[Libav-user] avcodec_encode_video2 failed (returned -12 as return value)

[Mark Ma]

On 2013/11/21 19:40, Clément Bœsch wrote:
> On Thu, Nov 21, 2013 at 06:37:16PM +0800, Mark Ma wrote:
>> Hi everyone,
>> Now I'm getting yuv frames from a video monitor every second and call
>> avcodec_encode_video2() to convert them to mpeg frame. At first
>> avcodec_encode_video2() works well, but after about 1 minute, it keeps
>> returning -12 as return value.  But what's the meaning of -12?
>>
>> Any suggestion is appreciated.
>>
> Try:
>
>    #include <libavutil/error.h>
>
>   ret = avcodec_encode_video2(...);
>   if (ret < 0)
>     av_log(0, 0, "Err: %s\n", av_err2str(ret));

Hi,
After including error.h and using av_err2str(), I got following compilation error: Could not find the identifier "av_err2str"