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This command preserved the colorspace and also video didnt get darker after transcoding ffmpeg -i input.mp4 -color_primaries smpte170m -color_trc smpte170m -colorspace smpte170m -r 25 -crf 18 output.mp4 source: https://kdenlive.org/en/project/color-hell-ffmpeg-transcoding-and-preserving-bt-601/ more about colorspace: https://trac.ffmpeg.org/wiki/colorspace


2

The VMAF models are actually trained by humans who rated the quality on a 1-5 point scale, watching the movie either on an 1080p screen from 3x screen height away, or on a 4k screen from 1.5x screen height away. This rating is mapped to VMAF scores 0, 20, 40, 60, and 80, while 100 is when they compare the source video to itself. Your score of 94.240835 is ...


1

You have control over this. If you use the correct settings, you will work on the original file. When you setup a project you can define what Ingest Settings to use during import. Those settings can also be changed later. In your case you probably want to use Copy. If you drag and drop a video from the Media Browser panel to the Project panel the video will ...


1

Audacity would grab the digital data for recording in this case and since it uses a lossless format for recording you would not lose any information. I don't know about OBS but it would be surprising if they do things differently. There will be a very slight loss of quality with 320 kbps mp3s. I doubt any human would hear a difference, though. This may ...


1

Yes, method 2 is suitable. Add something like enable=0


1

Depending on what shell you're using you can suspend a process (in posix shells it's with ctrlz, in Powershell you might use suspend-Job) and then resume it. This is true for any shell with job control. You can't quit and save the state from ffmpeg though. A workaround would be to run the ffmpeg process in a virtual machine. Most linux distros have a minimal ...


1

ProRes/CineForm/DNxHR caught on because of the platforms which decided to use them. Initially, H.264 didn't have 10-bit implementations and H.265 didn't exist. Those formats are made to hold up to being re-encoded while being very fast to encode/decode. They're not painstakingly tweaked for the best possible quality at a given bitrate. Several cameras can ...


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