On 14/10/16 13:47, tyt xtreme wrote:
Hi,
I already post my mail to ffmpeg-users group regarding this issue but no
one could help me out and advised to ask more experienced users. So i hope
you can tell me something and sorry posting here.
Here is my re-encoding command's output (Windows 8.1 with Bash):
*$ ffmpeg -i perspective.mp4 -c:v h264_nvenc -profile:v high -preset:v fast
perspective_out.mp4*
Thanks for the pictures. Could you also provide a piece of the original video
file?
Also, please stay on the ffmpeg-user list. ffmpeg-devel is primarily for
development of ffmpeg, where people send in patches and discuss implementation
details. We still need to figure out if your problem can be reproduced and where
it originates from before we can conclude anything (i.e. if its a user error or
a software error).
Cheers
ffmpeg version N-81960-g1bda0ee Copyright (c) 2000-2016 the FFmpeg
developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth
--enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
--enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264
--enable-libopenjpeg --enable-libopus --enable-librtmp
--enable-libschroedinger --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
--enable-lzma --enable-decklink --enable-zlib
libavutil 55. 32.100 / 55. 32.100
libavcodec 57. 61.100 / 57. 61.100
libavformat 57. 51.103 / 57. 51.103
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 63.100 / 6. 63.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 2.100 / 2. 2.100
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'perspective.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.50.100
Duration: 00:07:27.87, start: 2.132000, bitrate: 10235 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 /
0x31637661), yuv420p(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 10233 kb/s,
24.94 fps, 29.97 tbr, 1000k tbn, 2000k tbc (default)
Metadata:
handler_name : VideoHandler
File 'perspective_out.mp4' already exists. Overwrite ? [y/N] y
Output #0, mp4, to 'perspective_out.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.51.103
Stream #0:0(eng): Video: h264 (h264_nvenc) (High) ([33][0][0][0] /
0x0021), yuv420p, 3840x2160 [SAR 1:1 DAR 16:9], q=-1--1, 2000 kb/s, 29.97
fps, 30k tbn, 29.97 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc57.61.100 h264_nvenc
Side data:
cpb: bitrate max/min/avg: 0/0/2000000 buffer size: 4000000 vbv_delay:
-1
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_nvenc))
Press [q] to stop, [?] for help
Past duration 0.731316 too large 8815kB time=00:00:27.22
bitrate=2652.4kbits/s dup=206 drop=0 speed=3.95x
The output is far away from optimal. It's kind of green,red colored &
ghosty. Attached - resized - image samples about the original and output
frames. Any idea why encoder doing this? I'm using GeForce GTX 980 Ti 6Gb
GPU.
Thanks!
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