Il giorno mar 22 ott 2019 alle ore 22:02 Moritz Barsnick <[email protected]> ha scritto: > > On Tue, Oct 22, 2019 at 14:18:17 +0200, Michele Salerno wrote: > > Hi, i have this command: > > > > ffmpeg -threads 16 -hwaccel nvdec -hwaccel_output_format cuda -i > > input.mp4 -vf scale_cuda=720:480 -c:v h264_nvenc -preset slow > > output.mp4 > > > > and output > > https://pastebin.com/vDL3rLF5?fbclid=IwAR2zk5MbBveBrdp5nhPuSyLhUvdds0VjBgPG3hgpzZhCCcj4C0YZKMs9rRc > > That's so little text, you might as well have posted it here (pastebin > content tends to disappear). Fixing that for you: > Thanks.
> #Originale > Duration: 00:15:27.49, start: 0.000000, bitrate: 965 kb/s > Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, > 830 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default) > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, > fltp, 128 kb/s (default) > > #Convertito > Duration: 00:15:27.48, start: 0.000000, bitrate: 2131 kb/s > Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 720x480 > [SAR 1:1 DAR 3:2], 1999 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default) > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, > fltp, 127 kb/s (default) > > > because the output file is larger than the original? > > I don't use nvenc, but this comment seems in line with your result: > https://superuser.com/a/1369307 > > "My experience with using nvenc is that you need to tell it what > bitrate you want -- it defaults to VBR, which is fine, but no > amount of tuning makes up for the fact that it always wants to give > you a 2M average bitrate no matter what resolution file you feed > it." > > You may want to try some varying encoder options instead. > I have this hw: CPU: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz RAM: Corsair 32Gb VGA: NVIDIA Corporation GK106 [GeForce GTX 660] (rev a1) With cuda... what do you suggest? Thanks. _______________________________________________ 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".
