Thanks for that trip down the rabbit hole. I had never heard the term
before, so when I looked it up, I came across this:
https://archive.nytimes.com/opinionator.blogs.nytimes.com/2010/06/20/the-anosognosics-dilemma-1/
Warning: it's part 1 of 5 parts.
Leo
On Tue, Jan 16, 2024 at 6:59 AM Rob
On 11/28/23, Paul B Mahol wrote:
> On Tue, Nov 28, 2023 at 9:40 PM Leo Butler via ffmpeg-user <
> ffmpeg-user@ffmpeg.org> wrote:
>
>> Hello,
>>
>> I ran into this problem with the current Debian testing build, so I
>> thought I would try the static bu
Hello,
I ran into this problem with the current Debian testing build, so I
thought I would try the static build. Both are compiled with
--enable-libfreetype but both barf on a drawtext filter. I am attaching
the log file from the static build.
According to:
On 10/15/23, Ulf Zibis wrote:
> Hi,
>
> is there a tutorial on how to add title and chapters to mkv file?
>
> I didn't find any information in ffmpeg documentation and wiki.
>
> Thanks,
>
> -Ulf
>
The answer is not specific to any particular container.
The easiest way, in my opinion, is to
On 10/16/23, Cecil Westerhof via ffmpeg-user wrote:
> Ulf Zibis writes:
>
>> Am 12.10.23 um 11:51 schrieb Cecil Westerhof via ffmpeg-user:
>>> I just found this:
>>> https://trac.ffmpeg.org/wiki/Capture/Desktop
>>>
>>> Very interesting indeed.
>>>
>>> I have two monitors. I could write
On Sun, Nov 13 2022, Michael Koch wrote:
> I have a question about piping from FFmpeg to FFplay (in a Windows
> batch file):
>
> ffmpeg -f lavfi -i testsrc2 -f nut | ffplay -
>
> This command line works fine and I have used it many times. But I
> don't know what's the meaning of the - character
On Tue, Oct 11 2022, pehache wrote:
> Le 08/09/2022 à 00:04, James Board via ffmpeg-user a écrit :
>> I'm trying to re-encode an MKV file that I originally created with makemkv
>> from the original BluRay disc. My ffmpeg command is:
>> ffmpeg-4.1.2-amd64-static/ffmpeg -y -i
>>
On Tue, Oct 11 2022, wrote:
> It's a mess the way ffmpeg handle the paths on windows ... for inputs it use
> the standard way drive:\folder\file but for filters it use that
> drive:\\:/folder/file it's illogical to me!
The syntax is drive\\:/path/to/file, not what you have written.
Why?
On Tue, Jul 05 2022, Carl Zwanzig wrote:
> On 7/4/2022 8:04 AM, Leo Butler via ffmpeg-user wrote:
>> Question: Is there a better way to sidestep the problem of changing
>> width or height? e.g. does ffmpeg already have a way to handle width or
>> height changes?
>
Hello,
I am transcoding recordings using the concat filter. A problem that
occurs from time-to-time is that the broadcaster switches the width
and/or height in the middle of a broadcast. That ends up causing an
error with the concat filter.
The only way that I can think of to handle this issue
Simon Roberts writes:
> 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 been very
Synopsis: I have a video (.webm) with existing chapter metadata. I want
to overwrite that with data from a metadata file. I don't understand why
map_metadata can write, but does not overwrite, chapter metadata.
Try:
Create a video with a couple chapters (see below):
ffmpeg -y -f lavfi -i
Anton Kapela writes:
> Folks,
>
> I had a fun weekend project and thought to share it here since it uses
> ffmpeg at every step, from receiver onwards.
>
> reddit.com/r/nasa/comments/s2x175/nasa_uhd_returns_to_the_internet
>
> If anyone's curious, can happily post all the invocations and general
Simon van Bernem via ffmpeg-user writes:
> Those look very promising, but my version of ffmpeg doesn'tknow the segment
> filter. I found it in the changelog for version5, but the website lets me
> only download 4.4 and the github'slast release is 3.0 from 2016. Is the
> segment filter not
Cecil Westerhof via ffmpeg-user writes:
> I have the recording of a zoom meeting where I need to cut out a
> portion from and the first little bit has to be blacked out.
>
> I use the following command:
> ffmpeg -y\
> -ss 00:26:05
"Bouke (Edit 'B)" writes:
>> On 17 Dec 2021, at 11:08, Bo Berglund wrote:
>>
>> Can I keep the copy for video but re-encode for audio?
