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

[chronis]

Hi,

1. Would you consider adding support for qaac codec?
2. Is there an option to change video frame rate (e.g. from 25 to 24) without encoding? I couldn't find one.
3. A drag-and-drop option for file specification would be very helpful.

Thanks

[ProWo]

Originally Posted by chronis

1. Would you consider adding support for qaac codec?

qaac codec is not included in ffmpeg, and because clever FFmpeg GUI is built on top of ffmpeg only, the use of qaac is not provided.

Originally Posted by chronis

2. Is there an option to change video frame rate (e.g. from 25 to 24) without encoding? I couldn't find one.

No.

Originally Posted by chronis

3. A drag-and-drop option for file specification would be very helpful.

What exactly do you mean by file specification?

[ProWo]

August 26, 2022 update to version 3.0.2.
Fixed: Exception handling, webm as container selection (multiplex).
Added: Chapters support (creating, editing, use extern chapters file), Source file check for warnings or errors, writing app info in outputs, select/deselect all streams in multiplexing, selection to move headers from mp4 and mov to the beginning for better streaming.
Changed: Scan type handling, LUT filter chain, Nero chapters entrys deleted for mp4+mov.
Improved: Hardcode subtitles handling, interlaced encoding from interlaced source, Video cutting.

[ProWo]

September 20, 2022 update to version 3.0.3.
Fixed: Video filter chain issue, extended range for IVTC detection issue.
Added: hdmv_pgs_sultitle mux to ts.
Changed: Missing scantype handling (progressive is assumed, but can be changed).
Improved: Chapters handling, Video cut, defective video handling, errors scan.

[ProWo]

October 25, 2022 update to version 3.0.4.
Changed: Video Fade Out, Audio delay handling.
Improved: Avisynth support, avs handling, interlaced encoding.

Originally Posted by ProWo

October 25, 2022 update to version 3.0.4.
Changed: Video Fade Out, Audio delay handling.
Improved: Avisynth support, avs handling, interlaced encoding.

Hi ProWo,

I had a little job to do with this today,

I wanted to convert a 7.1 TrueHD track to AAC 7.1, which this did, took a while, but that's ok.

However, the channel mapping changed considerably from original.

If you would like to know how it changed, please go here :-

https://forum.doom9.org/showthread.p...75#post1977775

Cheers

[tebasuna51]

I use MediaInfo channel names.

Here show 3 options for AAC Defined Layouts 7.1:

AAC_7_1: C L R Ls Rs Lw Rw LFE
AAC_7_1_B: C L R Ls Rs Lb Rb LFE
AAC_7_1_C: C L R Ls Rs Tfl Tfr LFE

The default one is the first and some aac encoders (Nero, ffmpeg, fhgaacenc) output always that channel layout using this WAV to AAC channel equivalence:
FL/FR -> Lw/Rw
FC/LFE = C/LFE
BL/BR -> Ls/Lr
SL/BR -> L/R
Using ffmpeg like decoder recover the correct layout sending a message:
[aac @ 00000215e4c73d80] Assuming an incorrectly encoded 7.1 channel layout instead of a spec-compliant 7.1(wide) layout, use -strict 1 to decode according to the specification instead.


If you want the standard 7.1 must use qaac or fdkaac than output the correct AAC_7_1_B: C L R Ls Rs Lb Rb LFE

[ProWo]

Originally Posted by TDS

Hi ProWo,

I had a little job to do with this today,

I wanted to convert a 7.1 TrueHD track to AAC 7.1, which this did, took a while, but that's ok.

However, the channel mapping changed considerably from original.

If you would like to know how it changed, please go here :-

https://forum.doom9.org/showthread.p...75#post1977775

Cheers

Hi TDS,
I checked this and just now encoded a TrueHD 7.1 audio stream to AAC 7.1 using clever FFmpeg-GUI.
Mediainfo shows the differences in channel layout you showed, but when I compare the files in Audacity, the channels are arranged exactly the same.
Maybe a problem of Mediainfo?
Compare yourself (see attached picture).
On the left the original TrueHD 7.1 file, on the right the converted AAC 7.1 file.

[tebasuna51]

Originally Posted by ProWo

...but when I compare the files in Audacity, the channels are arranged exactly the same.
Maybe a problem of Mediainfo?

Audacity can't decode itself AAC, it uses ffmpeg and maybe silent do:

"Assuming an incorrectly encoded 7.1 channel layout instead of a spec-compliant 7.1(wide)"

But MediaInfo now is correct, ffmpeg encode the standard 7.1 to a non-standard 7.1 channel layout.

