Am 04.01.2022 um 18:04 schrieb Hanna Frangiyyeh:
Hi Michael;
Sorry I'm a novice to ffmpeg, is there a way to do it in one command pass.
Also, do you have command that you can share?
Here is an example:
rem Make a short test video with alpha channel
ffmpeg -f lavfi -i testsrc2=s=1920x1080:d=3
Am 04.01.2022 um 21:23 schrieb Michael Koch:
Am 04.01.2022 um 21:12 schrieb Hanna Frangiyyeh:
Hi Guys;
I'm new to ffmpeg and I'm trying to figure out what is wrong with the
below
filter. It keep erroring out with the following error:
Unable to find a suitable output format fo
Am 04.01.2022 um 22:26 schrieb Hanna Frangiyyeh:
Ok, I added the commas, now I have the following error:
PS D:\TEMP\Source Files\Audio>
D:\Apps\AudioRendering\AudioRendering\AudioRendering\ffmpeg.exe -i
"D:\TEMP\Source Files
\720E\MLB21_INT_PLAYER_720.mov" -i "D:\TEMP\Source
Files\Audio\file_exa
Hello,
when I use the -s option in this command line
ffplay -noborder -s vga -left 0 -top 200 udp://239.0.0.1:1234
then I get this error message:
"Option -s is deprecated, use -video_size. Option video_size not found."
When I use the -video_size option
ffplay -noborder -video_size vga -left
Am 05.01.2022 um 13:22 schrieb Gyan Doshi:
On 2022-01-05 04:23 pm, Michael Koch wrote:
Hello,
when I use the -s option in this command line
ffplay -noborder -s vga -left 0 -top 200 udp://239.0.0.1:1234
then I get this error message:
"Option -s is deprecated, use -video_size. O
Hello,
I have a question about the sdl output device. If I have a (Windows)
computer with two or more monitors, is it somehow possible to play a
video fullscreen (without borders) but only on one monitor? Or does
"fullscreen" always mean that the whole desktop is used? I know that I
can speci
Am 05.01.2022 um 20:43 schrieb Michael Koch:
Hello,
I have a question about the sdl output device. If I have a (Windows)
computer with two or more monitors, is it somehow possible to play a
video fullscreen (without borders) but only on one monitor? Or does
"fullscreen" always mea
Hello,
in the following example I'm grabbing an equirectangular video from the
desktop, convert it to 180° fisheye format and then use the sdl output
device to show the output on a second monitor in realtime. It's working
as expected but there is one thing I don't understand. At the end of the
Am 09.01.2022 um 11:11 schrieb Carl Eugen Hoyos:
Am Fr., 7. Jan. 2022 um 22:16 Uhr schrieb Michael Koch
:
At the end of the
filter chain I had to insert "format=bgra". It doesn't work if I use
rgb24 or bgrp or no format at all.
Why does the sdl output device need a
pixel fo
Am 09.01.2022 um 11:43 schrieb MacFH - C E Macfarlane - News:
On 08/01/2022 23:43, amindfv--- via ffmpeg-user wrote:
On Sat, Jan 08, 2022 at 08:20:46PM +, MacFH - C E Macfarlane -
News wrote:
To select parts of a video, I use ...
FFMPEG -ss -i -codec copy -to
... however it's tedio
Am 09.01.2022 um 18:14 schrieb Steven Kan:
I’m a little late to this party, and it’s not strictly an ffmpeg solution, but
have a look at Lossless Cut:
https://mifi.no/losslesscut/
It does exactly what you want, graphically, with the option to cut at key
frames (or not),
Are you sure? I saw
Am 09.01.2022 um 21:12 schrieb Steven Kan:
On Jan 9, 2022, at 9:28 AM, Michael Koch wrote:
Am 09.01.2022 um 18:14 schrieb Steven Kan:
I’m a little late to this party, and it’s not strictly an ffmpeg solution, but
have a look at Lossless Cut:
https://mifi.no/losslesscut/
It does exactly
Hello,
I have a projector with a 180° fisheye lens in a dome. Things are easy
if the lens is at the center of the dome. Any input format can be
transformed to fisheye output with the v360 filter. But things are
getting complicated when the lens isn't at the dome's center. Let's
assume the dom
Am 12.01.2022 um 19:00 schrieb Paul B Mahol:
On Wed, Jan 12, 2022 at 5:00 PM Michael Koch
wrote:
Hello,
I have a projector with a 180° fisheye lens in a dome. Things are easy
if the lens is at the center of the dome. Any input format can be
transformed to fisheye output with the v360 filter
There is a rounding or +-1 error in the v360 filter when converting from
double_fisheye to equirectangular. The error is visible with or without
interpolation. Can be reproduced as follows:
ffmpeg -f lavfi -i color=black:s=160x80 -lavfi
geq=r='255*mod(trunc(4*X/W),2)':g='255*trunc(2*X/W)':b='2
Hello,
is it possible to watch a folder for new images (like fileSystemWatcher
in C#), and if a new image appears, then load it in FFmpeg? The question
is for Windows.
