I tryed to add an mp4 video to avi file and Avidemux told me:
"width and height are different between first and this video stream" ... Using the partial video filter later, will not work around this problem. The workaround is:
1.) "resize" / "add border" / "crop" each stream to the same resolution
2.) concatenate them together
Where find I the "resize" / "add border" / "crop" menu?
You can find these only in Video Output -> [Filters] when you have selected anything else then [Copy] for Video Output.
Video filter Manager: Transform:
- Add Borders
- Crop
- Resize
-- swsResize
-- vaapi: Resize (hardware depended)
-- vdpau: Resize (hardware depended)
I want convert my mp4 video to AVI format. Which output option (Video output) is here suitable? For Output Format is AVI Muxer siitable, correct?
The mp4 "video" probably has video with advanced video coding, and AVI is not a good choice for that.
Recode the AVI to match (same codec same dimensions as in mp4) and see if they will then merge together.
If not recode the mp4 the same way as the AVI and then merge both recoded videos.
I am using the word video liberally above.
Maybe clearer if you realise that mp4 and AVI are not video formats but different containers to hold multiple media related tracks (video, audio, subtitles, menus etc).