[ProRes] Invalid frame identifier, expected "icpf" got "00000000"

[dprestegard]

Sometimes I need to use MP4Box to remux ProRes (e.g. to change frame rate etc).

Usually this works fine. I demux to an elementary stream first, then write a new MOV:

MP4Box -raw 1:output=demux.prores input.mov

MP4Box -add demux.prores output.mov

But with this sample I get

[ProRes] Invalid frame identifier, expected "icpf" got "00000000"

If I go direct from MOV to MOV it works fine.

I tried to upload to the mediafire but it says it's full...

• I looked for a similar issue and couldn't find any.
• I tried with the latest version of GPAC. Installers available at https://gpac.io/downloads/gpac-nightly-builds/
• I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...). I can share files anonymously with this dropbox: https://www.mediafire.com/filedrop/filedrop_hosted.php?drop=eec9e058a9486fe4e99c33021481d9e1826ca9dbc242a6cfaab0fe95da5e5d95

Detailed guidelines: https://gpac.io/bug-reporting/

[aureliendavid]

I tried to upload to the mediafire but it says it's full...

Sorry about that. I cleaned it up, you can upload your sample now (up to 6G).

Thanks.

[jeanlf]

Could you upload a sample file ?