Does the one you describe as "grainy" come from the full resolution recording on the SD card inside the Spark? To me it much more looks like the lower resolution one from your mobile device. In addition the two videos are very different in terms of filming conditions. In low light ISO goes up in Auto setting and the higher ISO is, the more grain you'll get (like in good old analog photography). But still the result should be better with the original video on the Spark SD card.
Wachtberger Posted at 2017-12-22 15:27
Does the one you describe as "grainy" come from the full resolution recording on the SD card inside the Spark? To me it much more looks like the lower resolution one from your mobile device. In addition the two videos are very different in terms of filming conditions. In low light ISO goes up in Auto setting and the higher ISO is, the more grain you'll get (like in good old analog photography). But still the result should be better with the original video on the Spark SD card.
I know you said that both are from the SD card, and I am aware of what high ISO grain looks like.... But, it really looks like the first one is just the lower resolution cached video from the phone.
eYeSkYeYe Posted at 2017-12-22 15:44
To better understand what's going on, please educate yourself on exposure. Three key terms: aperture, shutter speed and sensitivity (ISO).
I have other videos indoors, bright lights on. Still grainy. Has been raining past couple of days so I haven't been outside.