[FFmpeg-user] 回复: pix format change

小土豆 766091683 at qq.com
Sat Dec 5 04:12:33 EET 2020

  I am writing "c" code, I subscribed the wrong mail list. Sorry to interrupt you.

------------------ 原始邮件 ------------------
发件人:                                                                                                                        "FFmpeg user questions"                                                                                    <cpz at tuunq.com>;
发送时间: 2020年12月4日(星期五) 晚上11:57
收件人: "ffmpeg-user"<ffmpeg-user at ffmpeg.org>;

主题: Re: [FFmpeg-user] pix format change

On 12/4/2020 12:12 AM, mjl wrote:
>     First, I use av_hwframe_transfer_data to change format to NV12,
>     Then, I try to change NV12 to rgb24 using sws_scale, but it turns out to
> be NULL.

Are you writing 'c' code or using the ffmpeg executable?  The former isn't 
covered by this mailing list (use 
https://lists.ffmpeg.org/mailman/listinfo/libav-user/) and for the latter 
you need to show us the complete command line being used and the command 
output. (See also https://ffmpeg.org/mailing-list-faq.html)


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