2016-09-15 15:14 GMT+02:00 stigma <[email protected]>: > I'm trying to put the same range of colors that sdl uses. > > When I put this code on ffmpeg, I can capture my PCI TV card with > an preview to see what happens, and I notice that hte sdl preview has > a range of 16-235 instead of 0-255 that the output puts. Here's the > code that I'm using and an screenshot: > > Code: > ffmpeg -framerate 29.97 -vsync 1 -video_size 720x480 -f dshow > -rtbufsize 250000k -crossbar_video_input_pin_number 1 -i > video="713x BDA Analog Capture":audio="Line (VIA High Definition Audio" > -t 1:16:00 -vf "yadif=0:0:1,format=rgb24" -c:v libx264 -preset medium > -crf 15 -maxrate 1800k -bufsize 3500k -preset medium -c:a aac -b:a 192k > -strict -2 -r 29.97 "ttt.mp4" -c:v copy -an -f sdl "VHS"
Complete, uncut console output missing. I suspect -framerate 30000/1001 should improve the timing of the output video. Are you sure that the video you are recording is not telecined but interlaced? It is a very bad idea to put telecined video through the yadif filter, there are several inverse telecine filters... Why are you using "format=rgb24"? The libx264 encoder does not support rgb24, so afaict, you are starting several colour space conversions (that can affect video quality), just avoid any format option. The option "-strict -2" should not be necessary anymore: The native aac encoder was declared stable. You write video to an mp4 file with libx264 video. This video definitely uses limited range (16-235) unless you force the x264 encoder to use full range (which is incompatible with most playback software). Since you are using -vcodec copy for the sdl output, the range cannot be adjusted. (I do not know if sdl 1 supports setting the range but the output device doesn't do it afaics.) Imo, the important question is: Does the dshow input use the correct colourspace? You could test with: $ ffmpeg -f dshow -i ... -vcodec copy -f rawivdeo -vframes 1 out and see if what the range inside the output file is and which pix_fmt is shown on the console. Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