Very large PNG images (about 30 Megapixels) are written to the folder
every 5 seconds. I want to load these images, extract th
Am 29.01.2022 um 20:36 schrieb Michael Koch:
Hello,
is it possible to watch a folder for new images (like
fileSystemWatcher in C#), and if a new image appears, then load it in
FFmpeg? The question is for Windows.
Very large PNG images (about 30 Megapixels) are written to the folder
every 5
Am 30.01.2022 um 05:28 schrieb Gyan Doshi:
On 2022-01-30 02:11 am, Michael Koch wrote:
Am 29.01.2022 um 20:36 schrieb Michael Koch:
Hello,
is it possible to watch a folder for new images (like
fileSystemWatcher in C#), and if a new image appears, then load it
in FFmpeg? The question is
Am 30.01.2022 um 09:49 schrieb Michael Koch:
Am 30.01.2022 um 05:28 schrieb Gyan Doshi:
On 2022-01-30 02:11 am, Michael Koch wrote:
Am 29.01.2022 um 20:36 schrieb Michael Koch:
Hello,
is it possible to watch a folder for new images (like
fileSystemWatcher in C#), and if a new image
Am 30.01.2022 um 14:06 schrieb Michael Koch:
Am 30.01.2022 um 09:49 schrieb Michael Koch:
Am 30.01.2022 um 05:28 schrieb Gyan Doshi:
On 2022-01-30 02:11 am, Michael Koch wrote:
Am 29.01.2022 um 20:36 schrieb Michael Koch:
Hello,
is it possible to watch a folder for new images (like
Am 30.01.2022 um 14:29 schrieb Gyan Doshi:
On 2022-01-30 06:36 pm, Michael Koch wrote:
The problem is that FFmpeg seems to read the link only one time. When
I change the link target (while FFmpeg is running) with the copy
command, the link is actually changed but FFmpeg is still showing
Am 31.01.2022 um 05:03 schrieb Mark Filipak (ffmpeg):
During the past year, I've developed a set of true stream primitives
that are object oriented (frames, pictures, ...), plus a notation to
describe encodings and "mechanical" manipulations that are useful and
that are fairly easy to read an
Am 30.01.2022 um 15:40 schrieb Gyan Doshi:
On 2022-01-30 07:25 pm, Michael Koch wrote:
Am 30.01.2022 um 14:29 schrieb Gyan Doshi:
On 2022-01-30 06:36 pm, Michael Koch wrote:
The problem is that FFmpeg seems to read the link only one time.
When I change the link target (while FFmpeg is
Am 31.01.2022 um 11:22 schrieb Adam Nielsen via ffmpeg-user:
The best solution would be if something like fileSystemWatcher could be
added to FFmpeg.
Below is a C# example for fileSystemWatcher.
FFmpeg is written in C++. Windows, Mac and Linux each have a different
method for watching the files
Am 31.01.2022 um 05:03 schrieb Mark Filipak (ffmpeg):
During the past year, I've developed a set of true stream primitives
that are object oriented (frames, pictures, ...), plus a notation to
describe encodings and "mechanical" manipulations that are useful and
that are fairly easy to read an
Am 06.02.2022 um 08:17 schrieb Mark Filipak:
On 2022-02-06 00:30, Mark Filipak wrote:
The subject is the 'setts' filter...-clip-
What am I doing wrong?
