张弘强 <zhanghongqiang@...> writes: > ffmpeg -i video_clip.3gp -vframes 1 -ss 00:00:01 > -vf "transpose=1" output.jpg > (the first frame is not good enough)
Do you mean the first frame is black / does not show the information you would like to have in your output jpg or is there something wrong with the transoding like for example a non-keyframe gets encoded and the output image is broken? If that is the case, please provide your complete, uncut console output and a sample. Please do not top-post here, Carl Eugen _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
