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p10le(tv,
progressive), 1920x1080, 5 fps, 1k tbr, 1k tbn, 1k tbc (default)
Metadata:
ENCODER : Lavc58.134.100 v210
DURATION : 00:00:41.400000000
---------------------------
2) Scart AV SV to HDMI Converter Switcher S Video Composite RCA
DVD HD TV adapter (3-4 weeks delivery time
https://www.ebay.com.au/itm/295472602625
* The 3-in-1 S-/video/RCA/SCART to HDMI converter is a
universal converter for analog video input to HDMI output.
* Analog to digital converter (ADC), 10 bits maximum 1,62 MSPS
sampling,
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!?
3.1 FFmpeg recipe (PAL)
ffmpeg -i VIDEO_IN \
-c:v ffv1 -level 3 -coder 1 -context 0 -slices 24
-slicecrc 1 \
-color_primaries bt470bg \
-color_trc bt709 \
-colorspace bt470bg \
-color_range mpeg \
-map 0 \
-top 1 \
-c:a copy \
-g 1 -pix_fmt + \
VIDEO_OUT.mkv
3.2 Reference Example
https://trac.ffmpeg.org/wiki/Encode/FFV1
Copy audio "as-is" and use FFV1.3 as video codec.
Parameters are 8 threads, coder=1, context=1, GOP-size=1, 24
slices and slice-CRC on:
ffmpeg -i <input_video> \
-acodec copy \
-vcodec ffv1 -level 3 \
-threads 8 \
-coder 1 \
-context 1 \
-g 1 \
-slices 24 \
-slicecrc 1 \
<output_video>
3.3 Various Encoding examples for Video capture from USB camera
/dev/video0:
ffmpeg -f v4l2 -framerate 25 -video_size 720x576 -i /dev/video0
output_data.mkv
ffmpeg -f v4l2 -framerate 25 -video_size 720x576 -i /dev/video0
-codec:v ffv1 -codec:a pcm_s16le \
-f matroska output_video.mkv
Check that video is captured properly using ffplay:
ffmpeg -ar 44100 -thread_queue_size 1024 -f alsa -i $AUDIO \
-r 25 -thread_queue_size 1024 -i $VIDEO \
-codec copy -f matroska - | ffplay -
Check the overall flow using ffplay before capturing:
ffmpeg -ar 44100 -thread_queue_size 1024 -f alsa -i $AUDIO \
-itsoffset -0.5 -r 25 -thread_queue_size 1024 -i $VIDEO \
-filter_complex 'channelmap=FL-0' -filter_complex
'crop=w=700:h=556:x=8:y=0' \
-map 1:v -map 0:a -codec:v ffv1 -codec:a pcm_s16le \
-f matroska - | ffplay -
4, Regarding FFV1 lossless compression in realtime
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. This according to a
2012/2015 article, where I have extracted the results for FFV1
v.3 in the tables below:
http://www.av-rd.com/knowhow/video/comparison_video_codecs_containers.html#codec_tests
NOTE: This is a consumer grade, off-the-shelf PC setup.
Hardware:
CPU: Intel(R) QuadCore(TM) i7-2600K CPU @ 3.40GHz
RAM: 8 GB
Disk: Intel SSDSA2CW080G3 (SSD)
Software:
Operating System: GNU/Linux (Xubuntu 12.04.1, 64bit)
Transcoding tool: FFmpeg (version git N-59183-g3e62654, Dec 17
2013)
Video source file: VQEG reference video "football"
<http://media.xiph.org/video/derf/y4m/football_422_ntsc.y4m>
(NTSC-SD, 720x486px, 30fps, yuv422p, 8bpc)
Codec Encoding Decoding Filesize % of
uncompressed
Implementation Details
FFV1
<http://www.av-rd.com/knowhow/video/comparison_video_codecs_containers.html#codec_ffv1>
(version 3) 216 fps 277 fps 111 MiB 46.1%
libavcodec
(FFmpeg) <http://en.wikipedia.org/wiki/Libavcodec> log
<http://www.av-rd.com/knowhow/video/test_results/football-720x486i30/ffv1.3-libavcodec_ffmpeg_avi.log>,
framemd5
<http://www.av-rd.com/knowhow/video/test_results/football-720x486i30/ffv1.3-libavcodec_ffmpeg_avi.framemd5>
Video source file: SVT reference video "park joy"
<http://media.xiph.org/video/derf/y4m/park_joy_1080p50.y4m>
(full-HD/1080p, 1920x1080px, 50fps, yuv420p, 8bpc)
Codec Encoding Decoding Filesize % of
uncompressed
Implementation Details
FFV1
<http://www.av-rd.com/knowhow/video/comparison_video_codecs_containers.html#codec_ffv1>
(version 3) 31 fps 63 fps 879 MiB 57.2% libavcodec
(FFmpeg)
<http://en.wikipedia.org/wiki/Libavcodec> log
<http://www.av-rd.com/knowhow/video/test_results/park_joy-1920x1080p50/ffv1.3-libavcodec_ffmpeg_avi.log>,
framemd5
<http://www.av-rd.com/knowhow/video/test_results/park_joy-1920x1080p50/ffv1.3-libavcodec_ffmpeg_avi.framemd5>
PAL-SD 720x576 stored as YUV422, 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.
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?
5. Related 2021-[Cin] threads as background references
[Cin] hdmi capture card (with v4l2)
https://www.mail-archive.com/[email protected]/msg02865.html
[Cin] offtopic: Digitize and record Video with A/D USB adapters
https://www.mail-archive.com/[email protected]/msg03269.html
[Cin] offtopic: HDMI capture
https://www.mail-archive.com/[email protected]/msg02084.html
[Cin] Is SD and HD 422 Video Capture obtainable with V4L(2)?
https://www.mail-archive.com/[email protected]/msg03719.html
[Cin] Uncompressed video to lossless compression FFV1/MKV
https://www.mail-archive.com/[email protected]/msg03791.html
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