Re: [Mlt-devel] Problem with sound when exporting playlist with blanks

frames for me. /Rickard On Mon, Jul 24, 2023, at 06:48, Rickard Lindberg wrote: Thanks for your support! This workaround works fine for me. /Rickard On Sun, Jul 23, 2023, at 00:22, Brian Matherly wrote: > mlt-melt color:red in=0 out=25 -blank 25 color:blue in=0 out=25 -consumer > av

Re: [Mlt-devel] Problem with sound when exporting playlist with blanks

guess is that I need to do something different in my code. Question is what... /Rickard On Thu, Jul 20, 2023, at 22:16, Brian Matherly wrote: Your MLT is over 2 years old. Can you try with a newer version? Also, it would be helpful to reproduce with a melt command so that others can easily rec

Re: [Mlt-devel] Field order broken on rendering

Here are some initial comments: Since mlt_tractor_pass_properties only operates on frames, maybe it should be a member of mlt_frame? mlt_tractor_pass_properties should probably have a more descriptive name. Which properties specifically does it pass? Could we convert the function to a single

Re: [Mlt-devel] Problem with sound when exporting playlist with blanks

kard On Thu, Jul 20, 2023, at 22:16, Brian Matherly wrote: Your MLT is over 2 years old. Can you try with a newer version? Also, it would be helpful to reproduce with a melt command so that others can easily recreate the problem. ~Brian On Thursday, July 20, 2023 at 03:00:45 PM CDT, Rickard

Re: [Mlt-devel] Field order broken on rendering

The cairoblend transition has an optimization that if the b frame is opaque, it will never request the a frame imagehttps://github.com/mltframework/mlt/blob/master/src/modules/frei0r/transition_frei0r.c#L61 When this optimization is triggered, get_frame is never called on the a frame. As a

Re: [Mlt-devel] Problem with sound when exporting playlist with blanks

Your MLT is over 2 years old. Can you try with a newer version? Also, it would be helpful to reproduce with a melt command so that others can easily recreate the problem. ~Brian On Thursday, July 20, 2023 at 03:00:45 PM CDT, Rickard Lindberg wrote: Hi, I'm having trouble exporting a

Re: [Mlt-devel] Fwd: Bug#1038506: libmlt7: Contains a plugin for an obsolete version of SDL

If you want to disable SDL1, the packager can add "-DMOD_SDL1=OFF" to their cmake call.This is how Shotcut does it: https://github.com/mltframework/shotcut/blob/master/scripts/build-shotcut.sh#L766C161-L766C175 You should be asking the dependency packages if they are using the SDL1 module.

Re: [Mlt-devel] Need guidance in implementing mlt

> Currently what I am thinking is of using swig for the code conversion that >would change my java code to c/c++ code that mlt will use. I hope you mean the other way around - make Java bindings for MLT so that you Java application can use it. MLT already has Java bindings using SWIG:

Re: [Mlt-devel] optimizing MLT's track compositing

> 1. identify all YUV only services > 2. convert some of these to also handle RGB(A) I am willing to participate in some of these. In particular, if someone identifies a service that is causing extra conversions, I can work on updating it to support RGB/RGBA. > 3. find suitable replacements

Re: [Mlt-devel] optimizing MLT's track compositing

Thanks for investigating this topic. Here are some comments from me: 1) I support an attempt to reduce unnecessary image format conversions. Your focus is on track compositing. But it would also be good if we could find a general pattern that would work for filters as well. Some filters can

Re: [Mlt-devel] Have added an SR filter, but exported video can be incorrect

I think you will need to give more information about what you are trying to accomplish. I do not understand why you would make a filter to double the dimensions of the image. In MLT, the consumer expects to receive the image size that it has requested. The producer has normalize filters (like

Re: [Mlt-devel] Consumer as producer

g.pngwhere the videos are properly stacked, but the profile for SDL (720p 16:9) is not honored as I would expect.  For sure this is due to my poor understanding of profile's behavior. I'd like to apply the target profile at the very end of the process. El vie, 7 ene 2022 a las 3:00, Brian Mat

Re: [Mlt-devel] Consumer as producer

I would suggest: 1) Create a producer to open V1 (it does not matter the profile)2) Query V1 for the size3) Close V1 (delete the producer)4) Create a producer to open V2 (it does not matter the profile)5) Query V2 for the size6) Close V2(delete the producer)7) Calculate the profile that you

