[FFmpeg-devel] [PATCH] mpeg4videodec: silence "Invalid and inefficient vfw-avi packed B frames detected" warning

Don Moir donmoir at comcast.net
Tue Sep 3 16:38:35 CEST 2013

Le septidi 17 fructidor, an CCXXI, Don Moir a écrit :
>> For end users I deal with:
>> 1) they are not just sitting watching a video but performing a show of one type or another
>> 2) they would have no clue what the warnings are all about
>> 3) there are a lot of spurious warnings I don't have much of a clue about but I get the scope of it
>> 4) they display multiple videos at same time for various reasons and
>> would not even know what video the warnings are coming from
>> sometimes (without some leg work by me to figure it out and all for
>> nothing becasuse of above)

> They are the users you deal with, they are in no way the only users of
> FFmpeg. FFmpeg is for all its users, not just the small subset you are
> interested in.

Yes of course and never implied otherwise... Just said I have no need of the warnings and users I deal with don't either. They are 
busy doing a show and probably not even at a computer but controlling show external device.

I am not trying to dictate how someone should use ffmpeg. If some wants to analyze their videos there are simple tools to do this.

> Surely you can realize that people may be interested in knowing that their
> videos will not play on some low-end players and how to repair them, even if
> you do not have to use these low-end players yourself.

Low end players or low end computers ??

again lots of tools already to analyze if thats what they want... And they don't need to be burdoned by it when doing a live show...

I always develop on a low end computer compared to the standards of the day. Keeps me in touch with reality. I have a very fast 
machine right next to me that I only use for additional testing but not developement.

>> These people are not developers and don't have any idea about things like
>> this. Mostly they use quality videos.

> And quality hardware, and quality software. Lucky them.

Actually a broad range... But most doing live video entertainment, laser shows, etc, are not going to be using a half ass machine 
that might crap out during the middle of a show.

> But you do not have to be a developer to be annoyed by a video stuttering on
> an old CPU.

Thats right and like I said I use a slower machine for dev to keep an eye on things... Again people doing live entertainment are 
pretty much not going to use a junk computer.

>> I could give an option and worry about thread safety and locking but
>> it would be pointless.

> False analogy.

Not at all...

I get the impression that you think everyone sits around with some command line player displaying warnings while the video plays in 
another window.

Its not like that all for me and users... Overlays, thumbnails, Multiple videos to multiple screens, controlled from who knows 

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