Is the 'setts' bitstream filter dead? Note "No such filter: 'setts'".
ffmpeg -report -i 24'fps[24pps].vob -filter_complex
"setts=pts=N*3753
Am 19.02.2022 um 18:14 schrieb Simon Roberts:
Hi all, I would like to create a video sequence built around a number of
still images. Each image would be displayed for a number of seconds, then
dissolve/fade (not certain of the terminology) into the next.
To date, my experience with ffmpeg has be
Am 08.03.2022 um 19:09 schrieb Steven Kan:
After 7.5 years of waiting, my banana plant is finally flowering! I want to do
a time-lapse capture of the flowering and fruiting process. Due to its
location, the easiest way for me to get a camera out there is to use a little
WyzeCam v3 with the RTS
Question 1:
I have two streams with RGB24 pixel formats.
Is it possible to do the following calculation pixel-wise and write the
result to a grayscale stream?
output = abs(R1-R2) + abs(G1-G2) + abs(B1-B2)
Question 2:
Three streams are given:
[a] A static background image with no person in front
Am 04.04.2022 um 00:13 schrieb Hwaen Ch'uqi:
Greetings,
I preface this question by acknowledging that I know nothing of the
technical jargon of what I am about to describe. When I listen to a
certain mp3 file with headphones, there is an extremely annoying sound
coming from the right ear only. I
Am 10.04.2022 um 23:27 schrieb Steve Russell:
It's a no-name camera from China - the VID/PID say the vendor is ARC
International. No drivers supplied - it installed with standard MS
drivers - so there is no control software. As per my first post, I
understand (I think) why the settings aren't "
Hello,
I'm just testing the new feedback filter with this command line:
ffmpeg -i test.jpg -vf
"[in][fb_in]feedback=x=2000:y=1000:w=2000:h=2000[out][fb_out];[fb_out]gblur=50[fb_in]"
-map "[out]" -y out.jpg
I get this error message:
Output with label 'out' does not exist in any defined filter
Am 18.04.2022 um 20:00 schrieb Michael Koch:
Hello,
I'm just testing the new feedback filter with this command line:
ffmpeg -i test.jpg -vf
"[in][fb_in]feedback=x=2000:y=1000:w=2000:h=2000[out][fb_out];[fb_out]gblur=50[fb_in]"
-map "[out]" -y out.jpg
I get this e
Hello,
it's unclear how the new "avsynctest" source is expected to work. The
most simple command line
ffmpeg -f lavfi -i avsynctest=d=5 out.mov
gives this error message:
[lavfi @ 02741200efc0] Output pad "video" with type video of the
filter instance "Parsed_avsynctest_0" of avsynctest
Am 19.04.2022 um 03:34 schrieb Roger:
I'm not finding much about fixing video having incorrect white space, more
specifically video with incorrect or forgotten fluorescent white balance
setting during recording.
I have a very old VHS recorded tape without a fluorescent white balance
applied, and
Am 19.04.2022 um 20:38 schrieb Paul B Mahol:
On Tue, Apr 19, 2022 at 8:25 PM Michael Koch
wrote:
Am 19.04.2022 um 03:34 schrieb Roger:
I'm not finding much about fixing video having incorrect white space,
more
specifically video with incorrect or forgotten fluorescent white balance
se
Am 19.04.2022 um 20:44 schrieb Jim DeLaHunt:
On 2022-04-19 11:38, Paul B Mahol wrote:
On Tue, Apr 19, 2022 at 8:25 PM Michael
Koch
wrote:
I would do that with a color-look-up-table. The procedure is described
step-by-step in chapter 2.27 and an easier simplified version is
described in
Am 19.04.2022 um 23:06 schrieb Roger:
On Tue, Apr 19, 2022 at 08:25:17PM +0200, Michael Koch wrote:
Am 19.04.2022 um 03:34 schrieb Roger:
I'm not finding much about fixing video having incorrect white space, more
specifically video with incorrect or forgotten fluorescent white balance
se
Am 21.04.2022 um 04:25 schrieb Roger:
...
You can make your own LUT, as described in chapter 2.28 in my book.
-- Extract one frame from your video.
