[FFmpeg-user] ffmpeg: Setting GOP (i-frame interval)

Andy Civil andycivil at gmail.com
Thu Sep 15 15:58:19 CEST 2011


It could be this?
http://ffmpeg.org/trac/ffmpeg/ticket/157

On 2011-09-15 9:33 AM, johnnydepp wrote:
> I am converting one video format (.vob format) to another format (.ts
> segments having h264 video).
>
> Using this command:
>
> ffmpeg -ss 0:0:0 -i "D:\sample videos\input9.vob" -ac 2 -f mpegts
> -acodec libmp3lame -ar 48000 -ab 64000 -s 720x408 -vcodec libx264 -b 1200k
> -flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -subq 5
> -trellis 0 -refs 1 -coder 0 -me_range 16  -keyint_min 1 -sc_threshold 40
> -i_qfactor 0.71 -bt 1300k -bufsize 524288 -qmin 2 -qmax 48 -aspect 1.7647059
> -g 10 -r 30 -async 2  out.ts
>
>
> I want out.ts to have "i-frames at intervals of 10 frames'
>
> Problem: Output file contains i-frames at the interval of 126 frames.
>
> Am I missing some command line parameter?
>
> (For the record, with previous versions of ffmpeg its perfectly putting
> i-frames at required interval. But with new version only its creating
> problem) .
>
>
>
>
> --
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