[FFmpeg-devel] ffmpeg transcode from mkv to ts in parallel mode problem

[Andrey Utkin]

2012/10/9 Steven Liu <lingjiujianke at gmail.com>:
> Hi All,
>
>          My testing environment is bellow:
>
>          host1: 192.168.0.101
>          host2: 192.168.0.102
>
>          host1 transcode test.mkv from 00:00:00.00 to 00:00:10.00
>          host2 transcode test.mkv from 00:00:10.00 to 00:00:00.00
>
>          I have try use command on host2  bellow:
>            ffmpeg -v debug -y -i kaka.mkv -strict -2 -ss 00:00:10.00
> -t 00:00:10.00 -vcodec copy -acodec aac  -v debug -vf setpts=PTS+10/TS
> -af asetpts=PTS+10/TS -f mpegts  -bsf h264_mp4toannexb b.ts
>
>          When i use ffmpeg -i to see the info ,it's wrong, always from
> 0s, message bellow:
>
>         ffmpeg version N-45185-gb49d94e Copyright (c) 2000-2012 the
> FFmpeg developers
>   built on Oct  9 2012 21:18:01 with gcc 4.4.5 (GCC) 20110214 (Red Hat 4.4.5-6)
>   configuration: --enable-libx264 --enable-gpl --disable-yasm
> --libdir=/usr/local/lib --enable-debug --enable-debug=3
> --enable-avfilter
>   libavutil      51. 74.100 / 51. 74.100
>   libavcodec     54. 65.100 / 54. 65.100
>   libavformat    54. 30.100 / 54. 30.100
>   libavdevice    54.  3.100 / 54.  3.100
>   libavfilter     3. 19.102 /  3. 19.102
>   libswscale      2.  1.101 /  2.  1.101
>   libswresample   0. 16.100 /  0. 16.100
>   libpostproc    52.  1.100 / 52.  1.100
> Input #0, mpegts, from 'b.ts':
>   Duration: 00:00:10.14, start: 1.399878, bitrate: 14175 kb/s
>   Program 1
>     Metadata:
>       service_name    : Service01
>       service_provider: FFmpeg
>     Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B),
> yuv420p, 1920x796, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
>     Stream #0:1[0x101](eng): Audio: aac ([15][0][0][0] / 0x000F),
> 48000 Hz, 5.1, s16, 79 kb/s
>
>
>
>
> perhaps the PTS or PCR is wrong, but how to modify the PTS or PCR
>
>
> I Just want to try the function look like -f segment  parallel on
> different computer

Wrong maillist, this should be discussed in ffmpeg-user.

As a suggestion, try options -copyts and -mpegts_copyts
But actually i am not always able to preserve timestamps offset i want
to, with ffmpeg utility... If you have no success, try making up
simple application linked with libavformat. You can discuss it in
libav-user maillist.

-- 
Andrey Utkin