Re: [FFmpeg-user] It appears that FFmpeg is slipping into command mode

ing a program like FFmpeg that accepts commands from stdin while running will eat your remaining batch script as input. > > Unless... You invoke that program from the .bat with the START command, which will cause the program to run in a new session and does not use the stdin from the previous

Re: [FFmpeg-user] Spontaneously slipping into command mode

On 2025-07-27 15:45, Mark Filipak wrote: On 27/07/2025 16.51, Jim DeLaHunt wrote: ...I understand that FFmpeg routinely monitors stdin while running... Oh, yes, of course. But-- But-- But my understanding is that > redirects to stdout. I'm not sending anything to stdin. ...So, (?).

Re: [FFmpeg-user] Spontaneously slipping into command mode

Mark: On 2025-07-27 09:42, Mark Filipak wrote: This is a serious post about a serious issue -- restarted due to distracting responses. The best way to see and replicate the problem is to run this script (which creates three AC3s and a FOO.TXT on c:\): ffmpeg -y -f lavfi -i anullsrc=channel_lay

Re: [FFmpeg-user] Chroma subsampling formats

your improvements to Wikipedia are of most value if you can back them up with citations to reliable sources. [3] <https://en.wikipedia.org/wiki/Wikipedia:Reliable_sources> [4] <https://en.wikipedia.org/wiki/Wikipedia:No_original_research> [5]

Re: [FFmpeg-user] Chroma subsampling formats

r, for a start. But if you want to communicate clearly, maybe it is required. Now I am not an expert, so maybe my difficulties won't apply between you and Poynton. But this is my addition. Best regards, —Jim DeLaHunt ___ ffmpeg-user m

Re: [FFmpeg-user] Yes or No? About the processing pipeline.

sort of detail. The reflexive response of the FFmpeg experts active on this list is typically, "go read the source code". But the source code is complex and difficult to follow, so it makes poor documentation for this purpose.  And for some reason, the FFmpeg project has an immune res

Re: [FFmpeg-user] Yes or No? About the processing pipeline.

sult the FFmpeg source code and documentation and use that terminology exactly in his question. I think that understanding framing is useful for effective communication, and applies to technical discussions about video-editing software as well as political discussions. Thus I claim that my

Re: [FFmpeg-user] Is FLAC lossless for compression_level > 0?

On 2025-06-08 16:17, Mark Filipak wrote: On 08/06/2025 17.06, Jim DeLaHunt wrote: On 2025-06-08 13:35, Mark Filipak wrote: Is FLAC (Free Lossless Audio Codec) lossless for compression_level > 0? Yes, says the FLAC documentation[1]: it is "an audio format similar to MP3, but

Re: [FFmpeg-user] Is FLAC lossless for compression_level > 0?

verview* <https://xiph.org/flac/documentation_format_overview.html> Best regards,     —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or ema

Re: [FFmpeg-user] old version of ffmpeg

oblems <https://trac.macports.org/wiki/ElCapitanProblems> and I do not see FFMpeg mentioned there.  Absence of a problem ticket does not guarantee that MacPorts can make FFMpeg work on El Capitan, but it is encouraging. Best regards, —

Re: [FFmpeg-user] Trying to understand ffmpeg cpu usage in this case of capturing rtsp streams

> > >> >> On Sat, Nov 9, 2024 at 2:12 PM Ferdi Scholten wrote: >> >>> >>> >>> On 09-11-2024 19:31, Moritz Barsnick via ffmpeg-user wrote: >>> > On Sat, Nov 09, 2024 at 13:11:56 -0500, Jim Ruxton wrote: >>> >> "ap

Re: [FFmpeg-user] Trying to understand ffmpeg cpu usage in this case of capturing rtsp streams

> > > On Sat, Nov 9, 2024 at 2:12 PM Ferdi Scholten wrote: > >> >> >> On 09-11-2024 19:31, Moritz Barsnick via ffmpeg-user wrote: >> > On Sat, Nov 09, 2024 at 13:11:56 -0500, Jim Ruxton wrote: >> >> "apt-list ffmpeg" shows the version

Re: [FFmpeg-user] Trying to understand ffmpeg cpu usage in this case of capturing rtsp streams

