Cannot use slider in MP4 files

[Namrepus221]

ok if I have a 2 hour MP4 file (A movie. Legally obtained I assure you), if I try to move my slider to a point in the film (the funniest part). it simply jumps to the area I selected, freezes whatever was on the screen whenever I moved the slider, no audio plays, and the counter for the time continues playing as if the file was perfectly playing.

The only way I can move to parts of videos is if I use x8 speed directly from the beginning and hope to god I don't forget about it or else I have to start the whole movie over again cause the slider won't allow me to go back lest I get the frozen screen, no audio, moving timer thing again.

[Arite]

Try fixing the *.mp4 using a tool such as mp4UI. Create a new MP4 file and then import the tracks from the broken one, ensuring that "Make ISMA complient (after adding track)" is selected before doing so. Then try the newly create *.mp4 in VLC.

If that doesn't help then you could remux the tracks into the Matroska container format (*.mkv) instead using mkvmerge GUI (use drag and drop etc. then mux to an *.mkv file) which is a part of mkvtoolnix.

If that still makes no difference then what are the video/audio codecs used in the *.mp4 file (in VLC press "Ctrl+I" and click on the "Advanced information" tab).

Cheers, Arite.

[Namrepus221]

The MP4 isn't broken as far as I know.

It plays perfectly in Quicktime, the slider and everything works well.

I'll try "fixing" it. but I dunno if it will help.

Thanks

[Arite]

It may not be "broken" as such, but may not, for example, be ISMA complient (not sure whether it will make any difference, but it worth a try). If not then muxing the file into an *.mkv should fix it.

Arite.