-- Insert a haldclut in a corner of the image, or use xstack to attach it to
the side.
-- Use the program of your choice to correct the colors in th
Hi,
I have some remarks and questions about the new "colorchart" source and
"colormap" filter.
In "colorchart" is a small error in the yellow field. It should be 231,
199, 31.
Source:
https://www.xritephoto.com/documents/literature/en/ColorData-1p_EN.pdf
"colorchart" is missing in the tabl
Am 25.04.2022 um 21:41 schrieb Paul B Mahol:
On Mon, Apr 25, 2022 at 9:16 PM Michael Koch
wrote:
Hi,
I have some remarks and questions about the new "colorchart" source and
"colormap" filter.
In "colorchart" is a small error in the yellow field. It should
Am 25.04.2022 um 22:19 schrieb Paul B Mahol:
On Mon, Apr 25, 2022 at 10:06 PM Carl Zwanzig wrote:
On 4/25/2022 12:49 PM, Michael Koch wrote:
Am 25.04.2022 um 21:41 schrieb Paul B Mahol:
There is separate software for processing real world colorcharts.
If colormap isn't for processi
Am 25.04.2022 um 22:19 schrieb Paul B Mahol:
On Mon, Apr 25, 2022 at 10:06 PM Carl Zwanzig wrote:
On 4/25/2022 12:49 PM, Michael Koch wrote:
Am 25.04.2022 um 21:41 schrieb Paul B Mahol:
There is separate software for processing real world colorcharts.
If colormap isn't for processi
Am 26.04.2022 um 09:18 schrieb Paul B Mahol:
On Tue, Apr 26, 2022 at 8:39 AM Michael Koch
wrote:
Am 25.04.2022 um 22:19 schrieb Paul B Mahol:
On Mon, Apr 25, 2022 at 10:06 PM Carl Zwanzig wrote:
On 4/25/2022 12:49 PM, Michael Koch wrote:
Am 25.04.2022 um 21:41 schrieb Paul B Mahol
I wrote a few examples for the workflow with "colorchart" source and
"colormap" filter.
This is a nice feature for making color corrections.
See chapters 2.31 and 2.32 in http://www.astro-electronic.de/FFmpeg_Book.pdf
Michael
___
ffmpeg-user mailing l
Am 27.04.2022 um 20:46 schrieb Roger:
On Wed, Apr 20, 2022 at 07:35:22AM +0200, Michael Koch wrote:
You can make your own LUT, as described in chapter 2.28 in my book.
-- Extract one frame from your video.
-- Insert a haldclut in a corner of the image, or use xstack to attach it to
the side
Am 27.04.2022 um 21:52 schrieb Roger:
Chapter 2.28 uses filter_complex without white spaces or colons?
$ ffmpeg -i 20220421_163910-meet.mp4 -i image_with_clut-meet-edited-clut.png
-filter_complex [0]eq=brightness=0.06[a];[a][1]haldclut -y
20220421_163910-meet-edited.mp4
Input #0, mov,mp4,m4a,
Hello,
I'm using this command line to capture 360° content from a Ricoh Theta V
camera and pipe the live video to VLC player:
ffmpeg -f dshow -i video="RICOH THETA V/Z1 FullHD" -f mpegts - |
"C:\Program Files\VideoLAN\VLC\vlc.exe" -
This command line works, but VLC doesn't recognize that it
Am 30.04.2022 um 19:03 schrieb Michael Koch:
Hello,
I'm using this command line to capture 360° content from a Ricoh Theta
V camera and pipe the live video to VLC player:
ffmpeg -f dshow -i video="RICOH THETA V/Z1 FullHD" -f mpegts - |
"C:\Program Files\VideoLAN\V
Am 24.05.2022 um 21:55 schrieb Cecil Westerhof via ffmpeg-user:
With a search on the internet I found I could put a picture into a
video with:
ffmpeg -i introductie.mkv -i Pictures/reiger.jpg \
-filter_complex "[0:v][1:v] overlay=W-w:H-h:enable='between(t,0,20)'" \
-pix_fmt yuv420p
Hello,
we want to use FFplay in a planetarium. It's a Windows computer with an
extended desktop. The left monitor contains the user interface
(1920x1080) and at the right side is a 4Kx4K extended desktop, which is