On Sat, Nov 9, 2024 at 2:12 PM Ferdi Scholten wrote: > > > On 09-11-2024 19:31, Moritz Barsnick via ffmpeg-user wrote: > > On Sat, Nov 09, 2024 at 13:11:56 -0500, Jim Ruxton wrote: > >> "apt-list ffmpeg" shows the version 7 package is installed >

Re: [FFmpeg-user] Trying to understand ffmpeg cpu usage in this case of capturing rtsp streams

On Sat, Nov 9, 2024 at 10:56 AM Carl Zwanzig wrote: > Please do not top-post on this list. > > On 11/8/2024 3:46 PM, Jim Ruxton wrote: > > Thanks so much for the help. Not sure why but when I try to upgrade > ffmpeg > > using the ppa as you suggested I get: > > &g

Re: [FFmpeg-user] Trying to understand ffmpeg cpu usage in this case of capturing rtsp streams

nd C would have the same cpu usage since > >> they > >>> are the same resolution just coming from different devices. Can anyone > >>> explain what I see as strange behaviour. Stream commands follow. > >>> > >>> > >>> Stream A: ffm

Re: [FFmpeg-user] Trying to understand ffmpeg cpu usage in this case of capturing rtsp streams

; Stream B: ffmpeg -f rtsp -irtsp://192.168.35.243:8086/?camera=eyes -vf > > format=yuv420p -f v4l2 /dev/video3 > > > > Stream C: ffmpeg -f rtsp -irtsp://192.168.35.247:8086/?camera=eyes -vf > > format=yuv420p -f v4l2 /dev/video5 > > > > Thanks, > > Jim

[FFmpeg-user] Trying to understand ffmpeg cpu usage in this case of capturing rtsp streams

mpeg -f rtsp -i rtsp://192.168.35.243:8086/?camera=world -f v4l2 /dev/video2 Stream B: ffmpeg -f rtsp -i rtsp://192.168.35.243:8086/?camera=eyes -vf format=yuv420p -f v4l2 /dev/video3 Stream C: ffmpeg -f rtsp -i rtsp://192.168.35.247:8086/?camera=eyes -vf format=yuv420p -f v4l2 /dev

Re: [FFmpeg-user] the trim filter

7+00308.mp4 Just a wild guess: try adding ":a" after each input label before "atrim". So, "[i5a]atrim=start=20.062:end=5590.835[o5a]" becomes "[i5a:a]atrim=start=20.062:end=5590.835[o5a]". And so on for the other three atrim filters. What error m

Re: [FFmpeg-user] the trim filter

ead how to separate the audio media from the video media and feed them to each their own filters. Maybe the documentation on "Stream Selection" <https://ffmpeg.org/ffmpeg-all.html#Stream-selection> has the answer. Maybe you can append str

[FFmpeg-user] Giving fish vs teaching how to fish [was: Re: I found the bugs]

On 2024-06-19 16:01, Mark Filipak wrote: …Jim DeLaHunt is fine. He just likes to preach and sing Kumbaya without actually contributing at lot.… It's called "coaching", Mark. Something about giving a person a fish vs teaching them how to fish. But it doesn't always take.

Re: [FFmpeg-user] I found the bugs

/www.videohelp.com/software/tsMuxeR> * TSInspector, by AlexanderCaesar <https://github.com/AlexanderCaesar/TSInspector> * Inspector, by Twitch <https://inspector.twitch.tv> There are more. Which tool do you mean, please? What is a URL or other specific identi

Re: [FFmpeg-user] About trac (bug reporting)

On 2024-06-18 08:16, Greg Oliver wrote: On Tue, Jun 18, 2024 at 9:45 AM Mark Filipak wrote: …There needs to be a triage facility between ffmpeg-user and trac in which ideas are discussed, problems are thought out, and good problem statements are formulated. The triage needs to be led by senior

Re: [FFmpeg-user] About trac (bug reporting)

On 2024-06-18 07:45, Mark Filipak wrote: There needs to be a triage facility between ffmpeg-user and trac in which ideas are discussed, problems are thought out, and good problem statements are formulated. The triage needs to be led by senior users (volunteers) who have been around here a whil

