[FFmpeg-user] A question on -tag:v and CPU usage

Dennis Mungai dmngaie at gmail.com
Wed Oct 30 04:26:29 EET 2019

Hello there,

What impact, if any, does the ffmpeg option -tag:v, when explicitly set,
have on CPU usage?
Does it write the video codec tag per frame, etc?
I ask because I'm seeing some truly abnormal results with hevc_nvenc when
the -tag:v hvc1 option is passed where the CPU load spikes up significantly.

Warm regards,


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