MP4Box 1.1.0-DEV compiled standalone from a recent download of master branch
Updating handler names for subtitle tracks
mp4box -name 3=SubtitleHandler -name 5=NewHandlerName input.mp4

The process works and data seems to be OK, the video plays, but there seems to be some corruption, and no further processing is possible
 mp4box -info input.mp4
[iso file] Unknown top-level box type 9.2.
[iso file] Incomplete box 9.2. - start 577023550 size 1635149354
[iso file] Incomplete file while reading for dump - aborting parsing

The rest of the output is as expected

A previous attempt editing only one handler name referenced box type .100

ffmpeg doesn't appear bothered


In place editing corrupts file
This is a GitHub Issue
repo:gpac
owner:gpac
Title : In place editing corrupts file
Issue date:

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MP4Box 1.1.0-DEV compiled standalone from a recent download of master branch
Updating handler names for subtitle tracks
mp4box -name 3=SubtitleHandler -name 5=NewHandlerName input.mp4

The process works and data seems to be OK, the video plays, but there seems to be some corruption, and no further processing is possible
 mp4box -info input.mp4
[iso file] Unknown top-level box type 9.2.
[iso file] Incomplete box 9.2. - start 577023550 size 1635149354
[iso file] Incomplete file while reading for dump - aborting parsing

The rest of the output is as expected

A previous attempt editing only one handler name referenced box type .100

ffmpeg doesn't appear bothered


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