Re: [FFmpeg-user] I found the bugs

On 2024-06-16 01:19, Mark Filipak wrote: On 16/06/2024 03.51, Jim DeLaHunt wrote: On 2024-06-15 23:04, Mark Filipak wrote: On 15/06/2024 23.39, Jim DeLaHunt wrote: On 2024-06-15 19:27, Mark Filipak wrote: It would be nice if folks from here went here: https://trac.ffmpeg.org/ticket/11055

Re: [FFmpeg-user] I found the bugs

On 2024-06-15 23:04, Mark Filipak wrote: On 15/06/2024 23.39, Jim DeLaHunt wrote: On 2024-06-15 19:27, Mark Filipak wrote: It would be nice if folks from here went here: https://trac.ffmpeg.org/ticket/11055 and saw what is going on. It's up to 76 comments now, so what I ask will take

Re: [FFmpeg-user] I found the bugs

On 2024-06-15 19:27, Mark Filipak wrote: It would be nice if folks from here went here: https://trac.ffmpeg.org/ticket/11055 and saw what is going on. It's up to 76 comments now, so what I ask will take you a while. What's going on is a crime. What's the crime, detective?  All I see is two p

[FFmpeg-user] ticket/11055 FFmpeg reports inconsistent PTS, DTS between 3 invocations [was: Re: I found the bugs]

m not your target audience.  My purpose is to help you make #11055 be a well-formed bug report which affords developers fixing one bug in FFmpeg. I suspect that helping you achieve your goals will require multiple, incremental, bug fixes. Best regards,   —Jim DeLaHunt _

Re: [FFmpeg-user] I found the bugs

see some progress in clarifying the information of the bug report. A lot of the time I don't know what meaning "MasterQuestionable" is trying to communicate[1][2]. However sometimes I don't know what you are trying to communicate either.  Writing clearly about complicated

Re: [FFmpeg-user] I found the bugs

er's context and frame of reference. Someone has to do that work.  One of the reasons why bugs don't get fixed is that the work doesn't get done.  If you really want the bug to get fixed, maybe you will have to do more of that work than you prefer to. I hope this is helpful.  A

Re: [FFmpeg-user] FFmpeg

o look for details on how to use quotes around command parameters. This list is not a good place to get that tutorial; people here mostly assume that everyone already knows how to use command-line interface programs, like FFmpeg and many others. Best regards, —Ji

Re: [FFmpeg-user] Configure error with fontconfig

> On Apr 30, 2024, at 13:53, Jim Worrall wrote: > > > >> On Apr 30, 2024, at 11:29, Jim Worrall wrote: >> >> >> >>> On Apr 30, 2024, at 09:41, Jim Worrall wrote: >>> >>> >>> >>>> On Apr 29, 2024, at

Re: [FFmpeg-user] Configure error with fontconfig

> On Apr 30, 2024, at 11:29, Jim Worrall wrote: > > > >> On Apr 30, 2024, at 09:41, Jim Worrall wrote: >> >> >> >>> On Apr 29, 2024, at 23:00, Ferdi Scholten wrote: >>> >>> This may not be due to ffmpeg itself, but I would

Re: [FFmpeg-user] Configure error with fontconfig

> On Apr 30, 2024, at 09:41, Jim Worrall wrote: > > > >> On Apr 29, 2024, at 23:00, Ferdi Scholten wrote: >> >> This may not be due to ffmpeg itself, but I would appreciate some help. >>> Configure says that pkg-config can’t find fontconfig.pc, but it

Re: [FFmpeg-user] Configure error with fontconfig

> On Apr 29, 2024, at 23:00, Ferdi Scholten wrote: > > This may not be due to ffmpeg itself, but I would appreciate some help. >> Configure says that pkg-config can’t find fontconfig.pc, but it seems to be >> in the PKG_CONFIG_PATH. >> >> # ./configure --cc=/usr/bin/gcc \ >> --prefix=$TARGET \

[FFmpeg-user] Configure error with fontconfig

This may not be due to ffmpeg itself, but I would appreciate some help. Configure says that pkg-config can’t find fontconfig.pc, but it seems to be in the PKG_CONFIG_PATH. # ./configure --cc=/usr/bin/gcc \ --prefix=$TARGET \ --pkg-config-flags="--static" \ --extra-cflags="-I/usr/local/include" \

