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#21
Windows / This video contains B-frames, ...
Last post by Fozzie Bear - October 03, 2025, 02:22:34 PM
Hi I have the same issue as @gekht posted in the OSX forum.
I am using 2.8.1 on Windows 10 64 bit. The videos are 720p downloads from BBC iPlayer via get_iplayer app. (I am reducing the file size simply by selecting Bilinear in SWsResize Filter leaving all other settings alone. I find this reduces a 720P Mp4 from iPlayer to an Mp4 half the original size whilst retaining quality).

If I choose yes to the prompt it converts the file but the video is disjointed and the sound track out of sync. If I say no/cancel it converts the file and the video appears to be OK but the soundtrack is well out of sync.
I have tried downloading and installing the latest 2.8.2 nightly build and get the same error.

You asked @gekht for a 300Mb clip of the video. do you want the video before or after conversion or both. How do create a 300mb preview from the whole file and what does Head or dd mean please?
#22
Unix-Like (Linux/Bsd/...) / Avidemux goes behind the Dock ...
Last post by ConD - October 02, 2025, 07:40:43 AM
As you can see on the attached image, Avidemux window extends under the Dock if it is not placed at Left but at Bottom.
You cannot view this attachment.
#23
Avidemux-German / Avidemux Jobs und andere Frage...
Last post by jo_attila - October 01, 2025, 03:57:03 PM
Hallo...
ich bin neu hier im Forum und würde gerne mal meine Erfahrungen mit Avidemux kundtun und habe auch diverse Fragen. Vielleicht kann der eine oder andere mir dabei helfen...

Ich benutze Avidemux schon mindestens seit 10 Jahren und schneide und codiere damit meine Filme, meist aufgenommen mit einer Colossus2 als TS-Datei. Dies als HD in sehr hoher Qualität.
Mein Rechner, der die Filme umkodiert und schneidet, hat einen Ryzen 9 5950X-Prozessor, 128GB Ram und eine Nvidia RTX 3090Ti-Grafikkarte...(mein Hobby sind 3d-Animationen erstellt mit Blender und DAZ 3D)...

Diese Konstellation meines Rechners hat natürlich den Vorteil, dass Filme sehr schnell erstellt werden...z.B. ein 100min Film mit Mpeg4 AVC(x264), ein Durchlauf mit konst. Qualität 26, ist in unter 20 min.fertig...geglättet mit 3x3,aufgepeppt mit Analyzer Farben und Asharp, ausgegeben als mkv-Datei...

Seit Avidemux 2.8.0 raus ist, benutze ich es...bei 2.8.1 funktionierte der Navigationsschieber nicht flüssig und ist hakelig...vielleicht weiß jemand, ob dies behoben wurde...

Ich arbeite viel mit Avidemux Jobs...manchmal bis zu 30 Jobs am Stück...habe keine Probleme damit und es läuft einwandfrei...das Einzige, was mich stört, dass es keine Möglichkeit gibt, nach Bendigung der Jobs, wie bei Avidemux selbst, wenn man einen Job ausführt, automatisch den Computer herunter zu fahren...

Ich habe mal Wondershare UniConverter ausprobiert und da wird meine RTX 3090Ti-Grafikkarte voll ausgenutzt (Filme, wie oben beschrieben als HEVC x265 in unter 10 min fertig !!!), allerdings hat der Converter zu wenig Features und kostet Geld...
Jetzt meine Frage: Gibt es irgendeine Möglichkeit, Add-Ons oder Features meine Grafikkarte voll zu nutzen...vielleicht weiß jemand was...

jo_attila
#24
Windows / Re: Windows 11 22H2 (clean Ins...
Last post by blink182 - September 28, 2025, 05:12:06 AM
OS Name: Microsoft Windows 11 Pro
OS Version: 10.0.26100 N/A Build 26100

On Windows 11, when I run Avidemux, it either hangs on startup or sometimes crashes.

Then, if I close the app and run it again, it no longer freezes.

If I remove the folder avidemux_r241212_win64Qt5_9/avidemux_64/plugins/videoFilters, the issue goes away.

Probably, adding this Avidemux folder to Microsoft Defender's exclusions will solve the problem.

But I'm not sure.


