Re: [FFmpeg-user] Extract sound from multiple input files

2024-04-29 Thread Michael Koch
Am 29.04.2024 um 11:28 schrieb turgut kalfaoğlu: Hi. I have an interesting case. I need to extract sound from multiple input files,  combine those video files into one, and then re-insert the audio into the combined video file. Unfortunately I need to do them in this order. Extract sounds,

Re: [FFmpeg-user] Possible to speed up/down video while keeping audio pitch?

2024-03-25 Thread Michael Koch
Am 24.03.2024 um 23:30 schrieb Bo Berglund: But is it possible also to modify an mp4 video file to *play* faster/slower than original while keeping the accompanying audio pitch the same? It's possible to change audio length, sample rate and pitch, and also all combinations of these three

Re: [FFmpeg-devel] [PATCH 0/2] Remove SDL2 output devices

2024-02-07 Thread Michael Koch
It works until move or resize the window. yes, that's right. I didn't notice because I didn't try to move or resize the window. My point is: Removing SDL would break many examples that can be found in the internet. Michael ___ ffmpeg-devel

Re: [FFmpeg-devel] [PATCH 0/2] Remove SDL2 output devices

2024-02-06 Thread Michael Koch
I didn't notice any problems with -f sdl2. I just tested again with Windows 11 and the latest FFmpeg build from Gyan, just 2 days old. ffmpeg -re -f lavfi -i testsrc2=s=800x600 -t 10 -f sdl2 - Works without any problems. Michael ___ ffmpeg-devel

Re: [FFmpeg-devel] [PATCH 0/2] Remove SDL2 output devices

2024-02-06 Thread Michael Koch
Removing SDL2 sounds like a very bad idea. There are many examples which are using these output devices, and all these examples would be broken. A quick search in my book http://www.astro-electronic.de/FFmpeg_Book.pdf finds about 40 occurences for "-f sdl" or "-f sdl2". Michael

[dspace-tech] Use Web Importer from Mendeley, Zotero etc. on DSpace 7 pages?

2024-01-28 Thread Michael Koch
Is there a possibility to extend the DSpace frontend to provide the metadata needed by web importer browser plugins like the one from the literature management system Mendeley or Zotero? Currently, I can import an item in Mendeley from a DSpace item page - but the type is "Webpage" and only

Re: [FFmpeg-devel] [PATCH] avutil/eval: Use even better PRNG

2024-01-19 Thread Michael Koch
There is still a small problem with the random generator, but this has nothing to do with the recent changes. If the random() expression is used in the geq filter, then multiple pixels get the same sequence of random numbers. As can be shown with this command, where the frame has only two

Re: [FFmpeg-user] Blend effect with displace filter

2024-01-11 Thread Michael Koch
Am 11.01.2024 um 10:53 schrieb emmanuel martin: I’m experimenting with the ‘displace’ filter, and I’d like to apply my displacement maps with a blend effect on the main track. I’ve tried various things without success, and I haven’t found many examples of using this filter. Is it possible to

Re: [FFmpeg-user] Video in video not from start

2024-01-05 Thread Michael Koch
Am 05.01.2024 um 10:26 schrieb Cecil Westerhof via ffmpeg-user: Ferdi Scholten writes: I want to play a video in a video from a certain point. I understood I could do something like: ffmpeg \ -i input1.mp4 \ -i input2.mp4 \ -filter_complex "

Re: [FFmpeg-user] Video in video not from start

2024-01-05 Thread Michael Koch
Am 05.01.2024 um 07:51 schrieb Ferdi Scholten: I want to play a video in a video from a certain point. I understood I could do something like: ffmpeg  \    -i input1.mp4 \    -i input2.mp4 \    -filter_complex " [0:v][1:v] overlay=25:25:

Re: [FFmpeg-devel] [PATCH 2/2] doc/utils/eval: clarify meaning of random* seed value

2024-01-03 Thread Michael Koch
Possible better algorithm for the random generator, which might fix the problem: eval.c  line 235 if (r == 0)   r = UINT64_MAX/13; else   r = r*1664525+1013904223; Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org

Re: [FFmpeg-devel] [PATCH 2/2] doc/utils/eval: clarify meaning of random* seed value

2024-01-03 Thread Michael Koch
On one hand, it's good that the 10 variables for ld() and st() are initialized with zero. But on the other hand, zero is obviously the worst possible seed value for the random generator. For example, make a 1000x1000 image with red color, and then fill one pixel at a random position with