Re: [FFmpeg-user] How to make IDR cuts

s-up, you seem to have forgotten to put any text in your > message, Mr. Shupert. It just quotes mark's email. > > You're welcome, > David > > On Sat, 20 Apr 2024 17:26:20 -0400 > jim shupert wrote: > > On Wed, Apr 3, 2024 at 8:02 AM Mark Filipak > > wrote

Re: [FFmpeg-user] How to make IDR cuts

On Wed, Apr 3, 2024 at 8:02 AM Mark Filipak wrote: > Is there more to this? If there is, it's not evident to me. > > If there are several B-frames in a row, then adjust your mind to 'see' > larger shifts across the > multiple B-frames and adjust PTSs & DTSs to match. > > > Cutting off a leading o

Re: [FFmpeg-user] Is there a way to cut a video at an exact time ?

> On Apr 13, 2024, at 01:57, bbb wrote: > > Sorry for bothering you. It only behaves like this when I use "-codec copy". > Without that option it accepts the exact time I've specified. > > On 4/13/24 13:47, bbb wrote: >> I want to cut off the start of a video. When I tell ffmpeg to start at a

Re: [FFmpeg-user] compile failure during make

> On Mar 8, 2024, at 03:20, Gyan Doshi wrote: > > > > On 2024-03-08 11:58 am, Gyan Doshi wrote: >> >> >> On 2024-03-08 06:06 am, Jim Worrall wrote: >>> I’ve been building ffmpeg on a Mac since 2017, and this is the first time >>> I’ve

[FFmpeg-user] compile failure during make

27;read_close' does not refer to any field in type 'const AVInputFormat' (aka 'const struct AVInputFormat') .read_close = avf_close, ^ 8 warnings and 4 errors generated. make: *** [libavdevice/avfoundation.o] Error 1 JimsMBPro:ffmpeg jim$ To me it looks like an i

Re: [FFmpeg-user] Illustration review, Streams and GOP Frame Reordering [was: a couple of things to look at]

On 2024-03-03 16:11, Mark Filipak wrote: On 03/03/2024 18.33, Jim DeLaHunt wrote: Regarding the Streams illustration <https://markfilipak.github.io/Video-Object-Notation/Streams.html>: The macroblock to slice to picdata transition is clear. Showing 45 macroblocks in a horizontal slice

Re: [FFmpeg-user] Illustration review, Streams and GOP Frame Reordering [was: a couple of things to look at]

Mark: On 2024-03-02 19:51, Mark Filipak wrote: I have a couple of things to look at. https://markfilipak.github.io/Video-Object-Notation/Streams.html https://markfilipak.github.io/Video-Object-Notation/GOP%20%26%20Frame%20Reordering.html Comments are welcome. Please be brutal. 'Streams' is

Re: [FFmpeg-user] Packet corrupt on cut, notice on concat

Mark: On 2024-02-19 17:31, Mark Filipak wrote: On 19/02/2024 18.49, Jim DeLaHunt wrote: On 2024-02-19 15:04, Mark Filipak wrote: If I recall correctly, each of the two segments was a couple hundred bytes. The two sources total 27 GB and are copyrighted. If the sources are 27GB, then that is

Re: [FFmpeg-user] Packet corrupt on cut, notice on concat

Mark: On 2024-02-19 15:04, Mark Filipak wrote: On 19/02/2024 16.45, Jim DeLaHunt wrote: Mark: On 2024-02-19 13:23, Mark Filipak wrote: Best to create minimal reproducible usecase with all required files to reproduce it, upload it somewhere and link it on ffmpeg trac site. I did that. It

Re: [FFmpeg-user] Packet corrupt on cut, notice on concat

making progress with this problem.  It is one thing to be unskilled at reading C code. It is another not to be able to produce a reproducible usecase. I suggest you devote more effort to communicating the reproducible usecase. —Jim DeLaHunt ___

Re: [FFmpeg-user] Codec copy with -ss before -i and after -i is not documented [was: Re: Why are these different?]

to have the answer easily at hand. Mark's answer must come from studying the code. I suspect Mark will not be delighted with that answer.     —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listi

Re: [FFmpeg-user] '-t' versus '-to'

and 'point' in geometry. 'position' is perhaps that moment in the timeline which occurs at the given timespan after the beginning of the timeline, though it could be the moment which has the given time value relative to time zero in the timeline. Those are just my non-expert g

