[FFmpeg-user] 'moov atom not found' during concat for mp4s that seem fine

[Moritz Barsnick]

On Fri, Nov 18, 2016 at 10:41:22 -0800, Zamir Khan wrote:
> /$ ffmpeg -f concat -safe 0 -protocol_whitelist file,http,https,tcp,tls -f mp4 -i segments.txt -c copy output
[...]
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9b99010600] moov atom not found
> segments.txt: Invalid data found when processing input/

You're telling ffmpeg that segments.txt is an MP4 file ("-f mp4"), but
it isn't. "-f concat" was the correct choice, please drop the "-f mp4".

> These videos are hosted on an S3 bucket, so I initially addressed them at
> those addresses, but when I got this error, I downloaded and addressed them
> locally, so the location of the videos appears to not be the issue.

They should probably be accessible if you provide the whitelist option
you used above.

Cheers,
Moritz