Re: [FFmpeg-devel] [PATCH 2/2] doc/utils/eval: clarify meaning of random* seed value

2024-01-03 Thread Michael Koch
> Possible address trac issue: http://trac.ffmpeg.org/ticket/10763 I don't like the random generator as it is, because the first two random numbers are very close to zero, as can be shown with this command line: ffmpeg -loglevel repeat -f lavfi -i nullsrc=size=1x1,format=gray -vf

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

2023-12-28 Thread Michael Koch
Am 28.12.2023 um 03:25 schrieb Carl Zwanzig: On 12/27/2023 3:54 PM, Jim DeLaHunt wrote: The documentation says, "x is the index of the internal variable which will be used to save the seed/state." (https://ffmpeg.org/ffmpeg-all.html#Expression-Evaluation). I don't know what it means by "index

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

2023-12-27 Thread Michael Koch
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 of the random() function. However, I cannot reproduce your

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

2023-12-27 Thread Michael Koch
Am 27.12.2023 um 23:04 schrieb Devin Heitmueller: On Wed, Dec 27, 2023 at 4:51 PM Michael Koch wrote: Hi, I'm using this command line to print four consecutive random numbers: ffmpeg -loglevel repeat -f lavfi -i color=gray:size=1x1,format=gray -vf geq=lum='st(0,0.123);print(random(0));print

[FFmpeg-user] Question about random() expression

2023-12-27 Thread Michael Koch
Hi, I'm using this command line to print four consecutive random numbers: ffmpeg -loglevel repeat -f lavfi -i color=gray:size=1x1,format=gray -vf geq=lum='st(0,0.123);print(random(0));print(random(0));print(random(0));print(random(0));0' -frames 1 -y out.png The output is always the same

Re: [FFmpeg-user] Displacement map - glass effect

2023-12-19 Thread Michael Koch
Am 19.12.2023 um 13:56 schrieb emmanuel martin: Hello, Is there a way to do a displacement map in FFMPEG ? I would like to achieve this glass effect - See attached file. yes, please have a look at the "displace" filter or better the "remap" filter. You find many examples in my book:

Re: [FFmpeg-user] Multiple overlays at specific times

2023-12-16 Thread Michael Koch
Am 16.12.2023 um 23:41 schrieb emmanuel martin: Thanks for answering ! I took some time to understand the jpg frequency at 25fps. I made the following modifications and it works very well : ffmpeg -framerate 30 -loop 1 -i participant1.jpg -framerate 30 -i participant1.jpg -filter_complex "\

Re: [FFmpeg-user] Multiple overlays at specific times

2023-12-16 Thread Michael Koch
Am 16.12.2023 um 19:51 schrieb emmanuel martin: I have two inputs that are the same image. The first one, I loop to create a video for 8 seconds. I also create two streams that I will overlay. The background is the normal video, and above it is the same video with a LUT (Look-Up Table) that I

Re: [FFmpeg-user] Multiple overlays at specific times

2023-12-16 Thread Michael Koch
Am 16.12.2023 um 19:51 schrieb emmanuel martin: I have two inputs that are the same image. The first one, I loop to create a video for 8 seconds. I also create two streams that I will overlay. The background is the normal video, and above it is the same video with a LUT (Look-Up Table) that I

Re: [FFmpeg-devel] trac spam

2023-12-03 Thread Michael Koch
Perhaps the regex search is performed on the rendered text as opposed to the source text?  Taking the spam comment on #2104 as an example, the spammer appears to be using the `[ ]` or `[[|]]` markup, therefore `http` does not appear in the rendered text. But on the other hand, the regex

Re: [FFmpeg-devel] trac spam

2023-12-03 Thread Michael Koch
Are you talking based on the source of the email message? I don't have the messages as email. I see only the comments in the trac timeline: https://trac.ffmpeg.org/timeline Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org

Re: [FFmpeg-devel] trac spam

2023-12-03 Thread Michael Koch
I haven't seen the original email so I don't know, but I think it might be a character code issue. Example: Comment 14 in ticket 2104 contains "Great" and "amazing" and "http" in the same line. But the regex filter didn't match. Michael ___

Re: [FFmpeg-devel] trac spam

2023-12-03 Thread Michael Koch
Am 03.12.2023 um 09:39 schrieb Michael Koch: please delete: comment 14 in ticket 2104 comment 6 in ticket 2776 user "bunnybellid" I have updated the regex search patterns. Does anybody know why the last regex seach pattern in the list doesn't work? I thought it should ma

