fix mp4 file ([mov,mp4,m4a,3gp,3g2,mj2] moov atom not found)

[luna80]

Hi,
I have a problem with some gopro mp4 files, I tried to play those with several player but they doesn't works, if I try to fix with ffmpeg with the command

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ffmpeg -i GX010018.MP4 -vcodec copy -acodec copy -movflags faststart out.mp4

i get this error

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[mov,mp4,m4a,3gp,3g2,mj2 @ 0x557822cb4180] moov atom not found
GX010018.MP4: Invalid data found when processing input

It's strange because gopro split the records in files of 4GB if bigger and only those files give me problems, the others (with less of 4GB size) are ok

I download files from gopro with gphoto2, same issue on two different computers

can somebody help me to fix those mp4 files? thanks a lot in advance

[fedeliallalinea]

Maybe you should merge splitted mp4 files?

[luna80]

I thought and now I'm emerge openshot, when finish I'll try.

I tought I can play single files too for this reason I open this thread

thanks

[luna80]

I cannot merge the files in any way, all the ways tried tell me the file type is not supported or corrupt

[luna80]

I think gphoto2 wrong download splitted files from gopro (usb), I tried to get files from a microSD (through adapter) and they are not corrupted

[Zucca]

Hm. I wonder if the files are splitted without any termination..?

You could try

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cat video_01.mp4 video_02.mp4 video_03.mp4 > full_video.mp4

... and then try to play it.

[wanne32]

4GiB sounds like an overflow wouldn't wonder if everything after 4GiB ist just empty or a copy of the 4 GiB before. Since mp4 relies on absolut positioning it is horrible to recover from partial files.
If you are luck it is only a transmission problem. Maybe you can try an other transfer method. (Switching between Wifi/USB/Card exchange...)