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

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

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

at') .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 internal ffmpeg problem, but I’m far from an expert at compiling. Any idea what is wrong? Jim __

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

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

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

you 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 ___ ffmp

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'

be the moment which has the given time value relative to time zero in the timeline. Those are just my non-expert guesses. I will be interested to hear the correct answer(s). And I wish we could look up those answer(s) in the FFMpeg documentation. Good question! —Jim DeLaHunt __

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

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 list ffmpeg-user

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. Tha

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

y 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-user

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

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

is 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 1685 “I

[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

[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: > > I am

[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

ot;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", then your message gets diluted by misunde

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

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

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. Let me

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

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, —Jim DeLaHunt

Re: [FFmpeg-user] avsynctest

e, 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,     --Ji

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

.     —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://ffmpeg.org/mailman

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

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 ffmpeg-user-requ

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

ce 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-user@ffmpeg.org h

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

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

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

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. 

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

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

Re: [FFmpeg-user] audio to text

ocketSphinx 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)

[FFmpeg-user] attempting to extract srt from mpg

#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] ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-use

[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

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

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/listinfo/f

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

[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

n 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 ffmpeg-

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

st, 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

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?

fault 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,     —Jim DeLaHunt ___

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

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/ffmpeg-user To unsubscrib

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

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 ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.

Re: [FFmpeg-user] FFmpeg list footer

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.html . Do not top

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 explain

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

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

Unsubscribe!!! On Mar 9, 2021, at 4:41 AM, Nicolas George wrote: Peter White (12021-03-09): > If anybody on this list knows a better one, step up, please. ffprobe, of course. Regards, -- Nicolas George ___ ffmpeg-user mailing list

Re: [FFmpeg-user] repeat a frame

s, a near-maximum PTS of 9 billion billion indicates a near-maximum time offset of a little over 396,000 years. Most of your films will likely be shorter than that. Best regards, —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org h

Re: [FFmpeg-user] repeat a frame

initiated. 1. https://lists.ffmpeg.org/pipermail/ffmpeg-user/2021-February/051961.html On 2021-02-14 17:28, Paul B Mahol wrote: You need TB aka timebase too. TB is rational. PTS is 64bit integer. 2. https://lists.ffmpeg.org/pipermail/ffmpeg-user/2021-February/052097.html On 2021-02-22 21:01, Jim

Re: [FFmpeg-user] filter pipeline 'PTS' -- int64_t?

in the filter pipeline as 'PTS' is unknown to me. I don't know how to answer this question. See above about the concept of a "filter pipeline". Best regards,   —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.

[FFmpeg-user] What the 'fps' video filter does. [was: Re: Matroska (.mkv) time resolution [was: Re: How can I force a 360kHz time base? ] ]

frames. You can choose the method for rounding from input PTS to output PTS. This affects which frames fps keeps, repeats, or drops.…" [1] http://ffmpeg.org/ffmpeg-all.html#fps-1 [2] http://blog.jdlh.com/en/2020/04/30/ffmpeg-fps-documented/ Best regards

Re: [FFmpeg-user] Matroska (.mkv) time resolution [was: Re: How can I force a 360kHz time base? ]

You asked questions. You got accurate answers. You appear to be getting the message that some of your beliefs about FFmpeg arithmetic and MKV accuracy are incorrect. If you want to stick with it until you prove it to yourself, that is up to you. Best regards, —Ji

Re: [FFmpeg-user] Matroska (.mkv) time resolution [was: Re: How can I force a 360kHz time base? ]

On 2021-02-26 22:08, Mark Filipak (ffmpeg) wrote: On 2021-02-27 00:55, Jim DeLaHunt wrote: On 2021-02-26 18:36, Mark Filipak (ffmpeg) wrote: That's exactly the point. It is not constant because ffmpeg calculates frame times in integer milliseconds, and thereby truncates or rounds.… Mark

