(for f in do echo 'file '$f'' done) | ffmpeg -protocol_whitelist file,pipe -f concat -safe 0 -i pipe: -vcodec copy -acodec copy $output output.mp4'Įxit # determine all # get the last argument (output file) I am using the script from another AskUbuntu answer, called concatmp4 here: #!/usr/bin/env bashĮcho 'Usage: `basename $0` input_1.mp4 input_2.mp4. Given that you run a video streaming company, sounds like the commercial route would be best.I want to merge mp4 files via the concat demuxer and cannot get it to work with a script. There are free versions such as, or commercial media recovery services. There are a few webpages and tools that explain how to reconstruct the MOOV atom from a known, working file of exactly the same template. See docs.īut yeah, your input file into FFmpeg was not complete, therefore MOOV atom not found. Separate moof mitigates against ungraceful truncation. If it was not you who produced the input file then maybe it got truncated during file transfer?Ī useful tip with MP4 is the inefficient -movflags separate_moof, see mov muxer options at.

If there is a risk that a recording will get ungracefully terminated, TS is a better format than MP4.

record to TS file, rather than MP4/MOV in future. Yeah +1, suggests that the original file was incomplete or corrupt.

Ffmpeg mp4 atom