Avidemux Freezes on Opening Big Videos (Win 7 64bit)

[siuking666]

Hello, I'm rather new to Avidemux.

Here is my situation:
I have segments of a game campaign (recordings) and I wanted to make them into videos of 30 mins each.
Since they were not of the same length (I played whenever I wanted) so I used Avidemux to join all of them into 1 big video to make cutting them later easier.

The final video is 26-27 hours long and ~70GB.
So here is the problem, when I drag and drop/open the file in Avidemux, which I intended to use to cut my videos, thanks to its support of non-encoding; the program basically freezes, Windows says it's not responding.

Now I do not know if it is actually reading the file or simply hanged. The mouse icon shows the loading icon.
But, when I loaded those ~60 videos (that made up this big video), it did fine perfectly.

I tried 2.7 and 2.6 64-bits and they both give the same reaction.
BUT, I believe I could open a file like that successfully yesterday.

Can anyone help me? I believe it is also possible for me to use Linux and work from there if the problem lies with Windows version.
If Avidemux cannot handle such big video file, can you suggest anything else to me? I really do not want to waste time re-encoding things when I just want to cut them - but that is a rarity in video editing softwares...

[Jan Gruuthuse]

Never done this huge.
You would at least need 175 GB free on your system hard disk.
Delete the .idx2 related to the 70 GB video.
Does that video play in VLC?
What is the used the
- container (.mkv, ...)
- video codec
- audio codec/channels

you do process the video local on your system, not remote storage or usb device?

does avidemux starts indexing the large video as uou see with smaller videos.

(my system: old core i7 with 32GB ram ubuntu 16.04.3 64-bit)
will check on the file size and duration.

Progress:
- downloading 25 GB video from my nas, should take a good 10 minutes
- copying this file, 25.1 GB, to another files happens at 100 MB/sec takes around 4.2 Minutes (hard disk)
- so I can test with 4 times 25.1 GB, 7h14 minutes, 720p

Code Select Expand

General
ID                                       : 1 (0x1)
Complete name                            : BergensBanen - nrkᴴᴰ.ts
Format                                   : MPEG-TS
File size                                : 23.4 GiB
Duration                                 : 7h 14mn
Overall bit rate mode                    : Variable
Overall bit rate                         : 7 705 Kbps

Video
ID                                       : 256 (0x100)
Menu ID                                  : 1 (0x1)
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.1
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 2 frames
Format settings, GOP                     : M=2, N=50
Codec ID                                 : 27
Duration                                 : 7h 14mn
Bit rate mode                            : Variable
Maximum bit rate                         : 50.0 Mbps
Width                                    : 1 280 pixels
Height                                   : 720 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 50.000 fps
Standard                                 : PAL
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Color range                              : Limited
Color primaries                          : BT.601 NTSC
Transfer characteristics                 : BT.601
Matrix coefficients                      : BT.601

Audio
ID                                       : 257 (0x101)
Menu ID                                  : 1 (0x1)
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format version                           : Version 4
Format profile                           : LC
Muxing mode                              : ADTS
Codec ID                                 : 15
Duration                                 : 7h 14mn
Bit rate mode                            : Variable
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 48.0 KHz
Frame rate                               : 46.875 fps (1024 spf)
Compression mode                         : Lossy
Language                                 : English

Menu
ID                                       : 4096 (0x1000)
Menu ID                                  : 1 (0x1)
Duration                                 : 7h 14mn
List                                     : 256 (0x100) (AVC) / 257 (0x101) (AAC, English)
Language                                 :  / English
Service name                             : Service01
Service provider                         : FFmpeg
Service type                             : digital television

[Jan Gruuthuse]

- avidemux 2.7 loading 4 videos, indexing takes over 5 minutes each at 24500 fps.
- avidemux can handle easily 28 hours video in 720P (100.4 GB), there could be an audio issue
- Limitations could be your hardware: memory, hard disk: speed or the operating system.

[Jan Gruuthuse]

As for now I would stay below 8 hours of video.
The amount of data flowing thru the system, seems to much to handle.

change your workflow:
- load 1 hour video
-- edit loaded video
-- when finished editing
--- mark 1st 30 minutes [A ] [ B]
--- save video
--- cut away 1st 30 minutes.
- load additional video up to 1hour

and repeat the process

[xtro]

Interesting, but I'm not surprised at the size of the file causing freezing. However,  I noticed 'freezing' in any sized file using 2.7.0 version. The Windows system reports that the program(Avidemux) is not responding, wait a few minutes and it starts to encode. I reported this in my 1st post here(as yet unanswered!) under 'Denoise settings and Bugs.'

[Jan Gruuthuse]

Not Freezing but rather pausing
Could be several causes:
- hardware bottleneck
- cooling issues. While encoding video with CPU 4 core: 'i7-3770k' load is at 100%, temperature raises by 30° to 35° Celsius doing so.
- Windows is doing something else
- 2 core mobile processor
- Video still been indexed?
- ...

Can you start avidemux from dos command line and leave that box open, do you see text output while avidemux is working. Perhaps this will give you a clue.

[xtro]

That could explain it!  It is not freezing or a bug as such, but rather pausing due to the processor's algorithms.  I use a Intel Celeron Duo Core 2ghz and this might be the reason why I see a pause in my XP system before an encode starts. I also have the same type processor using a 64 bit Win7 platform and see the same pausing.  The bigger the file the worse pausing resulting in a long system freeze when system resources are overused/drained like an overclock.

[zakk]

I don't think it's freezing, it's just analyzing or creating an index, try with a smaller part and multiply the time used.

[Jan Gruuthuse]

If the pause is happening, check the hard disk LED: if flashing or on: a lot of I/O happening on the hard disk.