> On Fri, Sep 16, 2016 at 05:25:07 +0000, Olexandr Melnyk wrote: > > ffmpeg -i Svalbard2016_g04033.mp4 -acodec copy -vcodec copy -map 0 > > output.mp4 > > > > Here, the output file I'm getting is 5MB smaller than the source file. > And > > if I do the same for a bigger source file, the size difference is bigger > as > > well. > > > Any thoughts why this is happening? > >
> > I'm going to delete the source files eventually, hence I'm afraid if I'm > > losing anything (metadata?) in the process. > > > https://dl.dropboxusercontent.com/u/30369146/Svalbard2016_g04033.mp4 > (produced > > with an original SJ5000+ camera, if that's of any help) > > Hi Olexandr -- From a quick look at your source file, I'd say ffmpeg is dropping the approximately 5MB of "free" 00s that are at the end of your source file. Take a look in a hex viewer at your source file and you will see a "free" atom with almost 5MB of 00s at the end of the file. Best -- Bert ______________________________________ Bertram Lyons, CA AVPreserve http://www.avpreserve.com _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