Re: [FFmpeg-user] Towards better trims & concatenations

can retrieve it. Whatever choice you make, your bug report will be more useful and more likely to get fixed if you base your report on source videos which any developer can reproduce. Best regards, —Jim DeLaHunt ___ ffmpeg-user mailing l

Re: [FFmpeg-user] Towards better trims & concatenations

On 2024-01-07 18:54, Mark Filipak wrote: On 1/7/24 20:24, Jim DeLaHunt wrote: Also, what does "h:\BDMV\STREAM\00305.m2ts" refer to? That's the mother video from which the clone and sons are made. Is that a standard video which I can get a copy of somewhere? Nope. T

Re: [FFmpeg-user] Towards better trims & concatenations

On 2024-01-06 19:24, Mark Filipak wrote: On 1/6/24 17:20, Jim DeLaHunt wrote: But what I am missing here is a concise problem statement. There are many errors. In that case you should file many bug reports. Each report should describe one problem.  Maybe you can include multiple test

Re: [FFmpeg-user] Towards better trims & concatenations

It may be that this test methodology reveals multiple bugs, which might be better pursued if reported separately. Best regards, —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-

Re: [FFmpeg-user] Question about random() expression

Michael: On 2023-12-27 15:20, Michael Koch wrote: Am 27.12.2023 um 23:59 schrieb Jim DeLaHunt: Michael: On 2023-12-27 13:51, Michael Koch wrote: ...I'm using this command line to print four consecutive random numbers: ... I do not have an answer to your question about the behaviour o

Re: [FFmpeg-user] Question about random() expression

ne invocation, which just runs random() and does not generate a grey image or write a file? Hope this clears a way to helpful answers,     —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] DAR/SAR

in a message that seemed all junk. I incorrectly assumed ffmpeg, VLC, and MediaInfo recognized the full set of Matroska and MPEG-4 tags, except, maybe, for the custom tags in the Matroska specification. Thank you for your time and interest. Jim Julian Cogito ergo sum. René Descartes circa 16

[FFmpeg-user] DAR/SAR

I've just finished a dialogue with MediaInfo and there seems to be a difference in the Linux and Windows versions. I also tried using WSL and bash without success. The DAR/SAR are still reported incorrectly.  680x1000 [SAR 1:1 DAR  17:25], where the movie is actually 640x480 and DAR=4:3. For a

[FFmpeg-user] DAR

xelsHeight                      : 480 pixelsDisplay aspect ratio        : 4:3 Thanks Jim J ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org wi

Re: [FFmpeg-user] Sending 2 camera outputs side by side to loopback device

Thanks for the reply. I just rebooted my computer and tried again. There must have been some locked up process that wasn't allowing me to see the loopback device as it now works. On Fri, Nov 25, 2022 at 2:56 AM Michael Koch wrote: > Am 25.11.2022 um 08:02 schrieb Jim Ruxton: > >

[FFmpeg-user] Sending 2 camera outputs side by side to loopback device

I am on Ubuntu 22.04 and trying to combine 2 cameras into one stream that is being sent to a loopback device. The command appears to work but I can't see the stream in any way. I've tried VLC Cheese ffplay guvcview and none of them work. The command I am using is : *ffmpeg -f v4l2 -vcodec rawvideo

Re: [FFmpeg-user] datascope 16-bit

uot;doesn't work" to mean, "ffmpeg terminates prematurely with an error" or "ffmpeg fails to generate output". If you use those phrases when your objection is actually, "runs to completion and generates output, but output is not as helpful as it could be", th

Re: [FFmpeg-user] [EXTERNAL] Re: ffserver

when my goal is to get my security camers back up and running TODAY so I can catch this piece of shit who is robbing me blind? Friend, When you calm down - maybe you might look at https://zoneminder.com/ best wishes ___ ffmpeg-user mailing list ffmpe

Re: [FFmpeg-user] FFmpeg Licence Query

legal risk?  My impression is that neither this email list nor the FFmpeg project attempts to answer such questions. They way to get an answer to that kind of question is to hire a lawyer who knows your situation and your jurisdiction, and let them advise you. I hope this is helpful,   

Re: [FFmpeg-user] multiple flat videos in a equirectangular projection - v360 filter

