> 2021年12月3日 下午6:04，Andreas Rheinhardt 写道：
>
> Yu Yang:
>> fftools/ffmpegc When `ost->last_frame` is NULL, 'SEGV' occurs when
>> accessing its pts.
>>
>> libavutil/framec `ost->last_frame` may be set NULL by av_frame_alloc(). In
>> this situation，
>> av_frame_unref() and av_
Yu Yang:
> fftools/ffmpegc When `ost->last_frame` is NULL, 'SEGV' occurs when accessing
> its pts.
>
> libavutil/framec `ost->last_frame` may be set NULL by av_frame_alloc(). In
> this situation，
> av_frame_unref() and av_frame_free() do nothing. Frame is
> no
fftools/ffmpegc When `ost->last_frame` is NULL, 'SEGV' occurs when accessing
its pts.
libavutil/framec `ost->last_frame` may be set NULL by av_frame_alloc(). In this
situation，
av_frame_unref() and av_frame_free() do nothing. Frame is not
released.
```c
// in