shown on two 4096x2048 monitors, upper half and lower half. The extended
4Kx4K
Am 25.05.2022 um 21:32 schrieb Gyan Doshi:
On 2022-05-25 08:31 pm, Michael Koch wrote:
Hello,
we want to use FFplay in a planetarium. It's a Windows computer with
an extended desktop. The left monitor contains the user interface
(1920x1080) and at the right side is a 4Kx4K extended de
Am 25.05.2022 um 21:32 schrieb Gyan Doshi:
On 2022-05-25 08:31 pm, Michael Koch wrote:
Hello,
we want to use FFplay in a planetarium. It's a Windows computer with
an extended desktop. The left monitor contains the user interface
(1920x1080) and at the right side is a 4Kx4K extended de
Am 28.05.2022 um 21:17 schrieb Cecil Westerhof via ffmpeg-user:
Paul B Mahol writes:
On Sat, May 28, 2022 at 4:28 PM Cecil Westerhof via ffmpeg-user
wrote:
When I just want to have a certain part of a video, I can do something
like:
ffmpeg -y -i input.MTS \
-ss 00
Am 31.05.2022 um 11:17 schrieb Bo Berglund:
On Sun, 29 May 2022 13:17:55 +0200, Michael Koch
wrote:
Using concat filter.
That is exactly what I already know: cutting the different parts.
Probably one command for each part and then concatenate them.
So n + 1 commands.
My question was: can it
Am 31.05.2022 um 18:43 schrieb Cecil Westerhof via ffmpeg-user:
Michael Koch writes:
I have a short example in chapter 2.57 of my book:
http://www.astro-electronic.de/FFmpeg_Book.pdf
Just to make sure I understand it, I should do something like:
ffmpeg -ss %S1% -t %L1% -i %I1
Am 31.05.2022 um 20:27 schrieb Cecil Westerhof via ffmpeg-user:
Michael Koch writes:
Am 31.05.2022 um 18:43 schrieb Cecil Westerhof via ffmpeg-user:
Michael Koch writes:
I have a short example in chapter 2.57 of my book:
http://www.astro-electronic.de/FFmpeg_Book.pdf
Just to make sure I
Am 31.05.2022 um 20:27 schrieb Cecil Westerhof via ffmpeg-user:
Michael Koch writes:
Am 31.05.2022 um 18:43 schrieb Cecil Westerhof via ffmpeg-user:
Michael Koch writes:
I have a short example in chapter 2.57 of my book:
http://www.astro-electronic.de/FFmpeg_Book.pdf
Just to make sure I
Hello,
I'd like to ask if the number of variables in expressions could be
increased from 10 to 25 please. I mean the st() and ld() functions. I'm
just programming a realtime wormhole simulation and the limitation to 10
variables is becoming nasty. I did already begin to re-use the same
variab
Am 03.06.2022 um 17:30 schrieb Paul B Mahol:
On Fri, Jun 3, 2022 at 5:05 PM Michael Koch
wrote:
Hello,
I'd like to ask if the number of variables in expressions could be
increased from 10 to 25 please. I mean the st() and ld() functions. I'm
just programming a realtime wormhole
The function between(x,min,max) is definded as: "Return 1 if x is
greater than or equal to min and less than or equal to max, 0 otherwise."
In some cases it would be useful to have a similar function (with a
different name) which doesn't include the maximum: "Return 1 if x is
greater than o
Am 03.06.2022 um 17:30 schrieb Paul B Mahol:
On Fri, Jun 3, 2022 at 5:05 PM Michael Koch
wrote:
Hello,
I'd like to ask if the number of variables in expressions could be
increased from 10 to 25 please. I mean the st() and ld() functions. I'm
just programming a realtime wormhole
I want to concat two audio files. What's wrong with this command line?
ffmpeg -i birds1.wav -i birds1.wav -lavfi [0][1]concat=n=2:a=1 -c:a aac
-y sound.mp4
I always get this error message:
Stream specifier '' in filtergraph description [0][1]concat=n=2:a=1
matches no streams.