SPAM On Sun, Jul 17, 2022 at 7:54 AM Michael Koch wrote: > Am 17.07.2022 um 12:09 schrieb Denis Połeć: > > > >> Am 16.07.2022 um 22:12 schrieb Michael Koch < > astroelectro...@t-online.de>: > >> > >> Am 16.07.2022 um 20:57 schrieb Denis Połeć: > Am 16.07.2022 um 11:46 schrieb Paul B Mahol :

Re: [FFmpeg-user] generating `-map` options from ffmpeg-python [was: Re: How to embed subtitles into video using Python]

On 2022-07-13 05:53, Moritz Barsnick wrote: On Wed, Jul 06, 2022 at 13:36:30 -0700, Jim DeLaHunt wrote: On 2022-07-06 02:46, Pavel Yermolenko via ffmpeg-user wrote: In Python there is ffmeg support package: *ffmpeg-python*. ffmpeg-python 0.2.0 <https://pypi.org/project/ffmpeg-pyt

Re: [FFmpeg-user] How to embed subtitles into video using Python

eg -i video.mp4 -i video.srt -map 0:v -map 0:a -c copy -map 1 -c:s:0 mov_text -metadata:s:s:0 language=fra output.mp4 I need to process many files in batch mode, so I decided to use Python. Hello, Pavel. I am Jim. I have done quite a bit of work recently with Python programs which call FFmpeg. L

Re: [FFmpeg-user] Fluorescent White Balance Video Filters

l, and its documentation, and its contributors' behaviour, and the project culture, which are indeed quite stupid. This is useful for users new to FFmpeg to know. If the book describes these aspects accurately as stupid, that makes it a better book. Best regards,    

Re: [FFmpeg-user] avsynctest

agree, Michael. The documentation[1] does not mention which output pad(s) (or input pad(s)) the filter uses. It also fails to give any example of the source in use. It is inadequate IMHO. [1] http://ffmpeg.org/ffmpeg-all.html#avsynctest Best regards,    

Re: [FFmpeg-user] Video Notation, A Video Lingua Franca

e them to heart.     —Jim DeLaHunt [1] https://lists.ffmpeg.org/pipermail/ffmpeg-user/2022-February/054267.html [2] https://lists.ffmpeg.org/pipermail/ffmpeg-user/2022-February/054270.html ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffm

Re: [FFmpeg-user] [EXTERNAL] Re: Video Notation, A Video Lingua Franca

-Original Message- From: ffmpeg-user On Behalf Of Mark Filipak Sent: Tuesday, February 8, 2022 3:42 PM To: ffmpeg-user@ffmpeg.org Subject: [EXTERNAL] Re: [FFmpeg-user] Video Notation, A Video Lingua Franca On 2022-02-08 11:44, Carl Zwanzig wrote: > > On 2/7/2022 10:27 PM, Mark Filipak

Re: [FFmpeg-user] Video Notation, A Video Lingua Franca

sh those people would stop spamming the list with _that_ unrelated stuff. Best regards, —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email f

Re: [FFmpeg-user] Video Notation, A Video Lingua Franca 1+2of11.zip (8.8 KB)

pdate 03.html, you face a problem of getting a new edition to your readers. If only the page was on a server where each reader, on each reading, got the most recent edition of the page…. Best regards,     —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-u

Re: [FFmpeg-user] [EXTERNAL] Re: An object oriented video notation

I would like to read -Original Message- From: ffmpeg-user On Behalf Of Michael Koch Sent: Monday, January 31, 2022 3:38 AM To: ffmpeg-user@ffmpeg.org Subject: [EXTERNAL] Re: [FFmpeg-user] An object oriented video notation Am 31.01.2022 um 05:03 schrieb Mark Filipak (ffmpeg): > > During t

Re: [FFmpeg-user] An object oriented video notation

one" turns out to be. Best regards,   —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] [EXTERNAL] Re: How to get video duration in a script using ffmpeg?

