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I've had a long-running problem with videos saved from my 411S camera via FTP to a local Raspberry Pi server. The videos all play fine, but a large proportion (maybe 25%?) have errors in the video headers. It's not been too much of a problem in the past as my software has seemingly tolerated the errors, but a new version is more strict and just won't open the videos any more.If I try to open one of the videos in FFMPEG, I get [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7ff492000400] error reading header [path]: Operation not permitted.I've put an example video here: https://www.dropbox.com/s/tu4ddegh6yn05nu/ErrorReadingHeader.mp4?dl=0Grateful for any insight into what's going wrong - the file is unmodified (other than being renamed and uploaded to Dropbox) since being saved onto my computer using the FTP feature of the Reolink 411S.PS - I've just updated the firmware to the latest version, and reset all settings / configuration, but no improvement...Thanks!
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7ff492000400] error reading header [path]: Operation not permitted
I had no problems in playing your video using the VLC-player (https://www.videolan.org/vlc/).Since VLC is supported on quite a number of platforms, probably you might try this or search for someone who ported it to a Raspberry-Pi server (I don't own a Raspberry-Pi to try it for you unfortunately ).Another option might be to convert it using something like Handbrake (https://handbrake.fr and https://en.wikipedia.org/wiki/HandBrake).Although FFMPEG is used quite often by various (embedded)video-app developers you might end up using older versions which didn't fix the specific error you experienced.
So just as an update, I got an answer from another source (https://superuser.com/questions/1462076/25-of-my-mp4-have-error-reading-header-in-ffmpeg-opencv-but-videos-all-pl).Basically, it sounds like some of the metadata for the videos saved from my camera isn't quite standard. The answer at the link above explains better than I ever could, but would be grateful if someone from Reolink could take a look and see whether that can be fixed / changed in a firmware update. I've got a workaround for now, and sounds like there will be a patch to FFMPEG shortly to make it tolerate this type of metadata, but would be great if the camera produced "standard" .mp4 videos by default.
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