(Did this one not top post? Trying to figure out how to avoid that on Gmail)
Thanks for the advice. Now I guess I should encode a video using double pass and CFR and compare them. There seems to be a hot debate about which is best. The settings below are what the apple.com recommends for 4:3. Forgive my slowness but I'm having a tough time converting what sites recommend into ffmpeg commands. Now especially double pass and CFR. >From the wiki page on encoding for streaming they show this example https://trac.ffmpeg.org/wiki/EncodingForStreamingSites ffmpeg -i input.mkv -vcodec libx264 -preset medium -maxrate 3000k -bufsize 6000k \ -vf "scale=1280:-1,format=yuv420p" -g 50 -acodec libmp3lame -b:a 128k -ac 2 -ar 44100 file.flv so is this how I should change it? attempting the highest and lowest ffmpeg -i input.mp4 -vcodec libx264 -preset medium -maxrate 264k -bufsize 500k \ -vf "scale=400:-1,format=yuv420p" -g 50 -acodec aac -b:a 64k -ac 2 -ar 48000 output_400.mp4 ffmpeg -i input.mp4 -vcodec libx264 -preset medium -maxrate 5120k -bufsize 10000k \ -vf "scale=1280:-1,format=yuv420p" -g 50 -acodec aac -b:a 128k -ac 2 -ar 48000 output_1280.mp4 I'm totally guessing on -bufsize by doubling the -maxrate. What should it actually be? Also on the scale, what's the difference between -1 and -2? Since the -g = 50 does this mean my keyframes will be aligned 5 seconds apart? 400x300 Frame Rate = 12 Total Bit Rate = 264 Video Bit Rate = 200 Audio Bit Rate = 64 Audio Sample Rate = 48 Keyframe = 36 Profile = Baseline, 3.0 B-frames = 0 Segment Size = 9 480x360 Frame Rate = 15 Total Bit Rate = 464 Video Bit Rate = 400 Audio Bit Rate = 64 Audio Sample Rate = 48 Keyframe = 45 Profile = Baseline, 3.0 B-frames = 0 Segment Size = 9 640x480 Frame Rate = 29.97 Total Bit Rate = 664 Video Bit Rate = 600 Audio Bit Rate = 64 Audio Sample Rate = 48 Keyframe = 90 Profile = Baseline, 3.0 B-frames = 0 Segment Size = 9 640x480 Frame Rate = 29.97 Total Bit Rate = 1296 Video Bit Rate = 1200 Audio Bit Rate = 96 Audio Sample Rate = 48 Keyframe = 90 Profile = Baseline, 3.1 B-frames = 0 Segment Size = 9 960x720 Frame Rate = 29.97 Total Bit Rate = 3596 Video Bit Rate = 3500 Audio Bit Rate = 96 Audio Sample Rate = 48 Keyframe = 90 Profile = Main, 3.1 B-frames = as needed Segment Size = 9 1280x960 Frame Rate = 29.97 Total Bit Rate = 5128 Video Bit Rate = 5000 Audio Bit Rate = 128 Audio Sample Rate = 48 Keyframe = 90 Profile = Main, 3.1 B-frames = as needed Segment Size = 9 _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