I have used mediainfo mediainfo --Inform="Video;%Duration/String3%" $SrcDir/${f%.*}.* > $HOME/t.txt trt=$(<$HOME/t.txt) ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link abo

Re: [FFmpeg-user] New post

you provide a link to the specific section, please?  Just to make sure that we all are looking at the same documentation. But it is only for Windows and Unix. Does anyone know what the command is for Apple Mac? Cheers, —Jim DeLaHunt ___ ffmpeg

Re: [FFmpeg-user] [EXTERNAL] Frame Drops and Audio Sync Issues

-Original Message- From: ffmpeg-user On Behalf Of James Board via ffmpeg-user Sent: Thursday, December 9, 2021 5:11 PM To: ffmpeg-user@ffmpeg.org Cc: James Board Subject: [EXTERNAL] [FFmpeg-user] Frame Drops and Audio Sync Issues I captured some video from a hardware capture card.  It

Re: [FFmpeg-user] [EXTERNAL] Re: attempting to extract srt from mpg

Hmmm. That message looks suspicious because it should not include the single quotes. I wonder if the issue is shell quoting? Perhaps you should try replacing single quotes (') with double (") or none at all. I am ignorant of 99.9% of windows-related stuff, but it looks to me like your shell is

Re: [FFmpeg-user] [EXTERNAL] Re: attempting to extract srt from mpg

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 in concept? I am unfamiliar with both and struggling t

Re: [FFmpeg-user] audio to text

tSphinx for speech recognition. To enable compilation of this filter, you need to configure FFmpeg with |--enable-pocketsphinx|." Perhaps this will help you make progress figuring out a command line. Best regards, —Jim DeLaHunt ___ ffmpeg-user m

Re: [FFmpeg-user] [EXTERNAL] Re: attempting to extract srt from mpg

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 ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-10ubuntu2) configurati

[FFmpeg-user] attempting to extract srt from mpg

b: bitrate max/min/avg: 17598000/0/0 buffer size: 7995392 vbv_delay: N/A Output #0, srt, to 'mtp_mpg.srt': Output file #0 does not contain any stream thanks Jim Shupert, Jr. Engineering Maintenance [cid:image001.png@01D7C4FF.16EE4EA0] ___ ffmp

[FFmpeg-user] add captions with a srt to mpeg 2 mxf

Thanks much Kind regards Jim shupert ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] [EXTERNAL] Re: Parse a transport stream and get just 1 program

-Original Message- From: ffmpeg-user On Behalf Of Moritz Barsnick Sent: Tuesday, October 12, 2021 10:02 AM To: FFmpeg user discussions Subject: Re: [FFmpeg-user] [EXTERNAL] Re: Parse a transport stream and get just 1 program Hi Jim, On Tue, Oct 12, 2021 at 12:27:15 +, FFmpeg

Re: [FFmpeg-user] [EXTERNAL] Re: Parse a transport stream and get just 1 program

-Original Message- From: Leo Butler Sent: Tuesday, October 12, 2021 7:34 AM To: Shupert, Jim via ffmpeg-user Cc: Shupert, Jim Subject: [EXTERNAL] Re: [FFmpeg-user] Parse a transport stream and get just 1 program "Shupert, Jim via ffmpeg-user" writes: > -Ori

Re: [FFmpeg-user] Parse a transport stream and get just 1 program

-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 just 1 program Friends, I have a file.ts It seems to

[FFmpeg-user] Parse a transport stream and get just 1 program

kb/s And I think I can solve this with mapping Ending with a file.ts with just the 1 video,audio What would be the correct means to achive this? Thanks much! Jim shupert ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/

Re: [FFmpeg-user] FFmpeg build

On 2021-10-05 15:21, jackblev...@mchsi.com wrote: I noticed on the FATE page that an x64 build for windows 10 was successful. Where can I get the source file to build it myself? Jack: Start at . There are instructions on cloning the source code rep

[FFmpeg-user] ffmpeg producing invalid wav headers when merging two wav files

pcm_s16le -f s16le -i-filter_complex "[1:a][2:a] amerge=inputs=2[a]" -map "[a]" This is generated in Java, so I hope I got it right. So, what are we doing wrong? How do we get ffmpeg to generate a valid wav header? Thank you. [signature_199644536] [signature_924782017]

Re: [FFmpeg-user] Integration of ffmpeg

run in background". If that answer helps you, consider upvoting it. Best regards, —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ff

Re: [FFmpeg-user] Where are the list archives? [was: Re: RTMP stream from digital mic : interruptions]

, using a new Subject: line. That is what I am doing here. There are more rules for good use of the FFmpeg lists at https://ffmpeg.org/contact.html#MailingLists . Does this answer your question? Best regards, and I wish you much success using FFmpeg. —Ji

Re: [FFmpeg-user] Possible to change pitch of audio in a downloaded mp4 file?

