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<div class="moz-cite-prefix">Den 02.02.2023 01:46, skrev Terje J.
Hanssen:<br>
</div>
<blockquote type="cite"
cite="mid:cae6bcf9-3f1a-f978-dfcc-504bf3bc21c5@gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<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"
cite="mid:cae6bcf9-3f1a-f978-dfcc-504bf3bc21c5@gmail.com"><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 class="moz-txt-link-freetext"
href="https://www.turascandinavia.com/en/products/computer/microphone-webcam/webcams/74257"
moz-do-not-send="true">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>
<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>
<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"
cite="mid:cae6bcf9-3f1a-f978-dfcc-504bf3bc21c5@gmail.com">
<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 class="moz-txt-link-freetext"
href="https://www.ebay.com.au/itm/295472602625"
moz-do-not-send="true">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 class="moz-txt-link-freetext"
href="https://trac.ffmpeg.org/wiki/Encode/FFV1"
moz-do-not-send="true">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 class="text-node"><br>
</span></font><font face="Courier New, Courier, monospace"><span
class="text-node">Check the overall flow using ffplay before
capturing:</span> </font>
<div class="language-plaintext highlighter-rouge"
data-pf_style_display="block" data-pf_style_visibility="visible">
<div class="highlight" data-pf_style_display="block"
data-pf_style_visibility="visible"> <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 class="moz-txt-link-freetext"
href="http://www.av-rd.com/knowhow/video/comparison_video_codecs_containers.html#codec_tests"
moz-do-not-send="true">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"
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"
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"
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" 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" 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"
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"
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"
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" 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" 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 class="moz-txt-link-freetext"
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02865.html"
moz-do-not-send="true">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 class="moz-txt-link-freetext"
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03269.html"
moz-do-not-send="true">https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03269.html</a><br>
<br>
[Cin] offtopic: HDMI capture<br>
<a class="moz-txt-link-freetext"
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02084.html"
moz-do-not-send="true">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 class="moz-txt-link-freetext"
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03719.html"
moz-do-not-send="true">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 class="moz-txt-link-freetext"
href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03791.html"
moz-do-not-send="true">https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg03791.html</a><br>
</font> </blockquote>
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