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Search - "video encoding"
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I am sick of misrotated videos.
Sometimes, the phone camera software saves a video vertically because the user hits "record" before the software has detected that the user is holding the smartphone horizontally, because the software stupidly launches in vertical orientation by default.
So the software wants the user to wait until it has finally detected horizontal orientation, which causes the user to miss out on a moment.
How about the camera software actually saves the video in the orientation it was recorded in for the most time, rather than only the beginning of the video?
If I can think of this idea, billion-dollar companies surely can.
In the meantime, misrotated videos can be fixed using this ffmpeg command on Linux or Windows:
ffmpeg -i input_file.mp4 -metadata:s:v rotate="0" -c copy output_file.mp4
And if the phone was held with the home button to the left side:
ffmpeg -i input_file.mp4 -metadata:s:v rotate="180" -c copy output_file.mp4
This solution is superior compared to using -vf (video filters) because it only touches the metadata of the video. No re-encoding. This means no quality loss and no CPU/GPU power needed to process the video again. It just passes through.10 -
Hardly anything in tech aged better than H.264.
The H.264 video format, also known as AVC (Advanced Video Coding), was made in the 2000s, is still widely in use in the 2020s, and only slowly being usurped by H.265, which was made in 2013.6 -
120fps and 240fps filming isn't just for slow motion playback, but recent smartphones have 120 Hz screens so those videos can finally be watched as ultra-smooth motion with audio.
If only all smartphones encoded high-framerate videos in real-time with the same framerate recorded from the image sensor instead of stupidly slowing down when encoding.
Granted, this is a thing Apple has always done right: they encoded their "slow motion" videos in real-time and let the user select the slowed-down portions during playback!
Let the user set their preferred playback speed in the video editor, don't dictate that 1× playback speed is 1/4 of real-life speed. 1× playback speed must be 1× real-life speed to clear up all confusion.
Besides, laptops with 120 Hz screens existed as early as 2011 (Samsung 700G7A)!. -
Is there any program that can be used to cut out parts of a video file without re-encoding.
The way I'm thinking is if you already have a video file, you should be able to just copy the data from 1 file to another like a file splitter.3 -
Finally got around to some real video encoding work on my new computer but noticing it's not blazing fast...
And more work is still handled by the CPU... But I thought video processing is handled by the GPU, which seems to be barely used at all. I'm using Handbrake but I thought the whole point of dedicated GPU was for intensive graphics and video processing?6