Help joining Quicktime movie files in Linux

[WalterK]

So i have several quicktime movie files from the net but rather than play the one at a time i wanted to join into one complete quicktime mov file.

However i can't find a way where it turns out correct like if you used say avisynth or quicktime pro to join.

First i tried the "cat" cmd but while it joined it only played the first file.
Second i tried using mencoder with

mencoder -forceidx -ovc copy -oac mp3lame -lameopts cbr:br=96 -o joined.mov file1.mov file2.mov

The reason i use mp3lame was because mencoder couldn't handle the audio codec using just plain -oac copy, so it was a choice between -oac mp3lame or -oac pcm (which resulted in a larger file).
Well it joined correctly and the whole file is playable unfortunately now the file is not seekable it plays like an online stream removing -forceidx or using -noidx doesn't work either.
Does anyone know of a way to make the joined file seekable without converting to another format?

[nm]

Actually you are converting to a different container format with that command line: the output file is AVI, not MOV. Use -of lavf -lavfopts format=mov to output MOV. However, I doubt that works well enough.

To fix the seeking problem, I think you must re-encode the video or perhaps mux the streams to the same file with a good muxer. That could work with mkvmerge when using Matroska as a container, or perhaps with MP4Box for MP4. I don't know Quicktime tools well enough to recommend anything for writing MOV output.