Re: [FFmpeg-devel] trac spam

2023-12-03 Thread Michael Koch
please delete: comment 14 in ticket 2104 comment 6 in ticket 2776 user "bunnybellid" I have updated the regex search patterns. Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To

Re: [FFmpeg-user] Image sequence with part pixelated with a mask

2023-12-02 Thread Michael Koch
Am 02.12.2023 um 05:34 schrieb Ric Hunter: Hello I want to convert an image sequence (jpg) into a mp4 but i want some part of the image sequence to be pixelated based on another mask image sequence (jpg, the white being pixelated, the black being not, but it can be png with alpha I don't mind,

Re: [FFmpeg-user] How to inject video into a live stream?

2023-11-11 Thread Michael Koch
Am 11.11.2023 um 00:35 schrieb James Thornton: When you have two or more live streams, and you want the ability to toggle between the two, such as switching to camera 2's feed on the main screen, how do you do that and what do you need to consider when constructing such a system? I prefer to do

Re: [FFmpeg-user] Requesting colormatrix advice

2023-11-07 Thread Michael Koch
Am 07.11.2023 um 18:23 schrieb Phil Rhodes via ffmpeg-user: So let me get this straight. There's a command line option called colorspace. There's a filter called colorspace which has options including "space," "trc" (meaning "transfer characteristics") and "primaries," as well as several

Re: [FFmpeg-devel] trac spam

2023-11-06 Thread Michael Koch
Please delete also user "bunnylid". He did not yet write anything, but he did register with the same IP adress as the other spammer, only a few minutes earlier. Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org

Re: [FFmpeg-devel] trac spam

2023-11-06 Thread Michael Koch
Please delete: Comment 14 in ticket 2104 Comment 2 in ticket 5154 User "ballid" The duplicated search patterns in regex filter did work as expected (-20 points), but the spammer got +20 points from captcha. I've updated the search patterns. Michael

Re: [FFmpeg-user] Same number of frames dropped and duplicated; What does that mean?

2023-10-29 Thread Michael Koch
Am 29.10.2023 um 18:08 schrieb Ulf Zibis: [Parsed_vfrdet_0 @ 0x55a6d9979b80] VFR:0.232174 (34273/113345) min: 900 max: 14400 avg: 4892 What do the numbers mean, are this nano seconds ? (the ffmpeg docs don't outline this) That's a good question. I also don't know the answer. Michael

Re: [FFmpeg-devel] trac spam

2023-10-27 Thread Michael Koch
Is it possible to make the "Bad Content" page invisible? It would be better if the spammer can't see the filtering rules. Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe,

Re: [FFmpeg-devel] trac spam

2023-10-26 Thread Michael Koch
please delete: comment 12 in ticket 1920 user ""willow" I have updated the regex filter so that it should match all combinations of two keywords, in both orders. Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org

Re: [FFmpeg-devel] trac spam

2023-10-20 Thread Michael Koch
strings that are certain spam, you can just add that twice for double the points lost done. should i add /pipermail/ffmpeg-trac to robots.txt ? is there anyone who googles in these ffmpeg trac archives ? I don't. Michael ___ ffmpeg-devel

[FFmpeg-user] protected whitespace in Wiki?

2023-10-20 Thread Michael Koch
How can I insert protected whitespaces in the Wiki? I've tried and but both don't work. I did also search on this page, but didn't find it: https://trac.ffmpeg.org/wiki/WikiFormatting Thanks, Michael ___ ffmpeg-user mailing list

Re: [FFmpeg-devel] trac spam

2023-10-19 Thread Michael Koch
IIRC each regex give -10 so multiple matches give more. Let's assume we have a long keyword like "concretevictoria". Nobody uses this keyword in a normal text. A false positive is almost impossible. I could search for "concretevictoria", "concretevictori." and "concretevictor.." and get

Re: [FFmpeg-devel] trac spam

2023-10-19 Thread Michael Koch
IIRC each regex give -10 so multiple matches give more. So far, the search strings contain only combinations of keywords, for example "concretevictoria". False positives are almost impossible. I could add shorter keywords, for example "concrete" and "victoria". Then we would get multiple

Re: [FFmpeg-devel] trac spam

2023-10-19 Thread Michael Koch
You would have to read the trac source probably and maybe do local tests tracing through the code what happens but a non spammer posting spam setting up trac locally is easy, it comes with its own deamon you dont even need a webserver That sounds too complicated for me. What about my other

