So I started to google around to see how I could get better results.īut except for a few posts here and there, I'm mostly coming up blank. The only setting that seems to work is the video bit rate (-b:v). Then I noticed that changing the crf or the preset makes no difference, ffmpeg seems to ignore those settings. The conversion speeds increased from 0.75x to 4x, almost a 500% improvement !īut then I noticed large filesizes and slightly fuzzy results. I'm using this command: ffmpeg -i input_h264.mp4 -c:v hevc_videotoolbox -b:v 6000K -c:a copy -crf 19 -preset veryslow output_h265.mp4 My Mac hardware is the 10th generation Intel i5 with AMD Radeon Pro 5300
I noticed that if I typed NVRipaddress:80/ISAPI/Streaming/channels/102 into Opera, it showed XML which stated the stream was h.265 so maybe the tag is present in the RTSP stream also.I'm using ffmpeg 4.3.1 to convert videos from h264 to h265 and initially I was excited to discover that I can use my Mac's GPU to speed up the conversion with the flag hevc_videotoolbox. Or is this like h.264, where it initially wasn’t supported by browsers, then eventually was? With this level, I cannot visually tell the difference in. I tried a few different quality settings before settling on the default -crf 28. ffmpeg -i input.mp4 -vcodec libx265 -crf 28 output.mp4.
Is there some way to programmatically tell if the stream is renderable? It would be beneficial if HA stopped playback altogether with an “unsupported encoding” message or similar. It’s pretty easy to compress these videos using the ffmpeg command line tool with something like the command below. It is very fast software that will take minimal time to convert video while high quality is guaranteed after conversion. Checking, it isn’t supported in most browsers, and likely won’t be anytime soon, due to licensing issues. x265 from VideoLAN is a free software library and application for encoding video streams into the H.265/MPEG-H HEVC compression format, and is released under the terms of the GNU GPL. Shutter Encoder makes use of FFmpeg to handle its encoding, allowing support for almost.
The speed difference between my quad-core Intel i7 4850HQ 15 MacBook Pro and my 8-core Exynos 7885 Samsung phone was an astounding 1000 4-core Intel i7 4850HQ: 3.3 fps 45 Watts. Just a note as I fumble with getting another Hikvision NVR to play nice with HA…the live streams can be pulled up fine on Android 11 (didn’t at first, had to try opening them several times before it suddenly started working.) But in HA/Opera/Windows 10, I just get a flickering panel which barely reads “Error with media stream contents…” I take it that h.265 isn’t supported in Opera. Although FFMPEG support NVENC, but just not by default, and you have to compile it yourself. As I mentioned, I did the FFmpeg H.265 software encoding comparison between ARM and x86.
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