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Questions tagged [framerate]

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9
votes
2answers
7k views

Does raising the framerate while not changing the bitrate result in quality loss?

AFAIK, the bitrate is the number of bits per second. So let's say I have two videos, both using the same codec, bitrate settings and resolution. If the first one has a framerate of 25fps, but the ...
1
vote
1answer
44 views

A Sony Pro camera's spec shows it shots in 29.97fps, does it really mean it?

According to this ffmpeg documentation, it seems one of the 'native' frame rate for ffmpeg is 'ntsc': 30000/1001 while 30000/1001=29.9700... does not equal to 29.97, I wonder if a Sony Pro ...
6
votes
2answers
2k views

Handling Frame Rate for Movies with Slow Motion

I know that 24fps is the standard rate for movies. Presumably, if I want to shoot for a movie I should shoot at 24fps, however if I want to add slow motion effects in the movie I know that I need to ...
5
votes
2answers
928 views

Are the properties (bitrate, fps) of my h.264 video OK for the web?

I'm converting a Flash vector animation to an mp4 video for the web. After trying and failing with Swiffy, it's the only way I have of preserving the work "for posterity", once Flash is gone. When ...
2
votes
1answer
973 views

How to use ffmpeg to fade in/out a veriable frame rate video clip with unknown duration

I have been looking for a way to use ffmpeg to downscale some MPEG-4 (Base Media / Version 2) video files recorded with a variable frame rate, adding fade in/out effects at the head and tail of each ...
2
votes
1answer
223 views

Is this video 50p or 25p?

I have some footage shot with a Lumix DMC-FZ38 with the video format set to AVCHD and the SH (super high?) quality setting. The manual says: [AVCHD Lite] (With audio) When set to [SH]: ...
1
vote
1answer
766 views

Wrong frame-rate, corrupted playback of isom/mp4 files remuxed from H.264/AC3 MPEG-TS

NOTE: This question is superceded by this new one, please do not answer below this post. What happened? [Edit] DVB file ('file1') in TS format of H.264/AC3@50i cannot be properly remuxed into any ...
0
votes
1answer
718 views

Lower framerate without re-encode

I'm looking for a way to lower the framerate of an H264 mp4 video without re-encoding the video. Example: I have a 30 FPS input file and I need it to be 5 FPS. I want to avoid re-encoding because of ...