On Mon, 13 Jul 2020, Simon wrote:
I think I have determined that as far as ffmpeg is concerned there is no input. I added the flag -color_bars false, which I believe tells ffmpeg not to display color bars in response to lost input. Sure enough, the color bars went away. I interpret this as telling me that there was no signal, as opposed to there being a signal that contained color bars. So now, assuming my logic is sound, my question would be how can ffmpeg detect the connected signal is present (it "knows" which channel is "live") and yet not read the video signal?
Detection of format (resolution, frame rate) is implemented in ffmpeg, but maybe not the detection of pixel format (rgb, or yuv420/422/444). Maybe your HDMI signal is RGB and that is the reason it is detected as no signal... I'd start experimenting with -raw_format rgba and see if it makes a difference.
Regards, Marton _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
