[FFmpeg-user] about merging Multiple videos together

[akash kulkarni]

thanks , Thats nice of you Ajoy i will try it and check for possibilities

On Fri, Jul 28, 2017 at 9:16 PM, Ajoy Devadawson <ajoydawson at gmail.com>
wrote:

> Akash,
>
> May be there is a better way to fix than my suggestion.  My approach was to
> change for each file to gop of 30 and fps of 30 thro ffmpeg and then concat
> the files.  I think the concat function is looking for I frames to concat
> and it might be confused if it has less I frames to work with. Try this and
> if it doesn't work, try even reducing gop and fps to 15. After all, you
> have a high bit rate of 9000k for a low resolution.  I will be glad to see
> how it works.
>
> Ajoy
>
> On Fri, Jul 28, 2017 at 6:47 AM, akash kulkarni <kul.akash123 at gmail.com>
> wrote:
>
> > Thanks ajoy,
> >
> > I have
> >  Input #0, mpegts, from 'MTS_567i50_002.MTS':
> >  Duration: 00:01:32.15, start: 0.000011, bitrate: 9424 kb/s
> >  Program 1
> >  Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p,
> > 720x576
> >  [SAR 2304:2160 DAR 4:3], 25 fps, 50 tbr, 90k tbn, 50 tbc Stream
> >  #0:1[0x1100]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo,
> >  s16p, 192 kb/s
> >
> > such kind of files which i wanted to merge with 720*576 resolution
> > These files has GOP size of 33, After i  merge them at each joint point
> > they jerk is coming
> > when i looked frames with some application there are few frames of next
> > video mixed with
> > previous video and sometimes few black frames also so how could i remove
> > such unwanted frames and
> > make my video smooth.
> >
> > these videos Do have i frames after each 33rd frame so no question of key
> > frames would be there i guess.
> >
> > so can you tell me solution over this.
> >
> >
> > On Fri, Jul 28, 2017 at 2:12 AM, Ajoy Devadawson <ajoydawson at gmail.com>
> > wrote:
> >
> > > I guess it could be a problem with keyframes.  If you could assign
> > > keyframes densely, this problem could be avoided.  Try assigning 1
> > keyframe
> > > per second for your individual files, then concat would join without
> any
> > > jerk.
> > >
> > > On Thu, Jul 27, 2017 at 12:03 AM, akash kulkarni <
> kul.akash123 at gmail.com
> > >
> > > wrote:
> > >
> > > > DO i need to explain it more. can any 1 help out with this issue
> > > >
> > > >
> > > > On Wed, Jul 26, 2017 at 3:45 PM, akash kulkarni <
> > kul.akash123 at gmail.com>
> > > > wrote:
> > > >
> > > > > hie friends ,
> > > > >                       i am merging few files in mts and mpg formats
> > > using
> > > > > concat demux
> > > > >
> > > > >         ffmpeg -f concat -i mylist.txt -c copy output
> > > > >
> > > > > but for MTS 720*576 (SD) format ,  at merge point of two files it
> > > adding
> > > > >
> > > > > few frames of next video and few blank frames also causing jerk .
> can
> > > > >
> > > > > nayone help me to solve the problem and remove those frames using
> > > ffmpeg
> > > > >
> > > > > command in above concat demux command.
> > > > >
> > > > > 'else'
> > > > >
> > > > > Can anyone suggest how i can merge all those files without any
> jerk.
> > > > >
> > > > > Hope anyone help me.
> > > > >
> > > > > Thanks in advance
> > > > >
> > > > >
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> > >
> > >
> > >
> > > --
> > > Ajoy A. Devadawson
> > > Email: ajoydawson at gmail.com
> > > Mobile # 1-404-626-6340
> > > Skype: AjoyDawson
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>
>
>
> --
> Ajoy A. Devadawson
> Email: ajoydawson at gmail.com
> Mobile # 1-404-626-6340
> Skype: AjoyDawson
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