Re: [Mlt-devel] Stacking videos vertically

For this scenario (and any like it), I strongly recommend to not start with code. Even for my own coding projects I do not start with code. Start with Shotcut or Kdenlive and use the tool to visually achieve what you want. After you get the result that you are looking for in the graphical

Re: [Mlt-devel] Filter affine

expect in accordance with https://www.mltframework.org/plugins/FilterAffine/#transition. Any clue about what might be going on? El jue, 30 dic 2021 a las 19:53, José María García Pérez () escribió: I was expecting a rotated image. The output was the video unmodified. El jue, 30 dic 2021 a las 1

Re: [Mlt-devel] Filter affine

> My first attempt wasn't very successful What result did you expect, and what was the actual result? On Thursday, December 30, 2021, 12:28:42 PM CST, José María García Pérez wrote: I wasn't aware about Shotcut doing so. Good to know. My first attempt wasn't very successful. I did the

Re: [Mlt-devel] pixbuf

var pro:Producer = newFactoryProducer(p, null, "./resources/pexels-pixabay-97082.jpg") var pro:Producer = newFactoryProducer(p, null, "./resources/pexels-pixabay-97082.svg") The loader will figure out the best producer based on the file type. The heuristic is

Re: [Mlt-devel] C lang examples

I think you have been reading the documentation, so I suppose you have already seen these pages:https://www.mltframework.org/docs/scriptbindings/ https://www.mltframework.org/docs/codeexamples/ I think the melt CLI application is probably your best option for C examples. I do not have any

Re: [Mlt-devel] Compiling basic C program

> ```> Segment violated ('core' generated)> ``` Nothing jumps out at me. I would suggest to run it in GDB and post the stack trace. ~Brian On Tuesday, November 9, 2021, 10:31:28 AM CST, José María García Pérez wrote: I have the following example:```c#include #include #include int

Re: [Mlt-devel] Clock time to frame number?

> Am I correct that MLT translates from these clock times to frame numbers and >uses frame numbers for everything internally? Yes. "frame number" is often referred to as "position" in the code. I think the two terms are used interchangably. >  How does rounding work? The code is

Re: [Mlt-devel] It's hard to work without information

> How would you proceed? I would go to the source and follow the trail:https://sourceforge.net/p/sox/code/ci/master/tree/src/biquads.c#l412 Shotcut has a Bass/Treble filter that uses Ladspa. You could download Shotcut, use the filter, and inspect the .mlt file to see how it works. Patches to

Re: [Mlt-devel] Suitable Use case?

> Hi, > > I'm trying to create a mosaic from several video files. I'll need to add >and remove videos over time and change the position and size of videos.> > 1. >Can I use MLT XML for this? Yes > 2. Is it possible to create the mosaic and output to a file as fast as > possible instead of

Re: [Mlt-devel] Future of higher bit depth/dynamic range/etc

>  the final film needs to be in 10-bit color HDR is not in your requirement? If you are allowed to use 709 colorspace, then I do not understand the 10bit requirement. MLT already supports RBG which is 24 bits per pixel. YUV 4:2:2 @ 10bits is only 20 bits per pixel. Maybe you could use RGB

Re: [Mlt-devel] future of frame-threading in MLT

As a reminder, frame threading is when abs(consumer.get_int("real_time")) > 1. There are some problems with it. 1. sometimes there is a crash 2. image artifacts due to race conditions I think that the main reason for this is that we try to allow each service instance to be running

Re: [Mlt-devel] 10-bit color?

at 04:40:54AM +, Brian Matherly wrote: >  Yes. I expect that would get you very far. Then, you could probably do a >round trip as long as there are no conversions needed between producer and >consumer. Awesome. And this would be enough, right, for Edit Decision List-styl

Re: [Mlt-devel] 10-bit color?

, Brian Matherly wrote: >  > > Am I (at all) on the right track here?: > > > > > > Yes! > > > > > > This code seems to say the avformat producer supports rgba, rgb24, and > > > yuv422p? > > > https://github.com/mltframework/mlt

Re: [Mlt-devel] 10-bit color?

> > Am I (at all) on the right track here?: > > > > Yes! > > > > This code seems to say the avformat producer supports rgba, rgb24, and > > yuv422p? > > https://github.com/mltframework/mlt/blob/master/src/modules/avformat/producer_avformat.c#L614-L630 > > > > This is a better place to look:

Re: [Mlt-devel] 10-bit color?

