clever FFmpeg-GUI, small FFmpeg UI, fully portable, no installation.

[videoAI]

@ProWo
v3.4.6.11 feedback

Not sure if this was mentioned earlier .. but
'Analisys' should be 'Analysis' .. and
'unsuccessfull' should be 'unsuccessful' .. one L

Technically, the analysis completed [was successful], but detected no scene changes,
so, may be, change the box title to just 'Analysis' or 'Detection Unsuccessful'.


[Attachment 89338 - Click to enlarge]

[Findu]

v3.4.6.012 feedback

Fixed:
No downmix wrong frame size
“Change length and pitch” new frame size
Batch scan reappear after abbort
Scanning after abbort
Batch task now without wrong scan result window
Success message for empty grid muxing

Add:
Chapter wrong input check and automatic correction - works well. Thank you.
And good to have a progress bar!

Minor things:
Chapter, Manual creation, has two spaces between necessary & and.
The "Delete last add" button remain when you delete all chapters in the list.

"At scene changes" produce wrong chapters. Some START= values are greater than the video duration.
That is the reason why you can not mux such Created_chapters.txt files.


EDIT:

Example with duration of 35 minutes
Correct last chapters each minute:
[CHAPTER]
TIMEBASE=1/1000
START=1980000
END=2039999
title=Chapter 33

[CHAPTER]
TIMEBASE=1/1000
START=2040000
END=2071652
title=Chapter 34

Created with "At scene changes", all created data
[CHAPTER]
TIMEBASE=1/1000
START=000 <-- Okay
END=32938239
title=Start

[CHAPTER]
TIMEBASE=1/1000
START=32938240 <-- Wrong, too large number
END=32970271
title=Chapter 1

[CHAPTER]
TIMEBASE=1/1000
START=32970272 <-- Wrong, too large number
END=2071652
title=Chapter 2

Some END values are also incorrect. They must be divided by 16.

[ProWo]

"At scene changes" produce wrong chapters. Some START= values are greater than the video duration.
That is the reason why you can not mux such Created_chapters.txt files.

I can't replicate that here.
The analysis reads the timestamps (pts); your video probably has invalid timestamps.
To test this, load the video, click on lossless changes, select fix time stamps, and repeat the test with the new video.

[Findu]

Even higher values after fixed time stamps

;FFMETADATA1

[CHAPTER]
TIMEBASE=1/1000
START=000
END=49411351
title=Start

[CHAPTER]
TIMEBASE=1/1000
START=49411352
END=49459399
title=Chapter 1

[CHAPTER]
TIMEBASE=1/1000
START=49459400
END=2071652
title=Chapter 2

[ProWo]

Even higher values after fixed time stamps

Found the bug, is fixed now.
Update, please.

[Findu]

I just record a clip with W11 x64 snipping tool and get the same result like for the previous videos.

The number fix is working and the chapters get muxed.
But only the last two chapters get written/stored in the chapters text file.

[Findu]

Strange value in Crop -> Top, use crop detection. The test file has been cut with the app.


[Attachment 89351 - Click to enlarge]

The entire text: "488 Last message repeated 1 times"

The preview cannot be played until the characters are deleted.
Of course video encoding doesn't work either.

input.mp4

[Findu]

Selecting “At fixed intervals,” 600 seconds is the default.
However, you must first change this value before the “Create file” button appears.
Even if the video is longer than 600 seconds and a 600-second chapter fits into it.
Currently, the button is also hidden until the chapter fits. And that's a good thing.

Can you also change "Any 600 seconds" to "Every 600 seconds".

[ProWo]

Strange value in Crop -> Top, use crop detection. The test file has been cut with the app.
The entire text: "488 Last message repeated 1 times"

Thx for the hint and the test file, never seen this, but I'll fix it.

[ProWo]

Selecting “At fixed intervals,” 600 seconds is the default.
However, you must first change this value before the “Create file” button appears.
Even if the video is longer than 600 seconds and a 600-second chapter fits into it.

I can't reproduce that here. Tested with a cutted file with 00:10:00.041 duration (600.041 seconds).
2 chapters are created, the create file button is displayed. All as aspected.

Can you also change "Any 600 seconds" to "Every 600 seconds".

Will be done.

