Video file "corrupted" ?

[alan_bstard]

Hello
(Sorry, English is not my native language)
I have a problem with a video file created by VLC.
I used the functionality offered by VLC to record my screen (i have recorded my Windows desktop).
So I have a +/- 2.2GB MP4 video file that "should" do a little more than 2 hours but that only indicates 00h53mn58s. If I refer to the date of creation, the video must make 02h06mm. Yet I try to open it with VLC, Potplayer, Windows Media Player, SM Player, Film and TV, all indicate 00h53mn58s. The trick is that the video continues to read well after this limit and I no longer have the possibility to forword it "manually", and the counter no longer scrolls. I did not read it until the end but there is a high probability that it did fine 02h06mm. I made a copy that I tried to convert with Free Video Converter but the software failed. I made a conversion with "Handbrake", it pulls out a 340MB M4V file but this file, compare to the original, stops at 00h53mn58s. I would like to be able to modify this file so that it displays its actual duration, can manually advance this video and incidentally can edit it. Has anyone already faced a similar problem and if so, how to adjust it? Thank you in advance for your answers.

[ProWo]

Load your mp4 in clever Ffmpeg-GUI, (get the newest beta), click main, multiplex, video- and audiostreams are already selected, click on target file, accept the proposed filename, set mp4 as container, click on multiplex, done.
Your new mp4 file should work fine now.

[butterw]

Presumably you just need to remux your file, which is a fast, lossless (no re-encode) operation:

ffmpeg -i "input.mp4" -c copy "output.mp4"
or
open in Avidemux and save

[alan_bstard]

Wow !!! Quick responses
Thanks a lot to both of you.
Clever FFMPEG GUI worked well but it recorded a video of 990MB and 54mn. Avidemux has reconstructed the video file which is effectively 2H06MN (like a was thinking). Thanks again both of you. I still ask myself why VLC has been able to act like that ???