[FFmpeg-user] Can ffmpeg transcode from mp4(h264/aac) to tsparallel
Steven Liu
lingjiujianke at gmail.com
Wed Sep 26 11:47:31 CEST 2012
Hi Roger Pack and Tony
I've tried the setpts, but the start time is always wrong.
command line :
ffmpeg -ss 00:00:17.00 -t 00:00:34.00 -copyts -y -i Hotcha.mkv
-strict -2 -stats -vcodec libx264 -time_base 17 -preset ultrafast
-b:v 2000k -r 15 -acodec aac -ar 41000 -ab 128k -s 480x320 -f mpegts
-vsync 1 -vf setpts=17.00+PTS -af asetpts=17.00+PTS -debug_ts -intra
-g 1 b2.ts
Input #0, mpegts, from 'b2.ts':
Duration: 00:00:33.93, start: 1.400000, bitrate: 2102 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: h264 (Constrained Baseline)
([27][0][0][0] / 0x001B), yuv420p, 480x320 [SAR 32:27 DAR 16:9], 15
fps, 15 tbr, 90k tbn, 30 tbc
Stream #0:1[0x101]: Audio: aac ([15][0][0][0] / 0x000F), 0 channels, s16
Is there have some parameter wrong?
2012/9/26 Roger Pack <rogerdpack2 at gmail.com>:
>> but i want the start time of ts file is the time of -ss,
>> like this:
>>
>> Input #0, mpegts, from '/data/m3u8/ipad0_0.ts':
>> Duration: 00:00:10.00, start: 10.000000, bitrate: 571 kb/s
>
> I presume you want to specify that the PTS times within the TS file
> start at "10.0"?
>
> I believe there is a SETPTS filter that might help.
> -r
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