Re: [FFmpeg-devel] trac spam

2023-10-19 Thread Michael Koch
Iam not aware of any delay, did you see a delay ? I did change the search string (2nd from end of list) and 19 minutes later I made a test posting in ticket 2776. I have no idea why the pattern wasn't found. Michael ___ ffmpeg-devel mailing

Re: [FFmpeg-devel] trac spam

2023-10-19 Thread Michael Koch
When I edit the BadContent list, do the new search strings immediately become effective, or must I wait some time? Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit

Re: [FFmpeg-devel] trac spam

2023-10-19 Thread Michael Koch
I've just tested the regex filter with a posting in ticket 2776. This test was not successful. I thought that the second entry from the end of the list should have matched: (?i)regards.{0,5}http In words: Switch to case insensitive, search for "regards" followed by 0 to 5 of any characters,

Re: [FFmpeg-devel] trac spam

2023-10-19 Thread Michael Koch
Please have a look at the Spam Filtering / Monitoring page. One of the spammer's postings was rejected, because it contained a blacklisted pattern in Regex filter and got -10 points. But 20 seconds later the same posting was accepted, because the spammer was successfully verified by Captcha and

[FFmpeg-devel] trac spam

2023-10-18 Thread Michael Koch
please delete: comment 14 in ticket 2104 comment 6 in ticket 2776 user "bristleback" Thanks, Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email

Re: [FFmpeg-user] Change only video

2023-10-16 Thread Michael Koch
Am 16.10.2023 um 13:50 schrieb Cecil Westerhof via ffmpeg-user: For example: if I have a video where I want to change for a short while only the video, but not the audio. Say I have a video A of five minutes B of 3 seconds and C of 5 seconds. At 2:12 I want to use the video of video B instead of

Re: [FFmpeg-user] How to extend this page about screen recording

2023-10-12 Thread Michael Koch
Am 12.10.2023 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 something about how to use this with two monitors (or more). Would that be appreciated? If yes, how

Re: [FFmpeg-user] MP4 with 9 subtitle streams

2023-09-24 Thread Michael Koch
Am 23.09.2023 um 23:31 schrieb Mark Filipak: On Sat, Sep 23, 2023 at 1:44 PM Michael Koch wrote: I have an example in chapter 2.223 in my book: http://www.astro-electronic.de/FFmpeg_Book.pdf Scroll down to "Method 3". Thank you, Michael! I expanded on it. ffmpeg -i "%SOUR

Re: [FFmpeg-user] MP4 with 9 subtitle streams

2023-09-23 Thread Michael Koch
Am 23.09.2023 um 19:24 schrieb Mark Filipak: The question is this: How can I use ffmpeg to put SRT subs into MP4? Is there a direct parameter? I have an example in chapter 2.223 in my book: http://www.astro-electronic.de/FFmpeg_Book.pdf Scroll down to "Method 3". Michael

Re: [FFmpeg-devel] TRAC Spam

2023-09-22 Thread Michael Koch
I just updated the dead link, also added the link to Wikipedia, added some keywords for our favourite spammer, and added short descriptions what (?i) and .? means. Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org

Re: [FFmpeg-devel] TRAC Spam

2023-09-22 Thread Michael Koch
Is it ok if I remove the dead link to Python syntax, and replace it by this link to Wikipedia? https://en.wikipedia.org/wiki/Regular_expression Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org

Re: [FFmpeg-devel] TRAC Spam

2023-09-22 Thread Michael Koch
(?i)customer.?support (?i)customer.?care (?i)customer.?service What's the meaning of (?i) and .? I can't find that in Python syntax description. Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org

Re: [FFmpeg-devel] TRAC Spam

2023-09-22 Thread Michael Koch
I'm not sure if I understood that right. If I add a keyword to the list on this page https://trac.ffmpeg.org/wiki/BadContent then any posting which contains this keyword will get a negative score? And if the score exceeds a threshold, then the posting will be rejected? Is this only for changes

Re: [FFmpeg-user] extract RAW frames into local directory from network camera

2023-09-21 Thread Michael Koch
Am 20.09.2023 um 16:50 schrieb Naveen.B: Hello, Thanks for the sharing the useful links, I tried the way you said, but I am not sure whats happening, I don't see anything happening after executing the command (neither it saves the jpg files in the current path), I need to kill the process in

