regarding the option --seek

[adrianmak]

i have a video where there is an about 2 mins promotion advertisement before the content of the video. i found a --seek option from online document

here is my command line nvencc64 --seek 1:52 --cqp 22 --audio-copy input_video.mp4 -o output_video.mp4

However I found the audio of output video is not well. There is some sort of delay.

Will the --audio-copy option will all cut/trim the 1:52 before mux to the output video ?

[rigaya]

If you video is 30fps, please try using below (1:52 = 112 sec = 3360 frames).

--trim 3360:0

The last "0" means it will transcode to the end of the video. Please let me know if you still have audio delay.

[adrianmak]

I found that the source video is variable framerate

[rigaya]

Handling of vfr videos are improved on NVEnc 4.30, please try it adding option "--avsync vfr".