ffmpeg不将一些mov视频转换为mp4

Question

I am using ffmpeg to convert videos, command works fine for all videos format including mov but it not converting some mov videos,i don't understand is it problem in mov video? although that video playing good on player The commands which i am trying :

$command = "$ffmpeg_path -i $video_path -acodec copy -ar 22050 -ab 32 -f mp4 -s 858x480 $mobile_video.mp4";

OR

$command="$ffmpeg_path -i $video_path -codec:v libx264 -preset slow -b:v 550k -maxrate 550k -bufsize 1100k -threads 0 -codec:a libfdk_aac -b:a 128k $mobile_video.mp4";

OR

$command="$ffmpeg_path -i $video_path -vcodec copy -acodec copy $mobile_video.mp4";

I try all these commands but some mov videos not converted to mp4

Answer 1

有趣的评论，因为这里有一个完整的讨论（可能的答案）： ffmpeg将mov文件转换为HTML5视频标签IE9的mp4

ffmpeg -i input.mov -c:v libx264 -c:a libfaac -strict experimental output.mp4