On Monday, November 9, 2020, 03:24:43 AM CST, amin...@mailbox.org wrote: On Sat, Nov 07, 2020 at 03:13:49PM +, Brian Matherly wrote: >  > Thanks. > >  > > Is there an easy way to list (or find) which formats are supported -- > > and thus don't require c

Re: [Mlt-devel] R: Re: How to view simultaneously unprocessed frames and processed ones in two X windows?

The filter will not process the audio until you call mlt_frame_get_audio()https://github.com/mltframework/mlt/blob/master/src/framework/mlt_frame.h#L127 Why not listen to the "consumer-frame-render" event from the consumer and request the level of the frame after all the filters have been

Re: [Mlt-devel] 10-bit color?

> Thanks. >  > Is there an easy way to list (or find) which formats are supported -- > and thus don't require conversions -- for inputs and outputs of > filters/transitions? >  > Tom I think the only way would be to audit the source code and see what mlt image format the service requests.

Re: [Mlt-devel] 10-bit color?

>> That is correct, but beware of automatically-added normalization filters >> that are added in src/modules/core/loader.ini for things such as scaling >> and padding, etc. > ffmpeg has options like -auto_conversion_filters [0] and "-pix_fmt +" [1] to > explicitly disallow accidental

Re: [Mlt-devel] Keep producer aspect ratios

This happens because you have not specified a profile - so MLT makes up a profile based on your first producer. https://www.mltframework.org/docs/profiles/ An easy way to learn about profiles is to create a project with a tool like Kdenlive or Shotcut and then inspect the output. On

Re: [Mlt-devel] 10-bit color?

for 10-bit color support in the next 6-12 months that sort of stops things in their tracks for me and I'll need to figure out something else. Tom > El 28 jul 2020, a las 23:20, Brian Matherly > escribió: > > It would be helpful if you could provide more detail about what you are

Re: [Mlt-devel] 10-bit color?

It would be helpful if you could provide more detail about what you are trying to accomplish. What do you mean by "modules" and which ones do you need to use? ~Brian On Tuesday, July 28, 2020, 08:11:52 AM CDT, amin...@gmail.com wrote: Back when it seemed like a no-brainer I remember

Re: [Mlt-devel] RAM guidelines?

> On Wednesday, September 11, 2019, 12:35:03 AM CDT, Kingsley G. Morse Jr. > wrote: >  >  > Can you suggest a reasonable amount of RAM for a > 64 bit computer, so it can edit videos with melt's > framework and kdenlive? >  > At the moment, I tend to > 1.) render to 1920x1080 .webm > 2.) use

Re: [Mlt-devel] What are L R P loudness results?

On 8/3/2018 9:12 PM, Carl Karsten wrote: analysis pass stored these values: What are the 3 parameters? $ grep results Welcome_to_CircuitPython.mlt L: -26.787672R: 21.030387P 0.889130 L: -26.012146R: 20.896616P 0.865967 L: -27.243035R: 19.009469P

Re: [Mlt-devel] Retrieving the "real" playtime of a producer

On 6/5/2018 8:17 PM, alcinos wrote: Hello, I'm currently facing the following problem. I have a producer that is going to be encapsulated into a timewarp producer to adjust speed, and I would like to know beforehand what will be the duration of the timewarped producer. To give a concrete

Re: [Mlt-devel] Detecting alpha in avformat producer

Sure the 3rd option is much simpler, and since MLT doesn't currently support > 8bit buffers it won't make much difference in the result. A simple patch is in my github's fork: https://github.com/j-b-m/mlt/commit/d8c723130e34da7680b50b47bc31a927ef6414cd It supports both

Re: [Mlt-devel] webm encoding reports 1000fps

Following Kdenlive's bug report: https://bugs.kde.org/show_bug.cgi?id=392294 I noticed that encoding to webm with the avformat consumer produces files reporting an incorrect fps (1000fps). Some googling suggested to enforce the fps on the stream, and the following patch produces files that

Re: [Mlt-devel] Detecting alpha in avformat producer

On 3/26/2018 1:49 AM, Jean-Baptiste Mardelle wrote: On 23.03.2018 18:42, Dan Dennedy wrote: Do not forget to check libavutil version when adding more pixfmts. One more question since I am not very familiar with the avformat / alpha pipeline. The AV_PIX_FMT_YUVA444P10LE uses 10bits for each

