tencentKeTang
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请问gpu加速要加什么参数?
[您好大佬,我已经安装好cuda驱动,并且通过命令的方式执行解码已经可以使用gpu加速。但是配置文件加入参数后,程序下载时报错,麻烦看下是不是参数的原因,谢谢!
方便提供一下配置文件么 On Aug 21, 2021, 4:37 PM +0800, haoxuwang @.***>, wrote:
[您好大佬,我已经安装好cuda驱动,并且通过命令的方式执行解码已经可以使用gpu加速。但是配置文件加入参数后,程序下载时报错,麻烦看下是不是参数的原因,谢谢!
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方便提供一下配置文件么 … On Aug 21, 2021, 4:37 PM +0800, haoxuwang @.***>, wrote: [您好大佬,我已经安装好cuda驱动,并且通过命令的方式执行解码已经可以使用gpu加速。但是配置文件加入参数后,程序下载时报错,麻烦看下是不是参数的原因,谢谢! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.
感谢回复,配置文件已上传附件。 config.zip
你在终端下,gpu加速的完整命令是?应该有-c:v这种参数把 On Aug 22, 2021, 1:37 PM +0800, haoxuwang @.***>, wrote:
方便提供一下配置文件么 … On Aug 21, 2021, 4:37 PM +0800, haoxuwang @.***>, wrote: [您好大佬,我已经安装好cuda驱动,并且通过命令的方式执行解码已经可以使用gpu加速。但是配置文件加入参数后,程序下载时报错,麻烦看下是不是参数的原因,谢谢! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe. 感谢回复,配置文件已上传附件。 config.zip — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.
你在终端下,gpu加速的完整命令是?应该有-c:v这种参数把 … On Aug 22, 2021, 1:37 PM +0800, haoxuwang @.>, wrote: > 方便提供一下配置文件么 > … > On Aug 21, 2021, 4:37 PM +0800, haoxuwang @.>, wrote: [您好大佬,我已经安装好cuda驱动,并且通过命令的方式执行解码已经可以使用gpu加速。但是配置文件加入参数后,程序下载时报错,麻烦看下是不是参数的原因,谢谢! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe. 感谢回复,配置文件已上传附件。 config.zip — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.
ffmpeg -hwaccel cuvid -c:v h264_cuvid -i 0.mp4 -c:v h264_nvenc -y 00.mp4 配置文件的参数改为 -hwaccel cuvid -c:v h264_cuvid,程序还是是报错
params: '-hwaccel cuvid -c:v h264_cuvid -c:v h264_nvenc' 试试看 On Aug 22, 2021, 1:44 PM +0800, haoxuwang @.***>, wrote:
你在终端下,gpu加速的完整命令是?应该有-c:v这种参数把 … On Aug 22, 2021, 1:37 PM +0800, haoxuwang @.>, wrote: > 方便提供一下配置文件么 > … > On Aug 21, 2021, 4:37 PM +0800, haoxuwang @.>, wrote: [您好大佬,我已经安装好cuda驱动,并且通过命令的方式执行解码已经可以使用gpu加速。但是配置文件加入参数后,程序下载时报错,麻烦看下是不是参数的原因,谢谢! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe. 感谢回复,配置文件已上传附件。 config.zip — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe. ffmpeg -hwaccel cuvid -c:v h264_cuvid -i 0.mp4 -c:v h264_nvenc -y 00.mp4 配置文件的参数改为 -hwaccel cuvid -c:v h264_cuvid,程序还是是报错 — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.
params: '-hwaccel cuvid -c:v h264_cuvid -c:v h264_nvenc' 试试看 … On Aug 22, 2021, 1:44 PM +0800, haoxuwang @.***>, wrote: > 你在终端下,gpu加速的完整命令是?应该有-c:v这种参数把 > … > On Aug 22, 2021, 1:37 PM +0800, haoxuwang @.>, wrote: > 方便提供一下配置文件么 > … > On Aug 21, 2021, 4:37 PM +0800, haoxuwang @.>, wrote: [您好大佬,我已经安装好cuda驱动,并且通过命令的方式执行解码已经可以使用gpu加速。但是配置文件加入参数后,程序下载时报错,麻烦看下是不是参数的原因,谢谢! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe. 感谢回复,配置文件已上传附件。 config.zip — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe. ffmpeg -hwaccel cuvid -c:v h264_cuvid -i 0.mp4 -c:v h264_nvenc -y 00.mp4 配置文件的参数改为 -hwaccel cuvid -c:v h264_cuvid,程序还是是报错 — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.
还是报错,报错信息如下,辛苦再帮忙看下!
可能知道原因了,晚点我再看看把,不过很尴尬的是,我可能不是很好测试结果,晚点可能会需要你这边帮忙测试一下 On Aug 22, 2021, 7:09 PM +0800, haoxuwang @.***>, wrote:
params: '-hwaccel cuvid -c:v h264_cuvid -c:v h264_nvenc' 试试看 … On Aug 22, 2021, 1:44 PM +0800, haoxuwang @.***>, wrote: > 你在终端下,gpu加速的完整命令是?应该有-c:v这种参数把 > … > On Aug 22, 2021, 1:37 PM +0800, haoxuwang @.>, wrote: > 方便提供一下配置文件么 > … > On Aug 21, 2021, 4:37 PM +0800, haoxuwang @.>, wrote: [您好大佬,我已经安装好cuda驱动,并且通过命令的方式执行解码已经可以使用gpu加速。但是配置文件加入参数后,程序下载时报错,麻烦看下是不是参数的原因,谢谢! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe. 感谢回复,配置文件已上传附件。 config.zip — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe. ffmpeg -hwaccel cuvid -c:v h264_cuvid -i 0.mp4 -c:v h264_nvenc -y 00.mp4 配置文件的参数改为 -hwaccel cuvid -c:v h264_cuvid,程序还是是报错 — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe. 还是报错,报错信息如下,辛苦再帮忙看下!
— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.
可能知道原因了,晚点我再看看把,不过很尴尬的是,我可能不是很好测试结果,晚点可能会需要你这边帮忙测试一下 … On Aug 22, 2021, 7:09 PM +0800, haoxuwang @.>, wrote: > params: '-hwaccel cuvid -c:v h264_cuvid -c:v h264_nvenc' 试试看 > … > On Aug 22, 2021, 1:44 PM +0800, haoxuwang @.>, wrote: > 你在终端下,gpu加速的完整命令是?应该有-c:v这种参数把 > … > On Aug 22, 2021, 1:37 PM +0800, haoxuwang @.>, wrote: > 方便提供一下配置文件么 > … > On Aug 21, 2021, 4:37 PM +0800, haoxuwang @.>, wrote: [您好大佬,我已经安装好cuda驱动,并且通过命令的方式执行解码已经可以使用gpu加速。但是配置文件加入参数后,程序下载时报错,麻烦看下是不是参数的原因,谢谢! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe. 感谢回复,配置文件已上传附件。 config.zip — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe. ffmpeg -hwaccel cuvid -c:v h264_cuvid -i 0.mp4 -c:v h264_nvenc -y 00.mp4 配置文件的参数改为 -hwaccel cuvid -c:v h264_cuvid,程序还是是报错 — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe. 还是报错,报错信息如下,辛苦再帮忙看下! — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.
非常乐意能配合您测试,等您处理好可以把测试方法回复给我。或者加下微信 d2g4NzAyNTU2OQ==(base64),谢谢!
同样的问题,请问是否有解决
妥协的,我将参数设置为 -c:v h264_cuvid -vcodec h264_nvenc
后可以使用英伟达显卡来做编码,虽然cpu占用依然很高,不过速度明显加快。
一旦加入-hwaccel参数指定硬件加速的话,依然报错。
经典的ffmpeg
新用户问题……这个是传入参数的顺序问题
这个问题以前在压视频的时候出现过,当初摸了好久才找到原因。 如今,一眼就看出来了————
这是一个合并音视频、转换格式、同时启用N卡硬件加速的
ffmpeg
命令:ffmpeg.exe -hwaccel cuvid -hwaccel_output_format cuda -i input.flv -i audio.aac -map 0:v:0 -map 1:a:0 -c:v hevc_nvenc -profile:v main -level 5.1 -qmin 23 -qmax 30 -c:a copy -sn -map_metadata -1 -map_chapters -1 -hide_banner -f mp4 output_x265.mp4
(运行的时候记得把换行符去掉) 实际效果是,几乎不吃CPU。相应的:GPU要跑满的。我的1050显卡_(古老吧?)_的速度压1080P视频一般稳定在300帧左右。
需要注意的是,每一段都有先后顺序的。 其中,启用NVIDIA硬件加速的命令
-hwaccel cuvid -hwaccel_output_format cuda
必须放在输入流-i 输入文件
之前, 视频编码器-c:v hevc_nvenc
、音频编码器-c:a copy
、杂项-sn -map_metadata -1 -map_chapters -1 -hide_banner
都得放在输入流-i 输入文件
之后、-f [格式] 输出文件
之前。 参考: http://ffmpeg.org/ffmpeg.html
如果报这种错误,可想而知是命令行扩展命令的先后顺序不对。
https://github.com/HarryWang29/tencentKeTang/blob/8aec69005f0b2376a82ac93579e985f096a9e043/ffmpeg/mergeAndDownload.go#L11-L14
在这里可以发现,在我们需要的 -hwaccel
等先行指令被送进去之前,-i
已经出现了。指令实际插入位置在 -i 输入文件
之后。所以ffmpeg会爆炸。
改代码的时候注意,不要为了一个
-hwaccel
把-c:v
的进场位置又放到-i
之后了,不然还得报错…… 这-hwaccel
的用法已经和我用的那个已经完全不一样了,支持的选项还根据编译选项而变化,可以跑一下ffmpeg -hwaccels
看看…… 我用的是 https://www.gyan.dev/ffmpeg/builds/#release-builds 下的full版本。 如果你实在不想思考解决方案,可以直接默认-hwaccel auto
加进去完事。(pia~)
可以考虑在config中加一个hwaccel选项,默认的示范配置文件要写auto
,只要选项不为空就把-hwaccel + 输入的内容
放到最前面,完事。当然还要放着某些傻家伙傻乎乎的把-hwaccel
放到-i
后面……
在作者更新代码之前,可以先用 -c:v copy -c:a copy
先缓存下来,然后再单独硬件编码。虽然麻烦了一点,但也比只吃CPU强。
快更新,更新完了喊我一下(
@HarryWang29
谢谢你的解答,这非常有用。
求更新 ^_^
@Janet-Baker 非常感谢给予的ffmpeg参数教程,目前我采用了无脑加如 -hwaccel auto
的方案,此issues一直没解决的主要原因还是手上没有n卡机器,最新的版本中在代码里已配制好 -hwaccel
参数,后续新项目中会优化此出问题