Search found 9868 matches

by Sergey Tkachenko
Thu Jun 18, 2026 2:35 pm
Forum: Examples, Demos
Topic: [Info] Problems with FMX TSpeedButtons in Delphi 13.1
Replies: 0
Views: 2

[Info] Problems with FMX TSpeedButtons in Delphi 13.1

You may notice that buttons in some FireMonkey demo projects look unusual: in addition to images from a TImageList, a flag icon is displayed on top of them.

This is caused by a bug in Delphi 13.1. Normally, the predefined button icons should be hidden when an image from a TImageList is assigned to ...
by Sergey Tkachenko
Mon Jun 15, 2026 8:57 pm
Forum: RVMedia
Topic: RVCamera Error during longer RDP Session
Replies: 1
Views: 55

Re: RVCamera Error during longer RDP Session

After you assign a video device index, TRVCamera reads a list of camera properties only once. Later, it uses cached values.
So, I think this error may happen immediately after switching to another camera.

In the current version, RVMedia does detect changes in the list of available cameras. So, if ...
by Sergey Tkachenko
Mon Jun 08, 2026 7:18 pm
Forum: RVMedia
Topic: FFmpeg libraries for Windows
Replies: 5
Views: 302453

Re: FFmpeg libraries for Windows

The setup of RVMedia 12 includes FFmpeg 8.1.1 build with Whisper (Windows 64 bit), compatible with GNU LGPL license
RVMedia supports FFmpeg versions from 1.x to 8.x.
by Sergey Tkachenko
Sat Jun 06, 2026 12:27 pm
Forum: Announcements
Topic: RVMedia 12 - FFmpeg 8, speech to text (Whisper)
Replies: 4
Views: 305

RVMedia 12 demo projects

Demo projects

Demos\Recording\SpeechToText\

A new speech recognition demo has been added (in 3 versions: for VCL, for Lazarus, for FireMonkey).


speech-to-text.png


List of sample cameras

The list of public cameras used in many demo projects has been updated. Non-working cameras have ...
by Sergey Tkachenko
Sat Jun 06, 2026 12:25 pm
Forum: Announcements
Topic: RVMedia 12 - FFmpeg 8, speech to text (Whisper)
Replies: 4
Views: 305

Local (USB) cameras

Local (USB) cameras

This update significantly optimizes the decoding of frames received from local webcams. This applies to Windows and Linux, where RVMedia performs frame decoding itself. (On macOS, RVMedia uses the operating system's built-in decoding facilities.) As a result, CPU usage is ...
by Sergey Tkachenko
Sat Jun 06, 2026 12:25 pm
Forum: Announcements
Topic: RVMedia 12 - FFmpeg 8, speech to text (Whisper)
Replies: 4
Views: 305

Speech to text in RVMedia

Speech to text in RVMedia

Speech recognition is integrated into RVMedia in two places.

First, the TRVCamera component can perform speech recognition when it receives video with audio using FFmpeg (note that this requires FFmpeg 8 or later built with Whisper support). In this case, speech ...
by Sergey Tkachenko
Sat Jun 06, 2026 12:24 pm
Forum: Announcements
Topic: RVMedia 12 - FFmpeg 8, speech to text (Whisper)
Replies: 4
Views: 305

FFmpeg 8, speech to text (Whisper)

FFmpeg 8

This release adds support for FFmpeg 8.
RVMedia now supports FFmpeg versions 1 through 8.

The RVMedia installation now includes an FFmpeg 8.1.1 build for Windows 64-bit with Whisper support (see below). This build is compatible with the LGPL license.
Options that require the GPL license ...
by Sergey Tkachenko
Sat Jun 06, 2026 12:23 pm
Forum: Announcements
Topic: RVMedia 12 - FFmpeg 8, speech to text (Whisper)
Replies: 4
Views: 305

RVMedia 12 - FFmpeg 8, speech to text (Whisper)

RVMedia 12.0 has been released.

The trial version can be downloaded from https://www.trichview.com/download/

The full version: can be found in the protected section of the forum. This update is free for customers who ordered/renewed RVMedia in 2024-2026, and for customers with RVMedia ...
by Sergey Tkachenko
Fri Jun 05, 2026 8:42 pm
Forum: RVMedia
Topic: Playing video files using RVCamera
Replies: 7
Views: 16990

Re: Playing video files using RVCamera

The problems with the first video has been fixed in RVMedia 12.0.
by Sergey Tkachenko
Tue Jun 02, 2026 8:27 pm
Forum: Support
Topic: Duplicating Rows from Tables in Richview
Replies: 4
Views: 669

Re: Duplicating Rows from Tables in Richview

Tables have methods for copying rows (including cell properties and content).
Saving to TMemoryStream:
table.SaveRowsToStream(Stream, StartRow_Src, RowCount_Src);

Loading rows from this Stream:
Table.BeforeLoading(rvlfRVF);
Table.LoadFromStreamEx(Stream, StartRow_Dst, 0, False);
Table ...
by Sergey Tkachenko
Fri May 29, 2026 8:16 pm
Forum: Support
Topic: Duplicating Rows from Tables in Richview
Replies: 4
Views: 669

Re: Duplicating Rows from Tables in Richview

1. This table has a fixed height, 694 pixels (table.BestWidth = 694).
So, when you insert a wide item in the first column, the second column becomes very narrow, because the table width is not changed.
More natural resizing happens if you turn on automatic calculation of table width (table.BestWidth ...
by Sergey Tkachenko
Fri May 29, 2026 8:06 pm
Forum: Support
Topic: Issue with Text Formatting when Copying from RichEdit
Replies: 2
Views: 463

Re: Issue with Text Formatting when Copying from RichEdit

I confirm the problem.

TRichView saves Unicode bullet character in RTF as \bullet keyword.
But MS Word does not understand this keyword in list definition.
It's strange, maybe this is a glitch of the new versions of MS Word. I believe that it worked correctly when I checked it last time, but I ...
by Sergey Tkachenko
Fri May 29, 2026 7:53 pm
Forum: Support
Topic: RvFontCombobox behavior with multiple fonts
Replies: 5
Views: 3863

Re: RvFontCombobox behavior with multiple fonts

When you select a symbol font, RichViewActions auto-apply SYMBOL_CHARSET.
I agree, they should change SYMBOL_CHARSET to DEFAULT_CHARSET when applying a non-symbol font.
I will be implemented in the next update.