[FFmpeg-user] convert video from mkv to mp4 failed

[David Favor]

mz wrote:
> Hey, Guys:
>  I'd just convert my videos from mkv to mp4. The source has several substreams as bellow: 
> 
> 
> ---------------------------------------------------------------------------------------
>   Metadata:
>     creation_time   : 2013-03-27 14:06:48
>   Duration: 00:44:21.98, start: 0.000000, bitrate: 4884 kb/s
>     Stream #0:0(chi): Video: h264 (High), yuv420p(tv, bt709), 1280x720 [SAR 1:1
> DAR 16:9], 25 fps, 25 tbr, 1k tbn, 50 tbc (default)
>     Stream #0:1(chi): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
>     Metadata:
>       title           : 鍥借
>     Stream #0:2(chi): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
>     Metadata:
>       title           : 绮よ
>     Stream #0:3(chi): Subtitle: subrip (default)
>     Metadata:
>       title           : 绠€浣
>     Stream #0:4(chi): Subtitle: subrip
>     Metadata:
>       title           : 绻佷綋
>     Stream #0:5(eng): Subtitle: dvd_subtitle, 720x576
>     Metadata:
>       title           : 鑻辫
> 
> ------------------------------------------------------------------------------------------
> First, pick out the subtitle:
> ffmpeg -i  HDJ.Sergeant.Tabloid.Ep01.20130311.HDTV.720p.
> x264.2Audio-CHDTV.mkv -map 0:3 a.srt
> 
> 
> Then, I use the following command to do converting works: 
> ffmpeg -i HDJ.Sergeant.Tabloid.Ep01.20130311.HDTV.720p.
> x264.2Audio-CHDTV.mkv -map 0:0 -map 0:1 -map 0:2 -c:a copy -c:v -vf subtitles=a.
> srt HDJ.Sergeant.Tabloid.Ep01.20130311.HDTV.720p.x264.2Audio-CHDTV.mp4
> 
> 
> 
> Now, the problem is: the result has no sound and subtile.
> 
> 
> Anybody tell me how can I do this!!!!!!!???????

In your command there's -map 0:0 and in your video streams begin with
Stream #0:1(chi): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s - so try
starting with 0:1 instead of 0:0 and see how that works.

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