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How to increase video speed and frame rate without duplicating frames

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6

2

I have a long video with a frame rate of 30 FPS that I want to convert into a 200x time-lapse with a frame rate of 60 FPS. My only problem is that avconv is unnecessarily duplicating every other frame in the output, making the 60 FPS output effectively 30 FPS. I want every frame to be unique. At a 200x speed increase and 2x frame rate increase, there is no reason to duplicate frames.

For example, the problem is that the output is using source frames like 1,1,21,21,41,41,... when I want it to use frames 1,11,21,31,41,51,...

Here's the command I'm using:

avconv -i input_30fps.avi -vcodec h264 -an -r 60 -vf "setpts=(1/200)*PTS" output_200x_60fps.avi

video ffmpeg libav framerate

share|improve this question

edited Jul 18 '16 at 22:40

Pilot_51

asked Jul 18 '16 at 20:07

Pilot_51Pilot_51

17118

add a comment | 

6

2

I have a long video with a frame rate of 30 FPS that I want to convert into a 200x time-lapse with a frame rate of 60 FPS. My only problem is that avconv is unnecessarily duplicating every other frame in the output, making the 60 FPS output effectively 30 FPS. I want every frame to be unique. At a 200x speed increase and 2x frame rate increase, there is no reason to duplicate frames.

For example, the problem is that the output is using source frames like 1,1,21,21,41,41,... when I want it to use frames 1,11,21,31,41,51,...

Here's the command I'm using:

avconv -i input_30fps.avi -vcodec h264 -an -r 60 -vf "setpts=(1/200)*PTS" output_200x_60fps.avi

video ffmpeg libav framerate

share|improve this question

edited Jul 18 '16 at 22:40

Pilot_51

asked Jul 18 '16 at 20:07

Pilot_51Pilot_51

17118

add a comment | 

I have a long video with a frame rate of 30 FPS that I want to convert into a 200x time-lapse with a frame rate of 60 FPS. My only problem is that avconv is unnecessarily duplicating every other frame in the output, making the 60 FPS output effectively 30 FPS. I want every frame to be unique. At a 200x speed increase and 2x frame rate increase, there is no reason to duplicate frames.

For example, the problem is that the output is using source frames like 1,1,21,21,41,41,... when I want it to use frames 1,11,21,31,41,51,...

Here's the command I'm using:

avconv -i input_30fps.avi -vcodec h264 -an -r 60 -vf "setpts=(1/200)*PTS" output_200x_60fps.avi

video ffmpeg libav framerate

share|improve this question

edited Jul 18 '16 at 22:40

Pilot_51

asked Jul 18 '16 at 20:07

Pilot_51Pilot_51

17118

avconv -i input_30fps.avi -vcodec h264 -an -r 60 -vf "setpts=(1/200)*PTS" output_200x_60fps.avi

share|improve this question

edited Jul 18 '16 at 22:40

Pilot_51

asked Jul 18 '16 at 20:07

Pilot_51Pilot_51

17118

share|improve this question

edited Jul 18 '16 at 22:40

Pilot_51

asked Jul 18 '16 at 20:07

Pilot_51Pilot_51

17118

asked Jul 18 '16 at 20:07

Pilot_51Pilot_51

17118

asked Jul 18 '16 at 20:07

Pilot_51Pilot_51

17118

2 Answers
2

active

oldest

votes

4

As happens regularly to me, after spending hours trying to figure it out before asking for help, I find the solution myself just minutes after asking.

It turns out avconv isn't the better replacement to ffmpeg that I thought it was when Linux Mint, IIRC, removed ffmpeg from the official repository in favor of avconv. Anyway, ffmpeg is back and I installed it and found the equivalent command that doesn't duplicate frames:

ffmpeg -i input_30fps.avi -vcodec h264 -an -vf "fps=60, setpts=(1/200)*PTS" output_200x_60fps.avi

share|improve this answer

edited Jul 18 '16 at 22:01

answered Jul 18 '16 at 21:00

Pilot_51Pilot_51

17118

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  ffmpeg -r 6000 -i in_30.avi -c:v h264 -an -r 60 out.avi should do the same thing.
  
  – Gyan
  Jul 19 '16 at 5:11
  

  
  
  
  

add a comment | 

0

Yes, the reason it did not work is that the command you used is NOT designed to speed up playback, but to increase the definition of the video.

share|improve this answer

answered Jan 16 '17 at 19:01

the_try_guythe_try_guy

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is really a comment and not an answer to the original question. You can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post. Please read Why do I need 50 reputation to comment? What can I do instead?
  
  – DavidPostill♦
  Jan 16 '17 at 23:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  In any case, the command OP used does not "increase the definition" of the video.
  
