* update faq

Author: lxowalle

docs/doc/en/faq.md

@@ -327,4 +327,8 @@ When recording in non-blocking mode on MaixCam2, after starting recording, you n
 ## The video cannot be decoded, or an error is reported during the decoding process
 
 1. Ensure the video file format is h264 or mp4
-2. If the error persists, try removing the B-frames from the video, keeping only I-frames and P-frames, and then attempt again. You can use the ffmpeg to achieve this: `ffmpeg -i input.mp4 -c:v libx264 -x264-params "bframes=0" output_no_b_frames.mp4`
+2. If the error persists, try removing the B-frames from the video, keeping only I-frames and P-frames, and then attempt again. You can use the ffmpeg to achieve this: `ffmpeg -i input.mp4 -c:v libx264 -x264-params "bframes=0" output_no_b_frames.mp4`
+
+## Can the MaixCam/MaixCam-Pro/MaixCam2 auto focus?
+
+Not supported, MaixCam series cameras can only support manual focus, which means you need to manually turn the camera to focus.

docs/doc/zh/faq.md

@@ -308,4 +308,8 @@ MaixCam2在非阻塞模式下录音时, 开始录音后需要等待录音数据
 ## 视频无法解码, 或者在解码过程中提示出错
 
 1. 确保视频文件格式是`h264`或者`mp4`
-2. 如果仍然报错, 尝试将删除视频中的B帧,只保留I帧和P帧后再次尝试. 可以使用ffmpeg 命令行工具实现: `ffmpeg -i input.mp4 -c:v libx264 -x264-params "bframes=0" output_no_b_frames.mp4`
+2. 如果仍然报错, 尝试将删除视频中的B帧,只保留I帧和P帧后再次尝试. 可以使用ffmpeg 命令行工具实现: `ffmpeg -i input.mp4 -c:v libx264 -x264-params "bframes=0" output_no_b_frames.mp4`
+
+## MaixCam/MaixCam-Pro/MaixCam2 能否自动对焦
+
+不能, MaixCam系列的摄像头只能支持手动对焦，也就是需要手动去拧镜头来对焦