How to Join Videos Without Conversion using Avidemux

join videos avidemux

This post is a follow up to the one on free tools that can join videos without conversion. The explanation on how this works as well as the conditions for this to work are in that post, so make a point to read through it should you encounter problems joining your videos as detailed below.


STEPS

1. Get and install Avidemux from the homepage. It's available for multiple platforms however for the steps below I'll be using the Windows version.

2. Drag and drop your first video into the Avidemux window then give it time to index the video.
add video
Add the first video by Dragging
indexing
Give it time to index videos

3. Next, drag and drop the remaining videos in the order you wish to join them or go to File >> Append and select the file to join.

TIPS
  • For DVD VOB parts in the same folder, Avidemux will prompt you to load the additional parts after dragging the first video. Accept the prompt if you wish to join the entire video in that DVD folder, otherwise reject and add the parts that you need individually.
  • For DVDs that have title, root and/or chapter menus, make sure not to add their VOB parts. Only load the parts that have the actual video.
  • Avidemux also detects video files with sequential file names in the same folder and will prompt you if to load the rest of the files when you load the first one (e.g. Video Part 1.mp4, Video Part 2.mp4, Video Part 3.mp4)
loading
Choose Yes to load sequential videos in the same folder

4. In the right panel under Video Output and Audio Output select the Copy option.

5. Under output, select the container format you wish to output to. Be careful however with the container you choose since some are limited in the video & audio codecs they support. Avidemux will throw you an error if it detects you selected an incompatible container.
error
An example of an error due to an incompatible container

TIPS
  • If all the videos have the same container, you can select the original container for output if it's supported by Avidemux. However, if you need to output to a different container, my rule of thumb is to select the MKV muxer, as MKV supports virtually any video and audio codec out there. You can also try the AVI muxer though it may prove to be problematic with some codecs.




  • If you need a specific container, you can take a look at this comparison table for a list of the compatible video & audio codecs for every possible container out there (MP4, FLV, WebM etc.). For instance, to use the MP4 Muxer, you'll need video with one of the following codecs: Video - H.264/MPEG-4 AVC, H.263, MPEG-2 Part 2, MPEG-4 ASP, VC-1, Dirac and others Audio - MPEG-2/4 (HE)-AAC, MP3, AC-3, Apple Lossless, ALS, SLS, Vorbis
  • To check the video and audio codecs in any video, you can use MediaInfo. Windows Explorer Details Bar also lists this info when you select a video however it's doesn't work on all video
details
Windows Explorer detailing Video Properties

6. After deciding on a container and selecting it's corresponding muxer, in the menu click the SAVE icon or [Ctrl +S] then select the folder where to save the joined video.


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