Re: [FFmpeg-devel] TRAC Spam

2023-09-21 Thread Michael Koch
The last username was "sharselune". Can't we also delete the spam from the archive? http://ffmpeg.org/pipermail/ffmpeg-trac/2023-September/067004.html http://ffmpeg.org/pipermail/ffmpeg-trac/2023-September/067006.html http://ffmpeg.org/pipermail/ffmpeg-trac/2023-September/067058.html

[FFmpeg-devel] TRAC Spam

2023-09-20 Thread Michael Koch
Ticket / Comment 1920 / 12 ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] extract RAW frames into local directory from network camera

2023-09-19 Thread Michael Koch
Am 19.09.2023 um 16:49 schrieb Naveen.B: Hello, udp_data is a directory created to store the extracted RAW frames from the camera. The correct syntax is: ffmpeg -i input output For output, it's not sufficient to specify a folder. You must also specify the filename, which may contain a

Re: [FFmpeg-user] extract RAW frames into local directory from network camera

2023-09-19 Thread Michael Koch
Am 19.09.2023 um 13:11 schrieb Naveen.B: Hello, I have a ethernet camera connected to my laptop hub, it is configured and i can see the streamed Images from the camera using the ffplay command, but when I try to save the RAW Images onto the local directory, I am facing the error,

[FFmpeg-devel] TRAC Spam

2023-09-18 Thread Michael Koch
Ticket / Comment 2104 / 14 2776 / 6 3720 / 9 ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject

Re: [FFmpeg-devel] Trac spam

2023-09-11 Thread Michael Koch
I guess deleting users requires full admin rights, so i guess, just make a list of users which are in need of a deletion and post that and i or less likely some other admin will disable/delete them. Please delete user "selune" in ticket 2104 You and everyone else in the spam fighter group

Re: [FFmpeg-devel] Trac spam

2023-09-11 Thread Michael Koch
I see the "Delete selected as Spam" button, but no "Remove registered user" button. Michael ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email

[FFmpeg-devel] Trac spam

2023-09-10 Thread Michael Koch
new spammer in ticket 2104 ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".

[FFmpeg-devel] Trac spam

2023-09-06 Thread Michael Koch
new spammer in ticket 2776 ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] stream frames using Ethernet camera

2023-09-05 Thread Michael Koch
Am 05.09.2023 um 11:47 schrieb Naveen.B: Hello, How could I achive it by directing ethernet images to the screen? Use ffplay instead of ffmpeg. See also the first example in chapter 24.34.3: https://www.ffmpeg.org/ffmpeg-all.html Michael ___

[FFmpeg-devel] Trac spam

2023-09-03 Thread Michael Koch
please remove the spammers from tickets 1920, 2104, 2776, 3720, 4748 and 5154. ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email

Re: [FFmpeg-user] FFplay: How to show the first frame of a video

2023-08-14 Thread Michael Koch
Am 14.08.2023 um 08:30 schrieb Gyan Doshi: On 2023-08-14 11:47 am, Michael Koch wrote: Am 14.08.2023 um 07:41 schrieb Michael Koch: Hello, I'd like to make a batch file for FFplay that shows only the first frame of a video until the window is closed. It should also work for still images

Re: [FFmpeg-user] FFplay: How to show the first frame of a video

2023-08-14 Thread Michael Koch
Am 14.08.2023 um 07:41 schrieb Michael Koch: Hello, I'd like to make a batch file for FFplay that shows only the first frame of a video until the window is closed. It should also work for still images. This command line works for still images and for most videos, but not for all: ffplay

[FFmpeg-user] FFplay: How to show the first frame of a video

2023-08-13 Thread Michael Koch
Hello, I'd like to make a batch file for FFplay that shows only the first frame of a video until the window is closed. It should also work for still images. This command line works for still images and for most videos, but not for all: ffplay -loop 0 -t 0 -x 500 -an %1 Below is the console

[dspace-tech] Re: Permalink url incorrect

2023-08-08 Thread Michael Koch
The information is stored in the meta attributes of the items (when these are created) - you have to change it there. Poulter, Dale schrieb am Dienstag, 8. August 2023 um 02:39:10 UTC+2: > Good afternoon, > > > > We are working to upgrade to 7.5. The BE is working well using apache >

[dspace-tech] Re: Problem with path displayed in URI

2023-08-08 Thread Michael Koch
The information is stored in the meta attributes of the items (when these are created) - you have to change it there. Michel Montenegro schrieb am Dienstag, 8. August 2023 um 15:58:33 UTC+2: > Where do I change the URI of posts and pages in DSpace? > It is showing "localhost" or the previous ip

Re: [Extern] [dspace-tech] how to disable browse.comcol.by.srsc in 7.6?

