[FFmpeg-user] image2 examples missing `-f image2`, can that be right?

Jim DeLaHunt from.ffmpeg-user at jdlh.com
Mon Jan 8 02:12:45 EET 2018

On 2018-01-07 13:29, Moritz Barsnick wrote:
> On Sun, Jan 07, 2018 at 12:55:20 -0800, Jim DeLaHunt wrote:
>> Harrumph. "Just try it first" is practical advice for this project, it
>> seems.
> LOL. I was just referring to doubts regarding the documentation. OTOH,
> some details are not or cannot be explained, so when a user poses a
> complicated "how can this be achieved" question, I just try my best,
> making use of experience.
Thank you, I appreciate your willingness to help, and I appreciate the 
explanation. That doesn't let the project as a whole off the hook, however.
>> But I am still unsatisfied with the documentation. My philosophy
>> of documentation is that it should be an explanation and a help, not a
>> riddle.
> Unfortunately, introductions and explanations are more to be found in
> the Wiki than in the formal docs.
In the Wiki, sometimes. In the oral history of the mailing lists, 
sometimes. That they are not in the formal docs is a weakness of the 
>> I've filed a ticket noting some deficiencies in the documentation,
>> including that there's no mention that use of a pattern in an input file
>> name implies `-f image2`, and that the examples which lack `-f image2`
>> do not point out that this is correct and why it works, and that there
>> are no examples which include `-f image2`. See [1].
> This needs to be checked - I'm too lazy to analyze the source, and
> others know this functionality better by heart - but for any doc
> shortcomings you are sure about, patches are truly welcome. I have
> submitted some small stuff to ffmpeg-devel, and it was mostly accepted.
> Developers are more keen on getting code done than on pimping existing
> documentation, so volunteers are also welcome.
Well, head over to https://trac.ffmpeg.org/ticket/6950#comment:1 and see 
how welcome that ticket was.

> … I pretty much agree with
> you that there are shortcomings in some fields.
> Cheers from a former Canadian ("resident alien", lol),

Sorry, eh? :-)

Thanks again for your help,
      —Jim DeLaHunt, Vancouver, Canada

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