The console ou
Am 11.06.2022 um 11:45 schrieb Gyan Doshi:
On 2022-06-11 03:02 pm, Michael Koch wrote:
I want to concat two audio files. What's wrong with this command line?
ffmpeg -i birds1.wav -i birds1.wav -lavfi [0][1]concat=n=2:a=1 -c:a
aac -y sound.mp4
Default value for concat v is 1. So you
Am 11.06.2022 um 11:46 schrieb Nicolas George:
Michael Koch (12022-06-11):
I always get this error message:
Stream specifier '' in filtergraph description [0][1]concat=n=2:a=1 matches
no streams.
Where did you find this "[number]" syntax, and has it ever worked for
you?
y
Hello,
I'm using FFmpeg for a realtime wormhole simulation in a planetarium.
There are two inputs:
a) An equirectangular video for the environment.
b) A realtime stream from a 360° camera, this is mapped inside the wormhole.
Both inputs are stitched together with xstack, and then a suitable re
Am 14.06.2022 um 13:47 schrieb Cecil Westerhof via ffmpeg-user:
Sometimes I have to cut parts out of a video. I now use for this (bash on
Debian):
ffmpeg -y\
-ss ${videoStart} -to ${cutStart} -i ${inputFile} \
-ss ${cut
Am 14.06.2022 um 15:33 schrieb Cecil Westerhof via ffmpeg-user:
Michael Koch writes:
Am 14.06.2022 um 13:47 schrieb Cecil Westerhof via ffmpeg-user:
Sometimes I have to cut parts out of a video. I now use for this (bash on
Debian):
ffmpeg -y
Am 14.06.2022 um 16:30 schrieb Cecil Westerhof via ffmpeg-user:
Michael Koch writes:
Am 14.06.2022 um 15:33 schrieb Cecil Westerhof via ffmpeg-user:
Michael Koch writes:
Am 14.06.2022 um 13:47 schrieb Cecil Westerhof via ffmpeg-user:
Sometimes I have to cut parts out of a video. I now
Am 13.06.2022 um 22:20 schrieb Michael Koch:
Hello,
I'm using FFmpeg for a realtime wormhole simulation in a planetarium.
There are two inputs:
a) An equirectangular video for the environment.
b) A realtime stream from a 360° camera, this is mapped inside the
wormhole.
Both input
Am 16.06.2022 um 09:33 schrieb Gyan Doshi:
On 2022-06-16 12:45 pm, Michael Koch wrote:
I would like to understand why in some cases -loop 1 is required
before the input files, and in some cases it can be omitted.
-loop option is specific to the image sequence demuxer. Without it, a
single
345ab40] kb/s:1390.74
[aac @ 0x55ce8347e7c0] Qavg: 533.159
--
******
ASTRO ELECTRONIC Dipl.-Ing. Michael Koch
Raabestr. 43 37412 Herzberg
www.astro-electronic.de
Tel. +49 5521 854265 Fax +49 5521 854266
**
__
Hi,
I don't understand the examples in https://trac.ffmpeg.org/wiki/Xfade
If the first input has length 5s and the offset is 4.5s and the duration
is 1s, then from where comes the first input between t=5s and t=5.5s?
Michael
___
ffmpeg-user mailing
Suggestion for improvement:
Add pixel interpolation to the remap filter. For example if the output
size is 800x600, multiply the values in the mapping files by 16 so that
the range is 12800x9600, and use the 4 least significant bits for pixel
interpolation.
Michael
__
Am 29.06.2022 um 09:15 schrieb Paul B Mahol:
On Wed, Jun 29, 2022 at 8:56 AM Michael Koch
wrote:
Suggestion for improvement:
Add pixel interpolation to the remap filter. For example if the output
size is 800x600, multiply the values in the mapping files by 16 so that
the range is 12800x9600
Hello,
is it possible to show an image with FFplay for 5 seconds, and then
exit? I did try this command in a Windows batch file, but it doesn't
stop after 5 seconds. I drag and drop the image on the batch file:
ffplay -autoexit -loop 0 -t 5 %1
Michael
___
Am 01.07.2022 um 16:03 schrieb Michael Koch:
Hello,
is it possible to show an image with FFplay for 5 seconds, and then
exit? I did try this command in a Windows batch file, but it doesn't
stop after 5 seconds. I drag and drop the image on the batch file:
ffplay -autoexit -loop 0 -t
Am 04.07.2022 um 18:46 schrieb Cecil Westerhof via ffmpeg-user:
Paul B Mahol writes:
On Mon, Jul 4, 2022 at 6:15 PM Cecil Westerhof via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
Some time ago I was experimenting with xfade. I wanted to know how to
use several in one run. Now I really need
Am 16.07.2022 um 20:57 schrieb Denis Połeć:
Am 16.07.2022 um 11:46 schrieb Paul B Mahol :
On Sat, Jul 16, 2022 at 11:22 AM Denis Połeć wrote:
Hello,
I wouldn't call myself a beginner, but I still need a little bit to become
a pro. :)
I have a question that might be easy to answer.