Re: [Mlt-devel] Detecting alpha in avformat producer

On 3/23/2018 2:47 AM, Jean-Baptiste Mardelle wrote: Hi all, In order to optimize performance, in the qtblend transition (in the qt module), I try to detect if the top frame in the transition has transparency, and if it doesn't, instead of performing the transition I just return the top

Re: [Mlt-devel] Having issues with dynamictext geometry and size

Hello. I have been trying to resize the dynamic text filter with no luck. I have tried many iterations of the following command and they all fail to resize the text.. the text just stays massive. I have also tried the size argument and was unsuccessful as well. Any pointers? I suspect I am

Re: [Mlt-devel] (gdb) print self->size ... 33554432 (Was: How to debug a "[mlt_pool] out of memory"?)

If I understand correctly, I did as you asked. $ gdb (gdb) file kdenlive (gdb) b mlt_pool.c:142 (gdb) r Thread 28 "RenderThread" hit Breakpoint 1, pool_fetch (self=0x809c8920) at mlt_pool.c:142 (gdb) print self->size $1 = 33554432 I expect you're in a

Re: [Mlt-devel] How to debug a "[mlt_pool] out of memory"?

I elicit a [mlt_pool] out of memory by using the mouse to move kdenlive's time line pointer. There are two ways this error can happen: https://github.com/mltframework/mlt/blob/master/src/framework/mlt_pool.c#L140 Either: * the pool is initialized with a size of 0 or * mlt_alloc() has

Re: [Mlt-devel] A TypeWriter effect for kdenlive and mlt using the TypeWriter library I developed for this purpose

On 9/6/2017 9:13 AM, Rafal Lalik wrote: I would also add one other suggestion for your consideration: If you don't necessarily need all the other features of the Kdenlive Titler in conjunction with your typewritter effect, you might consider making the typewriter its own stand-alone service in

Re: [Mlt-devel] A TypeWriter effect for kdenlive and mlt using the TypeWriter library I developed for this purpose

On 9/5/2017 12:23 PM, Rafal Lalik wrote: Please tell me your though about it and how would you like to proceed. I can then eventually merge the code of derived classes in kdenlive into basic classes and present as a pull request. The code for mlt actually is already in its final state, could be

Re: [Mlt-devel] Deinterlace / Frame doubling

Hi David, On 4/7/2017 3:18 PM, David Noble wrote: > Hi > > I've got a couple 1080i25 sources[1], [2] that I'm trying to output to > a 1080p50 avformat consumer, and I seem to be struggling! > > It seems that there's some interesting quirks in how mlt behaves > contra how the yadif deinterlacer

Re: [Mlt-devel] How to get a true constant video bitrate (not only muxrate) in an UDP output with Melt

Hello Dan, Brian. Thank you for your answers. I've been struggling with this issue for a while and I don't manage to get an almost constant video bitrate in the output. It seems I should use the --nal-hrd cbr option to "fill the mux" as explained in post:

Re: [Mlt-devel] How to get a true constant video bitrate (not only muxrate) in an UDP output with Melt

I need to get a true constant video bitrate in an UDP output address. By using cbrts consumer I am getting a constant muxrate in the UDP output, but not a constant video bitrate. I have noticed that varying the gop size has an effect in the shape of the output video bitrate curve but still I

Re: [Mlt-devel] Profile change of a created object (producer, consumer...)

On 3/13/2017 9:17 AM, alcinos wrote: > Thank you for your answer. > So if I understand correctly the logic of the code you've linked, if I > create my objects (filter, consumers, producers) with a pointer to the > same Profile object, then modifing properties of this profile object > (fps, …)

Re: [Mlt-devel] [RFC] 10 bits

On 2/11/2017 9:20 AM, Maksym Veremeyenko wrote: > any objection against introducing *mlt_image_yuv422p10* ? > I am in full support of 422 and planar formats. Just wondering about the bit packing. What would be the corresponding AV format? Would it be 16 bpp with 6 bits unused? BE or LE? If

Re: [Mlt-devel] [mltframework/mlt] 19b2fb: Update internal libebur128 to version 1.1.0

