New answers tagged codec
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Just to add a little detail to t @tomh's excelent answer: a 1920×1080 image comprises 2,073,600 pixels. To capture this in a way that includes all the visual information that you could see with your naked eye would require at least 14 stops of dynamic range, which translates to 3 channels of 14-bit colour (the three channels are the RGB components, or more ...
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A bit old one but Google still lists it...
You can of course use RTSP "push" similar way as you'd do via FLV/RTMP. A bit less known method but also viable and supports H.265 (aka HEVC).
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If you imagine you have a video signal, and you want to capture all of it.. Let's say it is 1920x1080 at 25fps. You can store all the information about every pixel at full colour depth on every frame. This would be lossless - you could full recreate the signal upon playback, and it would be identical to the original that you captured.
The downside of this ...
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@Gyan is correct. add
-pix_fmt yuv420p
I was in the exact situation @MatrixManAtYrService described and the video imported into Camtasia Studio correctly after converting with -pix_fmt yuv420p
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