[FFmpeg-user] Matroska (.mkv) time resolution [was: Re: How can I force a 360kHz time base? ]

On 2021-02-26 18:36, Mark Filipak (ffmpeg) wrote: On 2021-02-26 20:42, Jim DeLaHunt wrote: On 2021-02-26 17:24, Mark Filipak (ffmpeg) wrote: 'ffmpeg -i input.mkv -vf "showinfo" -codec:a copy -codec:s copy -dn output.mkv' [Parsed_showinfo_0 @ 013c877124c0] n:   1 pts: 33

Re: [FFmpeg-user] How can I force a 360kHz time base?

lue in AVFilterLink, points away from this claim. The evidence you have presented so far does not prove this claim. The evidence could be explained by your specific file input1.mkv having a varying frame rate, rounded to 1ms increments.   —Jim DeLaH

Re: [FFmpeg-user] How can I force a 360kHz time base?

On 2021-02-26 17:24, Mark Filipak (ffmpeg) wrote: On 2021-02-26 20:05, Jim DeLaHunt wrote: Does input1.mkv in fact have a constant frame rate of 24/1.001 frames/second? No, it has a constant frame rate of 30/1.001 frames/second. Sorry, my mistake.  I should have said, "Does input

Re: [FFmpeg-user] How can I force a 360kHz time base?

On 2021-02-26 16:53, Mark Filipak (ffmpeg) wrote: …What I'm suggesting is that ffmpeg convert to a single, 36Hz time base for all videos, for all time. Then, rounding errors would be *zero*. PTSs would be exact. … As I told you back on 23. February, ffmpeg uses a timebase that is a

Re: [FFmpeg-user] How can I force a 360kHz time base?

Obviously.   —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] ffmpeg-lambda-layer and concat protocol

. The FFmpeg-user list archive behaves similarly to a number of other list archives. The same approach may work for you with other lists. Good luck concatenating your mp3 files! Best regards, —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-u

[FFmpeg-user] Getting alsa xruns when sending video to v4l2 device and alsa

avoids xruns but the sound and video are way out of sync. ffmpeg -re -i VideoInput.m4v -map 0:v -pix_fmt yuyv422 -f v4l2 /dev/video0 -f pulse default Thanks, Jim ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman

Re: [FFmpeg-user] PTS resolution[s]

On 2021-02-22 21:35, Mark Filipak (ffmpeg) wrote: On 2021-02-23 00:01, Jim DeLaHunt wrote: The Presentation Time Stamp (PTS) value which FFmpeg associates with video frames and audio data is a 64-bit integer. There is an associated time base attribute for each video or audio stream, which

Re: [FFmpeg-user] PTS resolution

whatever I got wrong. 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

Re: [FFmpeg-user] Naming chapters in Matroska video

to pretend that the documentation explains fully, when it does not. [1] http://ffmpeg.org/ffmpeg-all.html#Advanced-options, search for "-map_metadata" [2] http://ffmpeg.org/ffmpeg-all.html#Advanced-options, search for "-map_chapters" [3] http://ffmpeg.org/ffmpeg-all.html#Metadata-1 B

[FFmpeg-user] "most insulting comment" [was: Re: Filter documentation -- PTSs]

is different than an insulting comment. For more on the painful truth, see for example the thread starting at <https://lists.ffmpeg.org/pipermail/ffmpeg-user/2021-February/051686.html <https://lists.ffmpeg.org/pipermail/ffmpeg-user/2021-February/051686.html>>. Best regards, —

Re: [FFmpeg-user] Filter documentation -- PTSs

a few days". There are so many documentation sections which so badly need improvement. 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".