>> Some ffmpeg command suggestion?
>
> -c:v copy -c:a ‘something’, but no clue if it will help you…
You want to look into the concat filter (section 44.8)
Steven Kan writes:
> I normally stream my IP cameras to YouTube from my RPi. I just got my spiffy
> new (used) M1-based Mac mini, so I’m trying to move my streams over there so
> I can use the extra horsepower to stream 2-up from 2 cameras into one stream.
>
> But first I want to just
Steven Kan writes:
> Hi! I currently stream my IP cameras to YouTube with a command of the form:
>
> ffmpeg -i "rtsp://anonymous:password@192.168.1.11:554" -vcodec copy
> -acodec copy -t 01:00:00 -f flv
> "rtmp://a.rtmp.youtube.com/live2/my-youtube-streaming-key”
>
> It works well, for a single
Ilia Katz writes:
> I am using the following command to concatenate a PNG image to a MP4 video.
> Both are of 920 × 256 resolution.
>
> ffmpeg -loop 1 -vsync 2 -t '20ms' -i '/path/to/image' -t '20ms' -f lavfi -i
> aevalsrc=0 -i '/path/to/video' -filter_complex '[0:0] [1:0] [2:0] [2:1]
>
"Shupert, Jim via ffmpeg-user" writes:
> command-line copying
>> seems
> to
>> have omitted stuff.
>
> If I understand correctly, your command line uses the Libavfilter input
> virtual device and a multimedia source.
>
> If the success of that command line depends on either, please clarify how
"Shupert, Jim via ffmpeg-user" writes:
> Here is an example with ffmpeg:
>
> $ /usr/bin/ffmpeg -f lavfi -i \
> 'movie=4131_2015081418.mpg[out0+subcc]' -t 00:01:00 -map s \
> /tmp/4131_2015081418.mpg.srt
Top posting is discouraged on this list.
See the documentation here for more
John Finlay via ffmpeg-user writes:
> I use CCExtractor at https://ccextractor.org/ for this purpose.
>
> John
>
> On 10/19/21 12:36 PM, Shupert, Jim via ffmpeg-user wrote:
>> Friends
>>
>> I have a mpg that I wish to extract the captions as a file.srt.
>>
>> I have tried a few things I found
"Shupert, Jim via ffmpeg-user" writes:
> -Original Message-
> From: ffmpeg-user On Behalf Of Shupert, Jim
> via ffmpeg-user
> Sent: Sunday, October 10, 2021 5:15 PM
> To: ffmpeg-user@ffmpeg.org
> Cc: Shupert, Jim
> Subject: [EXTERNAL] [FFmpeg-user] Parse a transport stream and get
Bo Berglund writes:
> Here is the complete result including my test of the exit code of ffmpeg:
>
>
> $ ffmpeg -i bluearrow.mp4 -vf "freezedetect=n=0.01:d=5" -map 0:v:0 -f null -
> [freezedetect @ 0x55ce112ce980] lavfi.freezedetect.freeze_start: 0
correct?
Yes.
The ffmpeg manual is pretty good at explaining how this works.
>
> It's nice when it works :)
Very much so!
Best,
Leo
>
>
>
> Leo Butler via ffmpeg-user:
>> "S. Helbig via ffmpeg-user" writes:
>>
>>> Hello,
>>>
"S. Helbig via ffmpeg-user" writes:
> Hello,
>
> I've been trying to record an IP-cam stream (Foscam, mjpg) via http with
> ffmpeg.
>
> The stream URL looks like this:
> http://192.168.1.123:456/videostream.cgi?user=USERNAME=PWD
>
> So I created the string (w.o line wrap):
> ffmpeg -i -loglevel
Ulf Zibis writes:
> Hi,
>
> I have some photos from a iPhone in HEIC format. Is there a chance, to
> convert them to a "normal" format?
Try
convert image.heic image.jpg
convert is a program in the imagemagick suite.
https://www.imagemagick.org/script/convert.php
Leo
Ulf Zibis writes:
> Am 22.04.21 um 13:01 schrieb Michael Koch:
>> Am 22.04.2021 um 12:50 schrieb Ulf Zibis:
>>> Hi,
>>>
>>> I want to filter a video from pts 0 to 1999 with filter A, then from 2000
>>> to 2199 with filter B, from 2200 with filter A and finally the whole stream
>>> with filter
Rob Hallam writes:
> On Sat, 27 Mar 2021 at 11:39, Peter White wrote:
>>
>> On Sat, Mar 27, 2021 at 08:15:23AM +0100, Bo Berglund wrote:
>> > I am using ffmpeg in scripts to download from a live stream TV channel
>> > nightly
>> > so I can view the shows in the morning.
