[FFmpeg-devel] h264_vaapi is using vaapi or va-api

2023-08-18 Thread cfd new via ffmpeg-devel 
Hi, Folks,
    new FFMPEG user. I used gstreamer before. Now I am trying to build a rtsp 
pipeline.Would like to know whether h264_vaapi uses vaapi or va-api? these two 
are different ingstreamer.

   Thanks,
    Joe
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Re: [FFmpeg-devel] h264_vaapi is using vaapi or va-api

2023-08-21 Thread cfd new via ffmpeg-devel 
 
Thanks a lot for your reply, Haihao. FFMpeg has a flag -hwaccel in the pipeline 
of rtsp streaming for hardware acceleration. Is there a similar one in 
gstreamer as well?
   Joe
On Monday, August 21, 2023, 02:40:22 a.m. EDT, Xiang, Haihao 
 wrote:  
 
 
> Hi, Folks,
>     new FFMPEG user. I used gstreamer before. Now I am trying to build a rtsp
> pipeline.Would like to know whether h264_vaapi uses vaapi or va-api? these two
> are different ingstreamer.

Both VA-API and VAAPI stands for Video Acceleration API, h264_vaapi in FFmpeg is
based on this API. AFAIK there are two different gstreamer plugins: vaapi and
va, but they use the same API.

Thanks
Haihao

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[FFmpeg-devel] can not run encoding example of FFmpeg

2024-10-08 Thread cfd new via ffmpeg-devel 
Tried to run the following FFmpeg 
example:https://ffmpeg.org/doxygen/4.2/encode_video_8c-example.html

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FFmpeg: encode_video.c


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On Ubuntu 22.04 and Windows 11 with the latest FFmpeg. Two runs failed at 
ret = avcodec_send_frame(enc_ctx, frame);ret = -22.
What is wrong?
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