  – Gyan
  Jan 17 '17 at 4:52
  

  
  
  
  

add a comment | 

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4

As happens regularly to me, after spending hours trying to figure it out before asking for help, I find the solution myself just minutes after asking.

It turns out avconv isn't the better replacement to ffmpeg that I thought it was when Linux Mint, IIRC, removed ffmpeg from the official repository in favor of avconv. Anyway, ffmpeg is back and I installed it and found the equivalent command that doesn't duplicate frames:

ffmpeg -i input_30fps.avi -vcodec h264 -an -vf "fps=60, setpts=(1/200)*PTS" output_200x_60fps.avi

share|improve this answer

edited Jul 18 '16 at 22:01

answered Jul 18 '16 at 21:00

Pilot_51Pilot_51

17118

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  ffmpeg -r 6000 -i in_30.avi -c:v h264 -an -r 60 out.avi should do the same thing.
  
  – Gyan
  Jul 19 '16 at 5:11
  

  
  
  
  

add a comment | 

4

As happens regularly to me, after spending hours trying to figure it out before asking for help, I find the solution myself just minutes after asking.

It turns out avconv isn't the better replacement to ffmpeg that I thought it was when Linux Mint, IIRC, removed ffmpeg from the official repository in favor of avconv. Anyway, ffmpeg is back and I installed it and found the equivalent command that doesn't duplicate frames:

ffmpeg -i input_30fps.avi -vcodec h264 -an -vf "fps=60, setpts=(1/200)*PTS" output_200x_60fps.avi

share|improve this answer

edited Jul 18 '16 at 22:01

answered Jul 18 '16 at 21:00

Pilot_51Pilot_51

17118

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  ffmpeg -r 6000 -i in_30.avi -c:v h264 -an -r 60 out.avi should do the same thing.
  
  – Gyan
  Jul 19 '16 at 5:11
  

  
  
  
  

add a comment | 

As happens regularly to me, after spending hours trying to figure it out before asking for help, I find the solution myself just minutes after asking.

It turns out avconv isn't the better replacement to ffmpeg that I thought it was when Linux Mint, IIRC, removed ffmpeg from the official repository in favor of avconv. Anyway, ffmpeg is back and I installed it and found the equivalent command that doesn't duplicate frames:

ffmpeg -i input_30fps.avi -vcodec h264 -an -vf "fps=60, setpts=(1/200)*PTS" output_200x_60fps.avi

share|improve this answer

edited Jul 18 '16 at 22:01

answered Jul 18 '16 at 21:00

Pilot_51Pilot_51

17118

ffmpeg -i input_30fps.avi -vcodec h264 -an -vf "fps=60, setpts=(1/200)*PTS" output_200x_60fps.avi

share|improve this answer

edited Jul 18 '16 at 22:01

answered Jul 18 '16 at 21:00

Pilot_51Pilot_51

17118

answered Jul 18 '16 at 21:00

Pilot_51Pilot_51

17118

answered Jul 18 '16 at 21:00

Pilot_51Pilot_51

17118

0

Yes, the reason it did not work is that the command you used is NOT designed to speed up playback, but to increase the definition of the video.

share|improve this answer

answered Jan 16 '17 at 19:01

the_try_guythe_try_guy

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is really a comment and not an answer to the original question. You can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post. Please read Why do I need 50 reputation to comment? What can I do instead?
  
  – DavidPostill♦
  Jan 16 '17 at 23:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  In any case, the command OP used does not "increase the definition" of the video.
  
  – Gyan
  Jan 17 '17 at 4:52
  

  
  
  
  

add a comment | 

0

Yes, the reason it did not work is that the command you used is NOT designed to speed up playback, but to increase the definition of the video.

share|improve this answer

answered Jan 16 '17 at 19:01

the_try_guythe_try_guy

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is really a comment and not an answer to the original question. You can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post. Please read Why do I need 50 reputation to comment? What can I do instead?
  
  – DavidPostill♦
  Jan 16 '17 at 23:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  In any case, the command OP used does not "increase the definition" of the video.
  
  – Gyan
  Jan 17 '17 at 4:52
  

  
  
  
  

add a comment | 

Yes, the reason it did not work is that the command you used is NOT designed to speed up playback, but to increase the definition of the video.

share|improve this answer

answered Jan 16 '17 at 19:01

the_try_guythe_try_guy

1

share|improve this answer

answered Jan 16 '17 at 19:01

the_try_guythe_try_guy

1

answered Jan 16 '17 at 19:01

the_try_guythe_try_guy

1

answered Jan 16 '17 at 19:01

the_try_guythe_try_guy

1