#25
User interface and Usability / Allow arbitrary DAR for contai...
Last post by guju - September 26, 2025, 07:12:52 PM
See https://avidemux.org/smif/index.php?msg=98289

DAR:
Some typical values,
arbitrary value,
"keep" (orig DAR).
#26
Windows / Re: How to lossless cut if unc...
Last post by guju - September 26, 2025, 07:05:55 PM
Yes, indeed, as it says:
"If everything else fails - try ffmpeg".

ffmpeg actually preserves the AR,
and I use the workaround you describe as the last resort.

However I wouln't have expected that ADM doesn't allow directly.

Thx for the hint to MediaInfo trick :)

EDIT:
https://avidemux.org/smif/index.php/topic,20768.0.html
#27
Windows / Re: "Copy/copy" of Mpeg2 progr...
Last post by therube - September 26, 2025, 06:58:42 PM
FYI, 2.56 can be found here, https://sourceforge.net/projects/avidemux/files/avidemux/2.5.6/.

Anyhow, it cannot hurt to try the latest nightly too (& is apt to work better, in general).
#28
Windows / Re: How to lossless cut if unc...
Last post by therube - September 26, 2025, 06:50:19 PM
Will ffmpeg output a cut with the expected AR ?

ffmpeg -i input.mp4 -c copy -t 00:01:00 testout.mp4

If so, get the cut points with Avidemux & use ffmpeg to make the cuts.


I'll also note that sometimes MedaInfo might provide better "clues" if you click, Debug | Advanced Mode.
#29
Windows / Re: How to lossless cut if unc...
Last post by guju - September 20, 2025, 03:05:14 PM
Some times later... I'm at the same problem, but now more serious (AR is very different from 1):

The movie shows at 507 * 406 (= 5/4).

ADM info box:
=====================================================
Video
=====================================================
Codec 4CC:            H264
Image Size:            720 x 406
Aspect Ratio:            Unknown (203:288)
Frame Rate:            25.000 fps
Average Bitrate:        500 kbps
Total Duration:            00:27:23.280
Pixel format:            YUV 4:2:0, 8-bit
Color range:            Limited (MPEG)
Color primaries:        BT.709
Transfer characteristics:    BT.709
Color space:            BT.709

=====================================================
Video Codec Extradata
=====================================================
Size:                51
Extradata:            01 64 00 1E FF E1 00 1E 67 64 00 1E AC D9 40 B4 35 F9 BF F0 0C B0 12 01 00 00 03 00 01 00 00 03 00 32 0F 16 2D 96 01 00 06 68 EB E3 4B 22 C0 FC F8 F8 00


MediaInfo output:
General
Complete name               : D:\movie.mp4
Format                      : MPEG-4
Format profile              : Base Media
Codec ID                    : isom (isom/iso2/avc1/mp41)
File size                   : 118 MiB
Duration                    : 27 min 23 s
Overall bit rate            : 602 kb/s
Writing application         : Lavf57.71.100

Video
ID                          : 1
Format                      : AVC
Format/Info                 : Advanced Video Codec
Format profile              : High@L3
Format settings             : CABAC / 4 Ref Frames
Format settings, CABAC      : Yes
Format settings, Reference  : 4 frames
Codec ID                    : avc1
Codec ID/Info               : Advanced Video Coding
Duration                    : 27 min 23 s
Bit rate                    : 500 kb/s
Width                       : 720 pixels
Height                      : 406 pixels
Display aspect ratio        : 5:4
Frame rate mode             : Constant
Frame rate                  : 25.000 FPS
Color space                 : YUV
Chroma subsampling          : 4:2:0
Bit depth                   : 8 bits
Scan type                   : Progressive
Bits/(Pixel*Frame)          : 0.068
Stream size                 : 98.0 MiB (83%)
Writing library             : x264 core 142 r2431 a5831aa
Encoding settings           : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=8 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=500 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Codec configuration box     : avcC

I haven't found ANY way to lossless output a part of it.
The configure box of eg. mp4-container doesn't allow to choose DAR 5/4;
and "Derive from display width" doesn't help either.

I must miss something, as this should be simply possible, shouldn't it?
Help please.
#30
Windows / Re: Avidemux 2.8.1 cannot open...
Last post by EtoIT - September 11, 2025, 12:53:40 PM
2.8.2 nightly build works