[ProWo]

@ Admins
Delete this, please

[Findu]

Tested again with other files. It works as expected. Sorry. My mistake.

How about adding a button to “Extract” embedded chapter streams in the “Action” field at the chapters page?

EDIT:
The Extract button could extract the stream and load it immediately as an external chapter in your editor!

EDIT2
Might be better to name the button "Export".

[ProWo]

How about adding a button to “Extract” embedded chapter streams in the “Action” field at the chapters page?

This would only make sense if you wanted to edit the chapters, which is not necessary in most cases.
And even if it were, the existing extraction option is sufficient.

[Findu]

Yes, you're right.

Could you write “Extract streams” on the main page with a capital E only? Then it will be consistent.

You have PM.

[Findu]

@ ProWo

v3.4.6.014 feedback

Crop:
I like the flashing "file scan in progress" text line.
How about adding an Abort button while scanning, as a 135 minute movie need 4:10 on two cores.
Good idea to change the Help text to "To finally integrate the activated chapters".
But I would swap "Integration with muxind" and "Video duration", as you always have source infos at the top.

Video encoding page:
The frame text "H accelerated decoding" should be "HW accelerated decoding" or "HWA decoding".
Could you move the entire encoder settings frame up a little so that the HWA frame can grow in height?
And can you also add (pixel) to the Crop frame text.

[ProWo]

How about adding an Abort button while scanning, as a 135 minute movie need 4:10 on two cores.
But I would swap "Integration with muxind" and "Video duration", as you always have source infos at the top.

To both: no

Video encoding page:
The frame text "H accelerated decoding" should be "HW accelerated decoding" or "HWA decoding".
Could you move the entire encoder settings frame up a little so that the HWA frame can grow in height?

Will be done.

And can you also add (pixel) to the Crop frame text.

Where?

[Findu]

You won't see the frame often, but when you do, it will be consistent.


[Attachment 89377 - Click to enlarge]

[lomero]

sorry @ProWo if i ask such a stupid thing but i can't find a way in Multiplex to choose the output folder ...
click on Output nothing to do. and the file is saved into clever folder. how change output folder ??


[Attachment 89383 - Click to enlarge]

[Findu]

@lomero

On the Multiplex page, you can use the Target file name button to change the output folder and file name once. So this change does not apply to further multiplexing.

You can switch between output to target and source folder using the Toggle destination button on the Main page. This setting will then apply permanently.

[Findu]

@ Prowo

Would it make sense to allow drag and drop of single audio files directly to the Audio encoding page?
So there is no need to return to the Main page, drop the file and go back to the Audio encoding page.
---

When you Abort a scan on the Scan for errors page, "Stay open" appears.
But you don't need that here.
---

Automatic chapters created with "At scene changes" still does'nt work as I would expect it.

If you review the 13 chapters from the 15-minute sampel from sam12345's post
https://forum.videohelp.com/threads/419243-Custom-Command-in-Clever-FFmpeg-GUI#post2784693
It has many useless chapters lasting ~5 seconds at
6:46
6:50
6:54
6:59
7:02
7:06

Or the 30 minute sampel with 5 chapters from post
https://forum.videohelp.com/threads/419243-Custom-Command-in-Clever-FFmpeg-GUI#post2784912
It has useless chapters lasting 20 seconds at
5:35
6:10
6:32

But I don't know of a better solution either.
---

How about changing the name "Target file name" button on the Multiplex page to "Target folder/file name"

[lomero]

@lomero

On the Multiplex page, you can use the Target file name button to change the output folder and file name once. So this change does not apply to further multiplexing.

You can switch between output to target and source folder using the Toggle destination button on the Main page. This setting will then apply permanently.

ok, thanks

[ProWo]

----------------------------------------------------------------------------------
October 26, 2025 release version 3.4.7.
----------------------------------------------------------------------------------

New Features, many improvements, changes and fixes.

----------------------------------------------------------------------------------

Special thanks to Findu for useful tips and lots of suggestions.
Thanks to VideoAI for the creation of the new Readme.md.

[ProWo]

Would it make sense to allow drag and drop of single audio files directly to the Audio encoding page?

Not really, because after encoding you are back into main page, ready to drop a new file.