2023-07-07 Thread Michael Koch
.23 um 11:33 schrieb Michael Koch: > > In the 7.6 user interface there is an additional tab in browsing > > communities and collections, using the srsc taxonomy? > > got the same problem, this is not bug but a "feature". > Would prefer this to be configurable at th

[dspace-tech] how to disable browse.comcol.by.srsc in 7.6?

2023-07-07 Thread Michael Koch
In the 7.6 user interface there is an additional tab in browsing communities and collections, using the srsc taxonomy? Is there a way to switch this off? I checked all server side configuration (webui.*) but did not find a clue. https://wiki.lyrasis.org/display/DSDOC7x/Browse

Re: [FFmpeg-devel] trac spam

2023-05-15 Thread Michael Koch
please have a look at ticket 2104 ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-devel] [PATCH] avfilter: add zoneplate video source filter

2023-05-10 Thread Michael Koch
Well, I can't see how it looks now, but the sequence white - gray - white (which is impossible in a sine wave) should no longer be there, because cos(x) = cos(-x). ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org

Re: [FFmpeg-devel] [PATCH] avfilter: add zoneplate video source filter

2023-05-10 Thread Michael Koch
ffmpeg -f lavfi -i zoneplate=kx2=320:ky2=240,format=gray -frames 1 -y out.png When you draw a line through the center, you have black - gray - white - gray - white - gray -black which means the sine wave changes its sign in the center. That's why zoneplates are normally calculated with cos()

Re: [FFmpeg-devel] [PATCH] avfilter: add zoneplate video source filter

2023-05-10 Thread Michael Koch
Isn't it better to use cos() instead of sin()? With sin() there is a discontinuity in the center. ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email

Re: [FFmpeg-user] why reducing the resolution a percentage doesn't reduce the video the same proportion?

2023-03-14 Thread Michael Koch
Am 14.03.2023 um 10:37 schrieb Natalia Molinero Mingorance: I'm using this command: -y -r -i $inVideoUri -movflags faststart -c:v libx265 -s $videoResolution -c:a copy -preset ultrafast $outPutUri" However, if "videoResolution" is a 50% of the original video resolution, the resulting file

Re: [FFmpeg-user] Selecting colors of the waveform

2023-03-10 Thread Michael Koch
Am 10.03.2023 um 06:01 schrieb Marcin Borkowski: On 2023-03-08, at 19:15, Michael Koch wrote: Am 08.03.2023 um 18:48 schrieb Marcin Borkowski: Hi all, I'm fairly new to ffmpeg, so sorry, if this is something obvious. (I'd also appreciate any pointers to the docs - I haven't read them all

Re: [FFmpeg-user] Selecting colors of the waveform

2023-03-08 Thread Michael Koch
Am 08.03.2023 um 18:48 schrieb Marcin Borkowski: Hi all, I'm fairly new to ffmpeg, so sorry, if this is something obvious. (I'd also appreciate any pointers to the docs - I haven't read them all, of course, but I _did_ try to find the answer to my questions there.) I know that I can create a

Re: [FFmpeg-user] filter_complex with 2 images generates 3 files instead of one

2023-03-01 Thread Michael Koch
Am 01.03.2023 um 10:55 schrieb Gabriel Dina: 1 frame, indeed, but is the first image without logo and info. Maybe it is a way to get the last frame? In your example all three inputs are images, so the output can only one image. If the first input is a video, you could add -ss 5 before this

Re: [FFmpeg-user] filter_complex with 2 images generates 3 files instead of one

2023-03-01 Thread Michael Koch
Am 01.03.2023 um 10:39 schrieb Gabriel Dina: Updated command: ffmpeg -i *uploads/test.png* -i ./assets/logo.png -i ./assets/telefon.png -filter_complex

Re: [FFmpeg-user] filter_complex with 2 images generates 3 files instead of one

2023-03-01 Thread Michael Koch
Am 01.03.2023 um 10:23 schrieb Michael Koch: Am 01.03.2023 um 10:12 schrieb Gabriel Dina: ffmpeg -i uploads/image.mp4 -i ./assets/logo.png -i ./assets/info.png -filter_complex "[1][0]scale2ref=w='iw *1/5':h='ow/mdar'[v1];[2][0]scale2ref=w='iw*9/10':h='ow/mdar'[v2];[0][v1]overlay=m