Use qaac or fdkaac if you want the correct channel layout 7.1, without problems with 5.1.

Originally Posted by tebasuna51

Audacity can't decode itself AAC, it uses ffmpeg and maybe silent do:

"Assuming an incorrectly encoded 7.1 channel layout instead of a spec-compliant 7.1(wide)"

But MediaInfo now is correct, ffmpeg encode the standard 7.1 to a non-standard 7.1 channel layout.

Use qaac or fdkaac if you want the correct channel layout 7.1, without problems with 5.1.

So what does this really mean, does someone need to look into this a bit deeper ??

Fortunately for me, tho, I don't use 7.1 anyway, it was just a test, as a question was asked on another forum.

[tebasuna51]

Originally Posted by TDS

So what does this really mean, does someone need to look into this a bit deeper ??

The problem is how decode your player an AAC 7.1, strictly it must decode ffmpeg aac 7.1 like the second image in my post and can output a wrong channel map.

To avoid problems encode 7.1 with qaac (the recommended and free AAC encoder) or fdkaac, when the source is the image 1 the decoded output is the same.

Fortunately for me, tho, I don't use 7.1 anyway, it was just a test, as a question was asked on another forum.

The same for me, my AVR is configured like 5.1.2, and only use aac 5.1,

[ProWo]

Originally Posted by tebasuna51

Use qaac or fdkaac if you want the correct channel layout 7.1, without problems with 5.1.

I wanted to try that, but qaac does not recognize the truehd 7.1 file.

D:\Freeware\Audio\qaac\x64>qaac64.exe O:\rip\mainmovie\Audio_dolby-spheres-TrueHD_7.1_1_A_extracted.mka
qaac 2.76, CoreAudioToolbox 7.10.9.0
ERROR: Not available input file format

Can you show me the exact command line?

[tebasuna51]

You need ffmpeg like decoder:

"C:\Portable\0\ffmpeg.exe" -i "input.thd" -acodec pcm_s24le -f wav - | "C:\Portable\0\qaac.exe" -V 91 --ignorelength --adts --no-delay -o "output.aac" -

[ProWo]

Originally Posted by tebasuna51

You need ffmpeg like decoder:

"C:\Portable\0\ffmpeg.exe" -i "input.thd" -acodec pcm_s24le -f wav - | "C:\Portable\0\qaac.exe" -V 91 --ignorelength --adts --no-delay -o "output.aac" -

Thanks, this worked, but the new created file cannot be opened by foobar or audacity.

[tebasuna51]

You are rigth, seems problems of these soft's with ADTS AAC format, without problems in MP4 container:

"C:\Portable\0\ffmpeg.exe" -i "input.thd" -acodec pcm_s24le -f wav - | "C:\Portable\0\qaac.exe" -V 91 --ignorelength --no-delay -o "output.m4a" -

[ProWo]

Originally Posted by tebasuna51

You are rigth, seems problems of these soft's with ADTS AAC format, without problems in MP4 container

It's not the container, the adts switch is problematic.
Thanks anyway.
What software can display the effective AAC channel layout without the decoder changing it (like ffmpeg)?

[tebasuna51]

Originally Posted by ProWo

It's not the container, the adts switch is problematic.

Yes, because the adts header have a field for NumChannels not for a MaskChannel. The qaac and fdkaac put '0' in that header field and MediaInfo and many decoders read that like AAC_7_1_B: C L R Ls Rs Lb Rb LFE

If NumChannels is '8' is read like AAC_7_1: C L R Ls Rs Lw Rw LFE

I don't know where is documented that workaround.

What software can display the effective AAC channel layout without the decoder changing it (like ffmpeg)?

To display audio we need always decode it, to wav or equivalent uncompressed formats. Then your question is what decoders output wav files with waveformatextensible header and correct channelmask.

After decode you need a wav editor than read the channelmask correctly
The correct channelmask for a AAC_7_1: C L R Ls Rs Lw Rw LFE must be:
255 (FL FR FC LF BL BR FLC FRC)

I recommend qaac to Decode .aac or .m4a:

"qaac.exe" -D -b 24 -o "aac_.wav" "input"

Now you can display "aac_.wav" with Audacity, Wavosaur, GoldWave or Audition

[ProWo]

Thanks a lot for all this Information, tebasuna51.

[ProWo]

November 8, 2022
Added: Drag & Drop in the newest beta (v3.0.4.02).

[ProWo]

November11, 2022 beta version 3.0.4.03.
Improved: Drag & Drop in Select Source section, in Multiplex section and in Join section (You can drag & drop on the full frame).
Added: ffv1 encoding (level 1 and 3), ffv1 muxing.