When you Abort a scan on the Scan for errors page, "Stay open" appears.
But you don't need that here.

Fixed now.

Automatic chapters created with "At scene changes" still does'nt work as I would expect it.

I've refined it, is working on I-frames only now and I've added an option to change the treshold.

How about changing the name "Target file name" button on the Multiplex page to "Target folder/file name"

Too long for the button.

[Findu]

@ Prowo

v3.4.7 feedback

Thank you very much for your numerous, sometimes complex and time-consuming changes!

The new main page in particular contributes greatly to a better workflow.
And I like the new Lock feature at the crop page. Good idea.
---

>> Automatic chapters created with "At scene changes" still does'nt work as I would expect it.
> I've refined it, is working on I-frames only now and I've added an option to change the treshold.

Great. Treshold works well. Now you have more control.
But you still get chapters within a few seconds. A value in seconds for the minimum permitted time between two chapters would prevent this behavior.

It might be also helpful to display the number of automatically generated chapters so that their correctness can be directly assessed.

[sam12345]

They should look like this after doing at "At scene changes"
[Attachment 89392 - Click to enlarge]

[videoAI]

Another milestone, congrats

October 26, 2025 release version 3.4.7.

[Findu]

@ ProWo

At scene changes, tests:

When I use treshold 0,35, I get 20 chapters for the 15 minute F1 sample, 5 of them between minute 12:53 and 14:34
0,4 generate 9 chapters, 5 of them between minute 12:53 and 14:34
0,5 generate 8 chapters, 5 of them between minute 12:53 and 14:34
0,6 generate 6 chapters, 5 of them between minute 12:53 and 14:34
0,7 generate 4 chapters, 3 of them between minute 12:53 and 14:34

The situation is similar with 50 to 130-minute videos. There are always sections with many chapters within a few seconds and sections without chapters for 15 to 20 minutes, even though this is not the case in the video.
Here, we would need two additional values for an approximate minimum and maximum distance between two chapters.
---

The values and settings in Lossless Crop remain till restart of the app. Even a different source file will not reset them.
---

When you open Crop, you see the button "Ok, done" (without a cropped frame). Normally, you hide it till a crop has been found.
---

Pad width tooltip text "Only even values grater than the frame width produce a Pillarbox (black bars left & right)."
Pad height tooltip text "Only even values grater than the frame height produce a Letterbox (black bars at top & bottom)."
---

How about using "Frame rate (fps)" as the frame text?
The tooltip could be "Target video frame rate in frames per second (fps)"


[Attachment 89394 - Click to enlarge]

[sam12345]

The situation is similar with 50 to 130-minute videos. There are always sections with many chapters within a few seconds and sections without chapters for 15 to 20 minutes, even though this is not the case in the video.
Here, we would need two additional values for an approximate minimum and maximum distance between two chapters.

It works on Scene Detection. Wondering, if an third option can be added Chapters formed on video duration
[Attachment 89396 - Click to enlarge]

Try this batch > TXT below

[sam12345]

EDIT:

When I use treshold 0,35, I get 20 chapters for the 15 minute F1 sample, 5 of them between minute 12:53 and 14:34
0,4 generate 9 chapters, 5 of them between minute 12:53 and 14:34
0,5 generate 8 chapters, 5 of them between minute 12:53 and 14:34
0,6 generate 6 chapters, 5 of them between minute 12:53 and 14:34
0,7 generate 4 chapters, 3 of them between minute 12:53 and 14:34

You have done the above for the same "F1 Sample" again and again but it formed the chapters for each between 12:53 and 14.34 b'cause the chapters formation has been done on "Scene Detection" for the same video clip based on "PTS" or PTS_TIME".

Try the new batch based on video duration. Last chapter in casting end will not be formed. (TXT of batch(.bat) attched below.....

Just make the (.bat) file of the TXT Drag and Drop your video on that batch file. Chapters.txt will be formed. Finally you can mux it in multiplex by selecting "External File" under chapters section.

@ProWo > Kindly implement it "Based on video duration"
[Attachment 89406 - Click to enlarge]

[ProWo]

Try the new batch based on video duration. Last chapter in casting end will not be formed. (TXT of batch(.bat) attched below.....

It's just another way of creating chapters at fixed intervals.
This is already implemented.