我有一个 * MP4 文件,该文件是2分钟时间。现在,它已经音轨从30秒开始高达1.10分。前 30岁,其余之后 1.10min 是空白的。
I have an *.mp4 file which is duration of 2 min. Now it has audio track starting from 30 seconds upto 1.10 min. The rest before 30s and after 1.10min is blank.
现在的问题是,当我尝试在 videoview 来播放或媒体播放器那么,它起着从音频权开始播放视频,而从它的实际位置。我想这对多个电话相同的结果。
Now the problem is when I try to play it in videoview or mediaplayer then, it plays audio right from beginning of the video rather from its actual position. I tried this on multiple phones with same result.
当我在玩同一个视频 MXPlayer 或的Windows(VLC);它起着正常。
When I play the same video in MXPlayer or in Windows(VLC); it plays properly.
如何解决这个问题?
修改
我用 -itsoffset 的ffmpeg命令实现上面的视频。
I have used -itsoffset command of Ffmpeg for achieving above video.
ffmpeg -y -i a.mp4 -itsoffset 00:00:30 sng.m4a -map 0:0 -map 1:0 -c:v copy -preset ultrafast out.mp4先谢谢了。
推荐答案好吧最后我只需添加1选项解决了这个问题 -async
Ok finally I solved the problem by adding just 1 option -async
ffmpeg -y -i a.mp4 -itsoffset 00:00:30 sng.m4a -map 0:0 -map 1:0 -c:v copy -preset ultrafast -async 1 out.mp4在默认情况下的音频/视频时间戳被拉伸相互匹配;这是我从intial音频起点的问题,甚至给以后 itsoffset 。
根据 ffmpeg的文件使用 异步1 纠正只有音频的初始时间戳。我知道,这个选项去precated;但无论如何它解决了我的情况。
As per Ffmpeg Doc using async 1 corrects the initial timestamp of audio only. I know that this option is deprecated; but anyhow it solved my case.
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