On 2/1/2017 8:33 AM, Patrick Matthäi wrote: > Am 01.02.2017 um 15:07 schrieb Brian Matherly: >> I can provide an update on this. >> >> With the 1.2.0 release of libebur128, the upstream library should be >> compatible with MLT. The only thing that would be needed

Re: [Mlt-devel] [mltframework/mlt] 19b2fb: Update internal libebur128 to version 1.1.0

r policy. This is a clear fork of >>> libebur128. Let them figure out what they want to do about it. Debian >>> can simply disable that module if they feel the need. >>> >>> >>> On Fri, Jul 8, 2016, 7:06 PM Brian Matherly <c...@brianmatherly.com >

Re: [Mlt-devel] [RFC] 10 bits

. The global thread pool would be timely for this. ~Brian From: Dan Dennedy <d...@dennedy.org> To: Brian Matherly <c...@brianmatherly.com>; Maksym Veremeyenko <ve...@m1stereo.tv>; mlt-devel <mlt-devel@lists.sourceforge.net> Sent: Sunday, January 29, 2017 3:18 PM

Re: [Mlt-devel] [RFC] 10 bits

> Hi, > > i am currently thinking about capturing and playback 10-bit yuv, but > have no idea how start handling of it. > > ffmpeg has no format for packed 16-bit Y/Cr/Cb samples - only planar. > v210 is also good, but not used as registered in MLT. > > have you any ideas? > > -- > Maksym

Re: [Mlt-devel] RFC mlt_slices global shared pool

I've not used the slices module nor studied it deeply. So here are some random comments for your consideration. * Who would be responsible for *first* initializing the global pool? * Whoever calls it first "wins" by being able to decide the number of threads. Maybe the number of threads should

Re: [Mlt-devel] Output video/audio streams pid set with Melt

I'm not sure about setting specific values. But would mpegts_start_pid work for you? https://mltframework.org/plugins/ConsumerAvformat/#mpegtsstartpid ~Brian From: David Alonso Grande To: mlt-devel@lists.sourceforge.net Sent: Thursday, January 12, 2017 8:49 AM

Re: [Mlt-devel] Set service_name and service_provider metadata

Set "meta.attr.service_provider.markup" and "meta.attr.service_name.markup" attributes on the avformat consumer. Example:# melt input.mp4 -consumer avformat:output.ts meta.attr.service_provider.markup=foo meta.attr.service_name.markup=bar vcodec=libx264 f=mpegts muxrate=2000 Cheers, ~Brian

Re: [Mlt-devel] Avoiding implicit conversions when fetching image/audio from frame

Depending on the producer, you might be able to query the image metadata and determine the native format. For example, the avformat_producer will often set the pix_fmt. Try to query "meta.media.0.codec.pix_fmt" on a frame from the avformat producer widget. Perhaps you could query the pix_fmt on

Re: [Mlt-devel] Compositing transition question

Hi JB, I have an observation about this line:https://github.com/mltframework/mlt/blob/master/src/modules/qt/transition_qtblend.cpp#L58 In QT, the image origin is in the upper left:http://doc.qt.io/qt-5/coordsys.htmlIn MLT, the image origin is in the bottom left. So I wonder if the

Re: [Mlt-devel] qt/configure

JB, I converted the common conversion functions to use QImage::Format_RGBA when available:https://github.com/mltframework/mlt/commit/c9e5c6acd31cab2ed5155fe884e949a090bb931bThis should also take care of the Qt version for you. Please try it and make sure I didn't cause a regression. Regards,

Re: [Mlt-devel] qt/configure

I think it would make sense to change the order: Qt5 first, then Qt4. I do not think a "--force" option is necessary. User can manually specify Qt using qt_libdir. ~Brian From: Jean-Baptiste Mardelle To: mlt-devel@lists.sourceforge.net Sent: Tuesday, July 19, 2016

Re: [Mlt-devel] Optimizing Qt functions

> Oh, right. I used it in my qtblend transition - than I guess I will enable > it only on Qt5. I would prefer to see copy_qimage_to_mlt_rgba() modified to use it with a conditional to check QT version at compile time. > I can confirm that you can draw text directly on the QImage >

Re: [Mlt-devel] Optimizing Qt functions

I think this would be a good optimization. QImage::Format_RGBA is not available in Qt 4.8. So we would need some pre-processor conditionals to use either the previous way or the new way depending on version. Are you sure that line order is the same between Qt and MLT image formats? For some

