[FFmpeg-user] Newb Help! Extracting pics from recovered video file/ or repair recovered video file

Carl Zwanzig cpz at tuunq.com
Mon Jul 13 20:20:27 EEST 2020

On 7/13/2020 10:06 AM, Paul B Mahol wrote:
> This can be done only if we know which codec where stored in file.


Data recovery is always uncertain, whether from a single file or from a hard 
drive- if you can't find some indicator of what's where, it's all just 
random data (this is why many file systems keep copies of the "superblocks" 
all over the disk, so if it can't find one, it might find another). Most 
video file formats don't do that.

By knowing the container, codec, and resolution, a program -might- be able 
to step through the file looking for something familiar and then, through 
trial and error, -might- be able to assemble/recover some of the data.

This is not something ffmpeg is designed to do.


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