On Fri, Jan 13, 2017 at 1:10 AM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote:
> 2017-01-11 12:24 GMT+01:00 Moritz Barsnick <barsn...@gmx.net>:
>> On Tue, Jan 10, 2017 at 17:05:47 +0100, Carl Eugen Hoyos wrote:
>>> +                enum AVPixelFormat pix_fmt = 
>>> avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi,
>>> +                                                                 
>>> par->bits_per_coded_sample);
>>> +                if (par->format != pix_fmt && par->format != 
>>> AV_PIX_FMT_NONE)
>>> +                    av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written 
>>> to vfw mkv, output file will be unreadable\n",
>>> +                          av_get_pix_fmt_name(par->format));
>>
>> Should it really be an error (and not a warning) if its detection
>> doesn't change ffmpeg's behavior?
>
> Just copying what avi and mov muxer do.
>
> Note that (many) decoders print errors and (can) continue.
>
> (I believe library users can - and do - put rawvideo into standard
> containers and force the right pix_fmt on reading.)
>

That seems silly, we shouldn't log an error that a file will be broken
and then still write it. Muxers should be strict and write only valid
files.

- Hendrik
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