Re: [Mlt-devel] Compositing transition question

JB, I think this optimization could be made in frei0r.cairoblend. Could you compare the performance of frei0r.cairoblend with transition_qtblend when the top frame has transparency? Seems like the transition_qtblend would be worth keeping regardless of whether its performance is better. ~Brian

Re: [Mlt-devel] [mltframework/mlt] 19b2fb: Update internal libebur128 to version 1.1.0

? Then, would the policy no longer apply? After 6 months I am tired of waiting for libebur128 to accept (or reject) the pull requests. ~Brian From: Patrick Matthäi <pmatth...@debian.org> To: Brian Matherly <c...@brianmatherly.com>; "mlt-devel@lists.sourceforge

Re: [Mlt-devel] [mltframework/mlt] 19b2fb: Update internal libebur128 to version 1.1.0

tframework/mlt/commit/19b2fb8bc13ff561367d4bf6927ba7809f6b23dd >  Author: Brian Matherly <c...@brianmatherly.com> >  Date:  2016-03-02 (Wed, 02 Mar 2016) > >  Changed paths: >    M src/modules/plus/Makefile >    M src/modules/plus/ebur128/ebur128.c >    M src/modules/plus/ebur128/ebur128.h &g

Re: [Mlt-devel] Optimizing `melt` in a CPU-intensive environment

ing to H.264, I only need to set "threads=4" and I can pretty much saturate my CPU. Basically, one core ends up doing all the decoding and MLT processing and the rest of the cores get used up for encoding. ~Brian From: jeffrey k eliasen <j...@jke.net> To: Brian Matherly <

Re: [Mlt-devel] unable to build on new ubuntu 16.04

Have you checked that you have dev libraries for gcc 4.8 installed and not some other version?http://packages.ubuntu.com/xenial/libgcc-4.8-dev I'm not sure which GCC is the default in Xenial, but it supports many:http://packages.ubuntu.com/search?keywords=libgcc-=names=xenial=all Looks like

Re: [Mlt-devel] [mltframework/mlt] 7e27db: Add release notes for v6.2.0

> Building against external libebur is still on the todo list if I see it > correctly? Yes. Still waiting for them to process my pull requests. ~Brian -- Find and fix application performance issues faster with

Re: [Mlt-devel] New motion tracker filter

-Baptiste Mardelle <j...@kdenlive.org> To: mlt-devel@lists.sourceforge.net Sent: Saturday, April 16, 2016 12:03 PM Subject: Re: [Mlt-devel] New motion tracker filter On Saturday, April 16, 2016 12:03:24 AM CEST, Brian Matherly wrote: Hi Brian, Thanks for the feedback. > Could you look

Re: [Mlt-devel] New motion tracker filter

Cool filter. Could you look at how we do 2-pass analyze/apply filters in vid.stab and loudness and follow that convention?https://github.com/mltframework/mlt/blob/master/src/modules/vid.stab/filter_vidstab.ymlhttps://github.com/mltframework/mlt/blob/master/src/modules/plus/filter_loudness.ymlIf

Re: [Mlt-devel] melt and qmelt binaries from Shotcut can't find plugins

You need to use the melt wrapper script in the Shotcut.app directory which sets up the proper library paths: $ xvfb-run -a /app/Shotcut/Shotcut.app/melt Without the wrapper script, the executable doesn't know where to look for the libraries. ~BM From: Gonzalo García Berrotarán

Re: [Mlt-devel] Bug#816340: lack of rtaudio blocks Movit support in Kdenlive

In the next day or two I will make a commit to catch our internal ebur128 to the latest version. I am willing to administer a contribution patch that provides an option to use internal or system ebur128. But the patch must use a configure switch to enable system ebur128. The reason is that in

Re: [Mlt-devel] Kdenlive & Render Command

The "kdenlive_render" command from KDENLIVE is already a command line application:https://quickgit.kde.org/?p=kdenlive.git=tree=b78350e3e97a7fd39ec8b866a3d8e3c2b3ebe6bb=991187b276cecb98d428b9d96255c66db21052bd=renderer They call it by passing in an MLT XML file (src) along with some other

Re: [Mlt-devel] relative paths in .mlt

I have a theory that your colons might be confusing the loader. The loader supports a feature were the service can be specified as part of the argument with a colon delimiter: https://github.com/mltframework/mlt/blob/master/src/modules/core/producer_loader.c#L45 Perhaps your colon is getting

Re: [Mlt-devel] Equivalent of ffmpeg's --filter-complex in melt?

they work. It can take a little trial and error to get used to the syntax. So dig in and have fun! ~Brian On 11/30/15, Brian Matherly <c...@brianmatherly.com> wrote: > I think you want to look into MLT transitions. > ~Brian Thanks, Brian. I checked http://www.mltframework.org/

Re: [Mlt-devel] Equivalent of ffmpeg's --filter-complex in melt?