>>
>> I also seem to
Bo Berglund writes:
> On Sat, 27 Mar 2021 10:06:03 +0100, Peter White
> wrote:
>
>>> But it all looks the same with the time incrementing at exactly 5 seconds...
>>
>>Looks like someone took extra care to have a static keyframe interval.
>>One can do that. With default codec options x264 won't
Cecil Westerhof via ffmpeg-user writes:
> Carl Zwanzig writes:
>
>> On 3/26/2021 2:09 AM, Cecil Westerhof via ffmpeg-user wrote:
>>> I publish speeches I give during zoom meetings. The problem is that
>>> some people forget to mute themselves and when they make a sound they
>>> will appear in
Carl Eugen Hoyos writes:
> Am Mi., 24. Feb. 2021 um 23:37 Uhr schrieb Maksym Portianoi
> :
>
>> No, cat won't solve my issue
>
> Then your command line most likely will not work either,
> independent from "lambda". The concat protocol works
> exactly as cat.
Most likely, you need to look at
adam smith via ffmpeg-user writes:
> Hi people, I have a subtitle question; yay.
>
> I have a 2 minute mp4 that I am going to trim using -ss and -to .
>
> I have a SRT subtitle file with timings that will line up with the trimmed
> mp4.
>
> If I try and trim the mp4 and add the subtitles at
"Mark Filipak (ffmpeg)" writes:
> On 01/25/2021 03:58 PM, Leo Butler via ffmpeg-user wrote:
>> "Sergey \"GrayFace\" Rozhenko via ffmpeg-user"
>> writes:
>>
>>> Hello.
>>>
>>> I've met a childish person with
"Sergey \"GrayFace\" Rozhenko via ffmpeg-user"
writes:
> Hello.
>
> I've met a childish person with nickname "cehoyos" that made it his
> goal to block a bug report I've filed.
Please do not use such derogatory characterizations. You are insulting
someone who is giving his time without cost to
tu...@posteo.de writes:
> Hi,
>
> (I am using GENTOO Linux and X11/openbox and a NVidia GeForce RTX 2060 SUPER
> graphics card.)
>
> I want to use ffmpeg for screenrecording (beside other tings of
> course...)
>
>
> Currently I need to stay on the certain desktop, which I currentlu
> recording.
>
David Bayles writes:
> Corrupted video file, FFprobe output text file, and FFmpeg output text file
> are all available to download here:
> https://drive.google.com/drive/folders/1R0Y5plgkhTWWFNNKgSNJ5yitpKQbIKgg?usp=sharing
>
> I'm hoping there is a way to extract good video and audio from this
Rama Krishna Thelagathoti writes:
> Hello ffmpeg team, kindly help me with following issue
> 360sample.mp4 is 360 video and with following command out.mp4 is also 360
> video.
>
> sudo ffmpeg -i 360sample.mp4 -vcodec libx264 -strict unofficial
> -vprofile high -acodec aac out.mp4
An aside: You
Nicolas George writes:
> I just told you it does not need to “use it like” an input because it
> ***IS*** an input.
Thank you for your heat, if not light.
Leo
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Nicolas George writes:
>> Rather than creating the file C.mkv in the first pass, can the lavfi
>> filter use the video output stream of the concat filter directly?
>
> My answer is the same: 'movie=C.mkv[out0+subcc]' is just another input,
> like B.ts. You can see that because they both have -i
Nicolas George writes:
> Leo Butler via ffmpeg-user (12020-06-10):
>> ffmpeg -i C.mkv -f lavfi 'movie=C.mkv[out0+subcc]' -map 0 -map 1:s D.mkv
>
> You are missing a -i in this command line.
>
>> Question: Is there a way to reduce this to one pass?
>
> With the
Currently, the only way I know to extract/insert closed captions as a
subtitle stream is in 2 passes. Something like
ffmpeg -i A.ts -i B.ts -filter_complex '[0:0][0:1][1:0][1:1]
concat=n=2:v=1:a=1' C.mkv
ffmpeg -i C.mkv -f lavfi 'movie=C.mkv[out0+subcc]' -map 0 -map 1:s D.mkv
(In practice, A.ts
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