Bo, I don't have expertise in using FFmpeg with audio. But I do want to point out that what you say you want appears to be different in different parts of your message. Maybe some of these sentences were not quite worded correctly? On 2021-04-28 23:40, Bo Berglund wrote: What I wanted was to

Re: [FFmpeg-user] "vibrance" video filter, default luma coefficients swapped?

On 2021-04-19 00:55, Jim DeLaHunt wrote: On 2021-04-14 22:33, Jim DeLaHunt wrote: ...So, luma = 0.2126 * r + 0.7152 * g + 0.0722 * b, a value in [0.0, 1.0] for r, g, b in [0.0, 1.0] But the default values I see in the FFmpeg vibrance filter are[4]:   rlum (default 0.072186), glum (default

Re: [FFmpeg-user] How to filter time dependent

On 2021-04-22 08:26, Ulf Zibis wrote: …with exact frame count instead unsing -ss, which only counts in seconds? Just to be sure the obvious is stated out loud: the parameter to -ss can be a floating-point number, meaning you can make it as precise as you like, to indicate the time when you e

Re: [FFmpeg-user] "vibrance" video filter, default luma coefficients swapped?

On 2021-04-14 22:33, Jim DeLaHunt wrote: ...So, luma = 0.2126 * r + 0.7152 * g + 0.0722 * b, a value in [0.0, 1.0] for r, g, b in [0.0, 1.0] But the default values I see in the FFmpeg vibrance filter are[4]:   rlum (default 0.072186), glum (default 0.715158), blum (default 0.212656) Thus

[FFmpeg-user] "vibrance" video filter, default luma coefficients swapped?

to 1) (default 0.212656)   alternate     ..FV.T. use alternate colors (default false) This filter has support for timeline through the 'enable' option. % Again, thanks for contributing this "vibrance" filter. It's a nice feature to have. Best regards,   

[FFmpeg-user] Advice on getting help from ffmpeg-user list

ave questions about my advice here, on using this ffmpeg-user list, then replying to this message is a good way to ask them. Best regards,   —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/f

Re: [FFmpeg-user] Mystery error initializing complex filters -- bug?

om: > [AC]tinterlace=mode=drop_odd,split[AA5][AA3][AA1][AC1][AC3], by adding '=5' after 'split', so it becomes: > [AC]tinterlace=mode=drop_odd,split=5[AA5][AA3][AA1][AC1][AC3], I haven't tried this myself. Best regards, —Jim DeLaHunt

Re: [FFmpeg-user] FFmpeg list footer

, there's no harm to experimenting with the list footer contents. I just have low confidence that it will reduce the problem. Best regards, —Jim DeLaHunt [1] https://lists.ffmpeg.org/pipermail/ffmpeg-user/2021-March/052349.html [2] https://lists.ffmpeg.org/pipermail/ffmpeg-user/2021-March/052353.ht

Re: [FFmpeg-user] FFmpeg list footer

UNSUBSCRIBE On Mar 9, 2021, at 7:09 AM, Jim Hollingsworth wrote: How about somebody remove those who have unsubscribed 10 times On Mar 9, 2021, at 6:29 AM, Reindl Harald wrote:  Am 09.03.21 um 12:23 schrieb Peter White: >> sorry, but i fell insulted when i get explained

Re: [FFmpeg-user] How to get he total number of frames

UNSUBSCRIBE ! Best regards, Jim Hollingsworth On Mar 9, 2021, at 6:16 AM, Phil Rhodes via ffmpeg-user wrote:  I hit this once some time ago when creating an application which was intended to assign start timecodes to recorded video files and for which we needed a frame-accurate count

Re: [FFmpeg-user] FFmpeg list footer

How about somebody remove those who have unsubscribed 10 times On Mar 9, 2021, at 6:29 AM, Reindl Harald wrote:  Am 09.03.21 um 12:23 schrieb Peter White: >> sorry, but i fell insulted when i get explained how to walk on each and >> every mail bottom > I wouldn't. It is just an additional

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