I think you want to look into MLT transitions. ~Brian From: Zenny To: mlt-devel@lists.sourceforge.net Sent: Wednesday, November 25, 2015 2:04 AM Subject: [Mlt-devel] Equivalent of ffmpeg's --filter-complex in melt? Hi, Is there an equivalent of ffmpeg's

Re: [Mlt-devel] Dynamictext recorded time

"meta.attr.1.stream.creation_time.markup"Comes from the metadata dictionary connected to the AVStream structure associated with each stream (audio, video, etc). May or may not be present for any given stream. "meta.attr.creation_time.markup" Comes from the metadata dictionary connected to the

Re: [Mlt-devel] Fwd: Bug#803841: mlt: FTBFS with FFmpeg 2.9

Fixed in git:https://github.com/mltframework/mlt/commit/97c2dd0de4f578ad40d547eddf78fcb1e4a008a4 From: Patrick Matthäi To: MLT Mailinglist Sent: Wednesday, November 4, 2015 11:40 AM Subject: [Mlt-devel] Fwd: Bug#803841: mlt:

Re: [Mlt-devel] How could I assembly sound files ?

You can use the melt program. But why not use Audacity or some other audio editor? From: Axel Rousseau To: mlt-devel@lists.sourceforge.net Sent: Thursday, October 8, 2015 10:15 AM Subject: [Mlt-devel] How could I assembly sound files ? Hi,I would

Re: [Mlt-devel] [PATCH] Implement text rotation in pango producer

You make a good point. The same result can be achieved by applying the affine transition. Instead of putting the rotation responsibility on the pango producer, why not allow the watermark filter to use the affine transition? From: Dan Dennedy d...@dennedy.org To: Brian Matherly c

Re: [Mlt-devel] [PATCH] Implement text rotation in pango producer

Personally, I would like to see this implemented in the qtext producer also since we try to keep qtext and pango producers in sync. Also, I would suggest angle or rotation instead of rot_angle. ~BM From: Maksym Veremeyenko ve...@m1stereo.tv To: mlt-devel@lists.sourceforge.net Cc: Dan

Re: [Mlt-devel] Repeated frames with melt

http://www.mltframework.org/bin/view/MLT/Questions#Does_MLT_take_advantage_of_multi Instead of real_time=0, try real_time=-1. On your 8-core machine, you might try real_time=-8. The negative number indicates that frame dropping is disabled. The real_time property changes the MLT consumer

Re: [Mlt-devel] Capture movie in chunks/segments using melt

I'm not sure the best way for Mac. It does come bundled with Shotcut. So maybe that would work for you. Download Shotcut, and then just use the bundled mlt binary:http://www.shotcut.org/bin/view/Shotcut/Download ~Brian From: Nisar Ahmed nisar@gmail.com To: Brian Matherly c

Re: [Mlt-devel] Capture movie in chunks/segments using melt

You need to tell the dynamic text filter what text you want to display: melt -verbose -profile dv_pal /Volumes/XSAN/test000.mov -attach dynamictext:#timecode# -consumer decklink ~BM From: Nisar Ahmed nisar@gmail.com To: Dan Dennedy d...@dennedy.org Cc: mlt-devel

Re: [Mlt-devel] kdenlive crashes so does mlt

I don't see any evidence in your output that suggests MLT is crashing. The [mpegts...] messages are from ffmpeg and are beneign. The rest of the messages are from KDNELIVE. ~Brian From: Zenny garbytr...@gmail.com To: mlt-devel@lists.sourceforge.net Sent: Saturday, April 11, 2015 7:19

Re: [Mlt-devel] [mltframework/mlt] 15f397: Improve A/V sync when starting/stopping/refreshing...