Re: [FFmpeg-user] filter_complex with 2 images generates 3 files instead of one

2023-03-01 Thread Michael Koch
Am 01.03.2023 um 10:12 schrieb Gabriel Dina: ffmpeg -i uploads/image.mp4 -i ./assets/logo.png -i ./assets/info.png -filter_complex "[1][0]scale2ref=w='iw

Re: [FFmpeg-user] Repeatable resolution issue exporting mxfs, 1080p is coming out as 1088p

2023-02-27 Thread Michael Koch
Am 27.02.2023 um 16:52 schrieb Michael Koch: Am 27.02.2023 um 16:34 schrieb Michael Koch: Am 27.02.2023 um 16:07 schrieb William Jones: Hi All, I'm having a big problem with ffmpeg at the moment and wanted to pry the minds of anyone who may know. Trying to export a image sequence as a .mxf

Re: [FFmpeg-user] Repeatable resolution issue exporting mxfs, 1080p is coming out as 1088p

2023-02-27 Thread Michael Koch
Am 27.02.2023 um 16:34 schrieb Michael Koch: Am 27.02.2023 um 16:07 schrieb William Jones: Hi All, I'm having a big problem with ffmpeg at the moment and wanted to pry the minds of anyone who may know. Trying to export a image sequence as a .mxf file at 1920x1080, DnxHD 115. Unfortunately

Re: [FFmpeg-user] Repeatable resolution issue exporting mxfs, 1080p is coming out as 1088p

2023-02-27 Thread Michael Koch
Am 27.02.2023 um 16:07 schrieb William Jones: Hi All, I'm having a big problem with ffmpeg at the moment and wanted to pry the minds of anyone who may know. Trying to export a image sequence as a .mxf file at 1920x1080, DnxHD 115. Unfortunately every time I try, the resulting file comes out

Re: [FFmpeg-user] ddagrab

2023-02-20 Thread Michael Koch
Am 20.02.2023 um 15:50 schrieb Michael Koch: Am 20.02.2023 um 15:46 schrieb Gyan Doshi: On 2023-02-20 07:58 pm, Michael Koch wrote: Am 20.02.2023 um 15:18 schrieb Gyan Doshi: On 2023-02-20 07:33 pm, Michael Koch wrote: Am 20.02.2023 um 14:54 schrieb Gyan Doshi: On 2023-02-20 07:15 pm

Re: [FFmpeg-user] ddagrab

2023-02-20 Thread Michael Koch
Am 20.02.2023 um 15:46 schrieb Gyan Doshi: On 2023-02-20 07:58 pm, Michael Koch wrote: Am 20.02.2023 um 15:18 schrieb Gyan Doshi: On 2023-02-20 07:33 pm, Michael Koch wrote: Am 20.02.2023 um 14:54 schrieb Gyan Doshi: On 2023-02-20 07:15 pm, Michael Koch wrote: Am 20.02.2023 um 14:29

Re: [FFmpeg-user] ddagrab

2023-02-20 Thread Michael Koch
Am 20.02.2023 um 15:18 schrieb Gyan Doshi: On 2023-02-20 07:33 pm, Michael Koch wrote: Am 20.02.2023 um 14:54 schrieb Gyan Doshi: On 2023-02-20 07:15 pm, Michael Koch wrote: Am 20.02.2023 um 14:29 schrieb Gyan Doshi: On 2023-02-20 06:27 pm, Michael Koch wrote: Am 20.02.2023 um 13:50

Re: [FFmpeg-user] ddagrab

2023-02-20 Thread Michael Koch
Am 20.02.2023 um 14:54 schrieb Gyan Doshi: On 2023-02-20 07:15 pm, Michael Koch wrote: Am 20.02.2023 um 14:29 schrieb Gyan Doshi: On 2023-02-20 06:27 pm, Michael Koch wrote: Am 20.02.2023 um 13:50 schrieb Gyan Doshi: On 2023-02-20 06:03 pm, Michael Koch wrote: Hello, I'm testing

Re: [FFmpeg-user] ddagrab

2023-02-20 Thread Michael Koch
Am 20.02.2023 um 14:54 schrieb Gyan Doshi: On 2023-02-20 07:15 pm, Michael Koch wrote: Am 20.02.2023 um 14:29 schrieb Gyan Doshi: On 2023-02-20 06:27 pm, Michael Koch wrote: Am 20.02.2023 um 13:50 schrieb Gyan Doshi: On 2023-02-20 06:03 pm, Michael Koch wrote: Hello, I'm testing