I am wor
Am 17.07.2022 um 12:09 schrieb Denis Połeć:
Am 16.07.2022 um 22:12 schrieb Michael Koch :
Am 16.07.2022 um 20:57 schrieb Denis Połeć:
Am 16.07.2022 um 11:46 schrieb Paul B Mahol :
On Sat, Jul 16, 2022 at 11:22 AM Denis Połeć wrote:
Hello,
I wouldn't call myself a beginner, but I
Am 17.07.2022 um 12:09 schrieb Denis Połeć:
Am 16.07.2022 um 22:12 schrieb Michael Koch :
Am 16.07.2022 um 20:57 schrieb Denis Połeć:
Am 16.07.2022 um 11:46 schrieb Paul B Mahol :
On Sat, Jul 16, 2022 at 11:22 AM Denis Połeć wrote:
Hello,
I wouldn't call myself a beginner, but I
Am 14.09.2022 um 11:21 schrieb Dan:
Using the latest 5.1.1 "essentials build" by www.gyan.dev.
Hi all, I'm a beginner to ffmpeg so I'm having a hard time believing
that a utility so old and so widely used has such a fundamental bug,
but the evidence is staring me in the face and leads me to no
Am 14.09.2022 um 19:00 schrieb Dan:
That's a great idea to use specified colours directly supported by ffmpeg
and helps narrow down the issue a lot!
Would you count this as a bug?
It seems to be a bug.
If this is a known legacy quirk, it seems
one of the ugliest and most misleading quirks I
Am 15.09.2022 um 00:30 schrieb Paul B Mahol:
On 9/15/22, Dan wrote:
zscale=...,format=yuv420p
O okay. I tried that before (except using two -vf commands), because
I
suspected you might've meant that.
Just tried it again, still no luck. Let me know if I need to tweak
anything:
ffmpeg.
Am 15.09.2022 um 11:01 schrieb Paul B Mahol:
On 9/15/22, Michael Koch wrote:
Am 15.09.2022 um 00:30 schrieb Paul B Mahol:
On 9/15/22, Dan wrote:
zscale=...,format=yuv420p
O okay. I tried that before (except using two -vf commands),
because
I
suspected you might've meant that.
Am 15.09.2022 um 11:26 schrieb Dan:
You are right that datascope shows no difference. But the issue is also
reproducible with VLC player.
As well as VLC Player and FFplay, I've tried MediaPlayerClassic,
Google Chrome,
Microsoft Edge and Vegas Pro, and the problem occurs with each of
those. Co
Am 15.09.2022 um 11:41 schrieb Paul B Mahol:
On 9/15/22, Michael Koch wrote:
Am 15.09.2022 um 11:26 schrieb Dan:
You are right that datascope shows no difference. But the issue is also
reproducible with VLC player.