  Commit: 15f397deea19ded69bd068d6b7eb9be9d7b27806       https://github.com/mltframework/mlt/commit/15f397deea19ded69bd068d6b7eb9be9d7b27806   Author: Brian Matherly c...@brianmatherly.com   Date:  2015-02-25 (Wed, 25 Feb 2015)   Changed paths:     M src/modules/sdl/consumer_sdl_audio.c   Log

Re: [Mlt-devel] [mltframework/mlt] 15f397: Improve A/V sync when starting/stopping/refreshing...

it - and let me know if you run into anything unexpected. ~Brian From: Dan Dennedy d...@dennedy.org To: Brian Matherly c...@brianmatherly.com Cc: mlt-devel@lists.sourceforge.net mlt-devel@lists.sourceforge.net Sent: Wednesday, February 25, 2015 3:41 PM Subject: Re: [Mlt-devel

Re: [Mlt-devel] build-melt.sh errors

Looks like you are trying to run the script in a directory that already has some really old sources. We have to switch git repos from time to time for various reasons. Clean out the old source folders: # rm -Rf *# wget http://github.com/mltframework/mlt-scripts/raw/master/build/build-melt.sh #

Re: [Mlt-devel] motion_est filter behaves differently in 0.9.2

The motion_est module is GPL. You have to enable GPL modules when you configure. Try:#./configure --enable-gpl You can run#./configure --helpto see all the build options. After the build run# melt -query filtersto see the list of filters that were built. If motion_est is not in the list, then it

Re: [Mlt-devel] Can I use any transitions besides luma for a pixbuf slideshow?

I would do it like this: producer1producer2producer3producer4playlist1  producer1  blank  producer3  blank playlist2   blank   producer2  blank  producer4tractor  playlist1  playlist2  transition1  transition2  transition3 The key will be setting the length of the blank entries and the in/out

Re: [Mlt-devel] Can I use any transitions besides luma for a pixbuf slideshow?

Hi Jeremy, Looking at the list of filters it looks like luma is the only one that will take the current and next frame as input.  Is there any way to accomplish the same thing with other transitions, like composite or affine (maybe using the transition filter somehow?). Thanks!Jeremy Can you

Re: [Mlt-devel] Raspberry pi support

Hello guys. First of all merry Christmas :-) Then Does Someone knows if raspbian (debian compiler forma raspberry pi) has Support for mlt framework? Does it Support hardware accelerated decode (codecs are proprietary) forma mpeg2 andò h264? Is possibile To compile (make switches)

Re: [Mlt-devel] [mltframework/mlt] 629db0: Second Try: Fix filters with encapsulated transiti...

...   Branch: refs/heads/master   Home:  https://github.com/mltframework/mlt   Commit: 629db075398167cbab6106cd73dd228b22018f25       https://github.com/mltframework/mlt/commit/629db075398167cbab6106cd73dd228b22018f25   Author: Brian Matherly pez4br...@yahoo.com   Date:  2014-12-05 (Fri, 05 Dec 2014

Re: [Mlt-devel] adjust volume for certain part of a clip

Thanks, Brian. A minor nit: in yml, instead of default: unset you should simply omit that line unless there is actually some special value unset for that property as in rgblut. I am noticing a trend towards that unset when the intention was that no default means exactly that. Great

Re: [Mlt-devel] adjust volume for certain part of a clip

Dan, The level parameter is relatively new. How would you feel about breaking backwards compatibility and converting it to dB? I'm willing to do the work. I think that will affect the current Flowblade release. Let's see what Janne says. Otherwise, I do not have a problem with the

Re: [Mlt-devel] adjust volume for certain part of a clip

Pascal, Downloaded the latest version of shotcut and the included melt works just as expected ! one more question, I'm animating the audio level with this kind if string : -filter volume level=0=0;100=1;150=1;300=0 I wondering if this is the good way to do it and also what are the units

Re: [Mlt-devel] adjust volume for certain part of a clip

Pascal, You are absolutely correct, I was wondering why the the sound seems to go up much more rapidely than I expect. is it possible to indicate Db instead of just a factor ? It is not currently possible. But in my opinion, it would make sense to change the behavior of the level parameter

Re: [Mlt-devel] Filters in shotcut

Brian is working on a filter manager; so people not interested in the NDVI filter do not need to mentally skip over it every time they access the filter menu. And I am currently working on the ability to let a filter provide a QML UI that overlays the video area. The filter manager is

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