There are a lot of answers about h264_nvenc settings. But I didn’t find code examples for tuning NVENC HEVC lossy encoding settings on latest GPU, for example on Tesla T4. These are my current setings. It seems to me that some of these commands do not do anything. Useful for h.264 -b_ref_mode:v middle doesn’t work … Read more
I found some example codes on the internet and built a program to encode a live feed from a webcam or yuv file using h265. I used the libx265 for this with ffmpeg. Now i want to mux an aac file with the produced h265 file and make a mp4. Can anyone suggest me a … Read more
I use a 10bit build of ffmpeg/x265 to run the following command where I decode an input x265/10bit video, pipe it into another cmd line tools and pipe again the output into a new ffmpeg instance where I want to re-encode and fragment with a 3second fragment duration. Note that the same line worked as … Read more
I have an input video file input.avi as produced by a digital camera $ avprobe input.avi avprobe version 11.7-6:11.7-1~deb8u1, Copyright (c) 2007-2016 the Libav developers built on Jun 12 2016 21:51:35 with gcc 4.9.2 (Debian 4.9.2-10) Input #0, avi, from ‘input.avi’: Metadata: creation_time : 2016-08-04 19:42:38 encoder : CanonMVI06 Duration: 00:00:21.60, start: 0.000000, bitrate: 17170 … Read more
I am unable to play an H265 Video on Windows Server 2012 Datacenter OS. The main reason – Win2012 Server does not know about the h265 video codecs. So decoder unavailable, due to this, it can’t play. *Without installing any third-party codecs, how do I configure Win2012 Server OS to play H265 codecs? Does Win2016 … Read more
Similar to Reinterpret AVC bitstream as HEVC. Some hardware codecs support 4:2:0 for 4k but not don’t support 4:2:2 even for SD, with far less data. Can you trick a codec to encode 1920×1080 4:2:2 by feeding it 1920×2160 4:2:0? Answer No, you can’t trick it because the chroma planes are different resolution. 4:2:2 has … Read more
I am trying to split with ffmpeg a bitstream whose extension is .hevc which is generated by the platform HM 16.11 in several segments according to the GOP I want to have several files whose extension is .hevc each file contains a single GOP i found this command line ‘segmentmuxer’ but there is the extension … Read more
on Linux i am trying to encode file to H€VC using hardware acceleration. Successful attempt is: ffmpeg -v verbose -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -i ‘/path/file.mkv’ -vcodec libx265 -crf 28 ‘/path/file.mp4’ but it is slow like 30fps, “ffmpeg -codecs|grep 265” shows: (encoders: libx265 nvenc_hevc hevc_amf hevc_nvenc hevc_qsv hevc_v4l2m2m hevc_vaapi ) so i have tried hevc_vaapi: ffmpeg … Read more
I am trying to convert a DVD that I own into mp4/lib265 format. To test the quality out I am only converting the first two minutes of the input video (which is a concatenated vob file). The source video is not particularly high resolution being a DVD it is 720×480 I tried 8/10/12 bit hevc … Read more
I have tried DivX converter for H.265. How does DivX converter estimate the bitrate value for H.265 output file? Is it such algorithm that e.g. when the original file size has 60 Mbit/s bitrate, then the bitrate estimation for the output file is half of this value so 30 Mbit/s? I have tested DivX converter … Read more