As well as VLC Player and FFplay, I've tried MediaPlayerClassic,
G
Am 15.09.2022 um 11:53 schrieb Dan:
This seems to work with VLC player:
ffmpeg -f lavfi -i color=0x19be0f:s=400x576 -colorspace bt709 -crf 0
-vcodec libx264 -t 5 -y out1.mp4
ffmpeg -f lavfi -i color=0x19be0f:s=400x578 -colorspace bt709 -crf 0
-vcodec libx264 -t 5 -y out2.mp4
Unfortunately, doe
Am 15.09.2022 um 11:53 schrieb Dan:
This seems to work with VLC player:
ffmpeg -f lavfi -i color=0x19be0f:s=400x576 -colorspace bt709 -crf 0
-vcodec libx264 -t 5 -y out1.mp4
ffmpeg -f lavfi -i color=0x19be0f:s=400x578 -colorspace bt709 -crf 0
-vcodec libx264 -t 5 -y out2.mp4
Unfortunately, doe
Am 15.09.2022 um 13:43 schrieb Dan:
On Thu, 15 Sep 2022 12:07:08 +0100, Michael Koch
wrote:
Am 15.09.2022 um 11:53 schrieb Dan:
This seems to work with VLC player:
ffmpeg -f lavfi -i color=0x19be0f:s=400x576 -colorspace bt709 -crf 0
-vcodec libx264 -t 5 -y out1.mp4
ffmpeg -f lavfi -i color
Am 16.09.2022 um 15:20 schrieb Dan:
showinfo filter shows video frame color metadata to output of console,
nothing less - nothing more. showinfo cant produce incorrect video, if
you ever bothered to read documentation you would know.
By the way, just to clarify, I wasn't talking about the conso
Am 16.09.2022 um 16:34 schrieb Dan:
On Fri, 16 Sep 2022 14:55:20 +0100, Michael Koch
wrote:
Am 16.09.2022 um 15:20 schrieb Dan:
showinfo filter shows video frame color metadata to output of console,
nothing less - nothing more. showinfo cant produce incorrect video, if
you ever bothered to
Am 16.09.2022 um 16:51 schrieb Erik Dobberkau:
Apart from width, height, PAR, DAR and SAR, bit depth and subsampling
method, the color encoding parameters are responsible for the visual
representation of an image: color space, primaries, white point, transfer
function, color range, and color mat
Why does datascope show the color components in the unusual order GBR
(from top to bottom)? It's confusing.
Can the order be changed to RGB?
ffmpeg -f lavfi -i color=black:s=26x6 -lavfi
format=rgb24,geq=r='clip(64*mod(X,5),0,255)':g='clip(64*Y,0,255)':b='clip(64*trunc(X/5),0,255)',crop=25:5:0:0
Am 18.09.2022 um 13:36 schrieb Michael Koch:
Why does datascope show the color components in the unusual order GBR
(from top to bottom)? It's confusing.
Can the order be changed to RGB?
ffmpeg -f lavfi -i color=black:s=26x6 -lavfi
format=rgb24,geq=r='clip(64*mod(X,5),0,255)
Am 18.09.2022 um 18:50 schrieb Carl Zwanzig:
On 9/18/2022 5:28 AM, Michael Koch wrote:
It seems the crop filter did change the pixel format to GBR.
Which brings the follow-up question- why did crop...?
geq or crop, one of them.
IIRC, some/many/most/all filters operate on a limited number
Am 07.10.2022 um 19:32 schrieb i...@mbsoft.biz:
i have 2 inputs
first input image -i logo.png
second input dshow webcam -f dshow -i video="my webcam"
is it possible to show 5 seconds logo and and subsequently start webcam?
Here is an example for switching between two inputs after 5 seconds
Am 07.10.2022 um 19:32 schrieb i...@mbsoft.biz:
i have 2 inputs
first input image -i logo.png
second input dshow webcam -f dshow -i video="my webcam"
is it possible to show 5 seconds logo and and subsequently start webcam?
it can also be done with "streamselect" filter, have a look at the
Am 07.10.2022 um 21:32 schrieb i...@mbsoft.biz:
I have tried
ffmpeg.exe" -loglevel quiet -analyzeduration 0 -probesize 32 -report -i
"e:\\logo.png" -f dshow -video_size 1280x720 -framerate 30
-video_device_number 0 -i "video=Full HD 1080P PC Camera" "sendcmd='5.0"
streamselect map "1',streamsele
Am 07.10.2022 um 20:28 schrieb Michael Koch:
Am 07.10.2022 um 19:32 schrieb i...@mbsoft.biz:
i have 2 inputs
first input image -i logo.png
second input dshow webcam -f dshow -i video="my webcam"
is it possible to show 5 seconds logo and and subsequently start webcam?
it can al
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