[FFmpeg-user] List etiquette [was: Re: alternating checkerboard]

not do it here. :-) Sorry, I couldn't resist. —Jim "I too have experienced discouragement here" DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above

Re: [FFmpeg-user] For discussion: A better video notation.

ould be nice if the notation said that, so that we could distinguish it from the number, "239/10". Best regards, —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user

Re: [FFmpeg-user] Filter just the 1st audio channel of the input.

something similar would work for your purpose, only using -ac 1 instead of -ac 2 as I do? Just an idea. Jim ___ 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] "instead of complaining, submit a patch" [was: Re: minterpolate problem]

at the moment.     —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".

[FFmpeg-user] "instead of complaining, submit a patch" [was: Re: minterpolate problem]

] https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2017-November/219925.html [4] https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2017-November/220095.html My experience has persuaded me that "instead of complaining, submit a patch" is not

[FFmpeg-user] Subtitle Error - Suggestion

e 'invalid subtitle structure' or 'fix your subtitle file stupid'. ;)  Really, just change the wording to be something relevant to what is wrong in order to make it easier to figure out what's wrong. Jim ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg

Re: [FFmpeg-user] minterpolate problem

On 2021-01-26 16:59, Mark Filipak (ffmpeg) wrote: Note error at the end of the report. I suspect the problem is that 'fps=6/1001:mi_mode=mci=mc_mode=obmc:scd=fdiff:scd_threshold=10' needs some sort of internal delimiters, but I can't figure out what they would be. ffmpeg -i SOURCE -map

Re: [FFmpeg-user] minterpolate problem

On 2021-01-26 16:59, Mark Filipak (ffmpeg) wrote: Note error at the end of the report. I suspect the problem is that 'fps=6/1001:mi_mode=mci=mc_mode=obmc:scd=fdiff:scd_threshold=10' needs some sort of internal delimiters, but I can't figure out what they would be. ffmpeg -i SOURCE -map

Re: [FFmpeg-user] Troublemaker in bugtracker

On 2021-01-25 16:30, Paul B Mahol wrote: On Tue, Jan 26, 2021 at 1:18 AM Phil Rhodes via ffmpeg-user < ffmpeg-user@ffmpeg.org> wrote: … When you have people who are determined to treat others with contempt and hostility as a matter of course, who reject even the most well-meaning offers of

Re: [FFmpeg-user] overlaying animated PNG, doesn't loop

of FFmpeg's documentation isn't very good at explaining FFmpeg to users who haven't read the code.     —Jim DeLaHunt ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above

Re: [FFmpeg-user] Stream specifier ':a' in filtergraph Error

nvocation which will generate silent audio streams for input files which have none. The details of this should be in a separate thread with a separate Subject: line. I hope this is helpful,    —Jim DeLaHunt, software engineer, Vancouver Canada __

Re: [FFmpeg-user] Reduce ffmpeg response

rt Hope this helps, —Jim DeLaHunt, software engineer, Vancouver, Canada ___ 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...@ffm

Re: [FFmpeg-user] where to post suggestion for the documentation?

in which it is intended. You are damaging yourselves and the project and it is completely unnecessary. +1. Thank you for stating this, Phil. —Jim DeLaHunt, software engineer, Vancouver, Canada ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

Re: [FFmpeg-user] A comment about this community

On 2020-11-02 15:57, amindfv--- via ffmpeg-user wrote: … But please, I don't know what's more likely to discourage a newcomer: one person acting rudely or another person convincing them that the entire community is a bunch of jerks…. There is a third way to discourage the newcomer: a few

Re: [FFmpeg-user] where to post suggestion for the documentation?

searching for help will find your insight that way. Sorry to be a bearer of bad news. Thank you again for your efforts to share what you have learned. Many readers of this list appreciate it. —Jim DeLaHunt, software engineer, Vancouver, Canada __

Re: [FFmpeg-user] A comment about this community (was: RE: sudo: ffmpeg: command not found)

linked to, @JayTheLinuxGuy makes a very good suggestion. On a support channel, the people with knowledge should either provide support, or choose not to reply. But they should not inject rudeness. Best regards,     —Jim DeLaHunt, software engineer, Vancouver, Canada All the best, Marc

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