Changing Duration of Mp4 - Hex Editor












0















Is there a way to make my mp4 file seem to have a longer or shorter duration than it actually has?
I tried playing around with an Hex Editor, but being a noob i couldn't make it work.










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  • Could you help us understand why you're trying to do this?

    – slhck
    Jan 10 at 16:03













  • mostly curiosity I guess, I wanted to see if that could trick Instagram to upload longer Videos to the feed.

    – Lukas Mikkel Doppler
    Jan 10 at 16:15











  • Just leaving a pointer here, you have to look at the MP4 (MPEG-4 Part 14) specification and modify the duration attribute of the tkhd track header atom.

    – slhck
    Jan 10 at 16:57
















0















Is there a way to make my mp4 file seem to have a longer or shorter duration than it actually has?
I tried playing around with an Hex Editor, but being a noob i couldn't make it work.










share|improve this question























  • Could you help us understand why you're trying to do this?

    – slhck
    Jan 10 at 16:03













  • mostly curiosity I guess, I wanted to see if that could trick Instagram to upload longer Videos to the feed.

    – Lukas Mikkel Doppler
    Jan 10 at 16:15











  • Just leaving a pointer here, you have to look at the MP4 (MPEG-4 Part 14) specification and modify the duration attribute of the tkhd track header atom.

    – slhck
    Jan 10 at 16:57














0












0








0








Is there a way to make my mp4 file seem to have a longer or shorter duration than it actually has?
I tried playing around with an Hex Editor, but being a noob i couldn't make it work.










share|improve this question














Is there a way to make my mp4 file seem to have a longer or shorter duration than it actually has?
I tried playing around with an Hex Editor, but being a noob i couldn't make it work.







video metadata mp4 hexadecimal






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 10 at 16:02









Lukas Mikkel DopplerLukas Mikkel Doppler

1




1













  • Could you help us understand why you're trying to do this?

    – slhck
    Jan 10 at 16:03













  • mostly curiosity I guess, I wanted to see if that could trick Instagram to upload longer Videos to the feed.

    – Lukas Mikkel Doppler
    Jan 10 at 16:15











  • Just leaving a pointer here, you have to look at the MP4 (MPEG-4 Part 14) specification and modify the duration attribute of the tkhd track header atom.

    – slhck
    Jan 10 at 16:57



















  • Could you help us understand why you're trying to do this?

    – slhck
    Jan 10 at 16:03













  • mostly curiosity I guess, I wanted to see if that could trick Instagram to upload longer Videos to the feed.

    – Lukas Mikkel Doppler
    Jan 10 at 16:15











  • Just leaving a pointer here, you have to look at the MP4 (MPEG-4 Part 14) specification and modify the duration attribute of the tkhd track header atom.

    – slhck
    Jan 10 at 16:57

















Could you help us understand why you're trying to do this?

– slhck
Jan 10 at 16:03







Could you help us understand why you're trying to do this?

– slhck
Jan 10 at 16:03















mostly curiosity I guess, I wanted to see if that could trick Instagram to upload longer Videos to the feed.

– Lukas Mikkel Doppler
Jan 10 at 16:15





mostly curiosity I guess, I wanted to see if that could trick Instagram to upload longer Videos to the feed.

– Lukas Mikkel Doppler
Jan 10 at 16:15













Just leaving a pointer here, you have to look at the MP4 (MPEG-4 Part 14) specification and modify the duration attribute of the tkhd track header atom.

– slhck
Jan 10 at 16:57





Just leaving a pointer here, you have to look at the MP4 (MPEG-4 Part 14) specification and modify the duration attribute of the tkhd track header atom.

– slhck
Jan 10 at 16:57










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