[FFmpeg-user] Minimum configuration settings for ffprobe-only

[Eugene Gekhter]

On Mon, Mar 31, 2014 at 1:17 PM, James Darnley <james.darnley at gmail.com>wrote:

> On 2014-03-31 17:39, Eugene Gekhter wrote:
> > I'm aware of this - for example it can read a canopus hqx .avi  and know
> > the codec parameters, but the last line of the ouput will be unsupported
> > codec at stream 0. We can depend on the logic if that message does not
> > appear, then that file can be used by "ffmpeg -i ..." ?
>
> No you can't.  ffprobe will not check the whole file for integrity.
>
> Someone could make a file in which the first 20MiB would look like a
> correct file and then stick 20GiB worth of null bytes on the end.
>
> Or more likely there is a small corruption in the middle of the file
> which causes an unrecoverable error when decoding causing ffmpeg to abort.
>
>
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>
That's possible, but we're talking about 98/2 here.

98% of the time ffprobe would be dealing with normal consumer-generated
files. Your example above is the exception, not the norm.