Re: [FFmpeg-user] ddagrab

2023-02-20 Thread Michael Koch
Am 20.02.2023 um 14:29 schrieb Gyan Doshi: On 2023-02-20 06:27 pm, Michael Koch wrote: Am 20.02.2023 um 13:50 schrieb Gyan Doshi: On 2023-02-20 06:03 pm, Michael Koch wrote: Hello, I'm testing the ddagrab filter with the example from the documentation. I did only add -t 10 -y

Re: [FFmpeg-user] ddagrab

2023-02-20 Thread Michael Koch
Am 20.02.2023 um 13:50 schrieb Gyan Doshi: On 2023-02-20 06:03 pm, Michael Koch wrote: Hello, I'm testing the ddagrab filter with the example from the documentation. I did only add -t 10 -y, but that can't be the problem. ffmpeg -f lavfi -i ddagrab -c:v h264_nvenc -cq 18 -t 10 -y out.mp4

[FFmpeg-user] ddagrab

2023-02-20 Thread Michael Koch
Hello, I'm testing the ddagrab filter with the example from the documentation. I did only add -t 10 -y, but that can't be the problem. ffmpeg -f lavfi -i ddagrab -c:v h264_nvenc -cq 18 -t 10 -y out.mp4 What does this error message mean? [h264_nvenc @ 01f5f7bbf980] OpenEncodeSessionEx

Re: [FFmpeg-user] Write audio volume info to file

2023-02-16 Thread Michael Koch
Am 16.02.2023 um 12:31 schrieb Alexander Bieliaev via ffmpeg-user: How can I analyze the volume of input audio (in dB) and write that to the text file? If you want to know the mean and maximum volume in the whole stream, that can be done with the volumedetect filter. Or do you want to know

Re: [FFmpeg-user] Question about "normalize" filter

2023-02-07 Thread Michael Koch
Am 30.01.2023 um 20:45 schrieb Paul B Mahol: filter supports up to 16bit rgb(a), adding float would be trivial. patch welcome Thanks for adding float to colorlevels. Is there any filter for gamma correction with float? Does the geq filter support float? Yes. Gamma correction with float

Re: [FFmpeg-user] Replace part of the audio

2023-02-01 Thread Michael Koch
Am 01.02.2023 um 09:39 schrieb Alexander Bieliaev via ffmpeg-user: Thanks, it kinda worked for me, but it seems like it's dependent on the length of the inserted audio. For example if I have a 2 minute audio and try to replace some parts of it with audio that is 1 minute long, for the first

Re: [FFmpeg-user] Replace multiple parts of audio with beeps

2023-02-01 Thread Michael Koch
Am 01.02.2023 um 11:27 schrieb Alexander Bieliaev via ffmpeg-user: How can I replace multiple parts of audio with generated beeps? I tried next command: -filter_complex " [0]volume=0:enable='between(t,10,15)+between(t,20,30)'[main]; sine=f=800, pan=stereo|FL=c0|FR=c0,

Re: [FFmpeg-user] Question about "normalize" filter

2023-01-30 Thread Michael Koch
Am 30.01.2023 um 12:52 schrieb Paul B Mahol: On 1/30/23, Michael Koch wrote: Am 30.01.2023 um 10:29 schrieb Paul B Mahol: You wrote: "With default parameters and just strength(2) set to your values, so the darkest pixels are left untouched." However I want that black remains

Re: [FFmpeg-user] Question about "normalize" filter

2023-01-30 Thread Michael Koch
Am 30.01.2023 um 10:29 schrieb Paul B Mahol: You wrote: "With default parameters and just strength(2) set to your values, so the darkest pixels are left untouched." However I want that black remains untouched. That's not the same, because the darkest pixels in the image aren't black. The

Re: [FFmpeg-user] Question about "normalize" filter

2023-01-30 Thread Michael Koch
Am 30.01.2023 um 08:47 schrieb Paul B Mahol: On Mon, Jan 30, 2023 at 12:23 AM Michael Koch wrote: Am 29.01.2023 um 23:36 schrieb Paul B Mahol: On 1/29/23, Michael Koch wrote: Am 29.01.2023 um 23:07 schrieb Paul B Mahol: On 1/29/23, Michael Koch wrote: Am 29.01.2023 um 22:05 schrieb Paul

  1   2   3   4   5   6   7   8   9   10   >