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[英]How do i Convert an MP4 (H264,AAC) to WebM with zero quality loss using FFMPEG?
[英]Live streaming .webm file with ffmpeg and nginx
嗨,我是ffmpeg
新手,我需要一些有關.webm
文件的實時流式傳輸的幫助。 我有一個.webm
文件只包含vp9編解碼器which needs to be live streamed (preferably without transcoding and streamed using
視頻which needs to be live streamed (preferably without transcoding and streamed using
DASH which needs to be live streamed (preferably without transcoding and streamed using
。)我已經編譯了nginx和nginx-ts-module來自( https://github.com/arut / nginx-ts-module#features )具有以下配置
nginx version: nginx/1.12.1
built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
built with OpenSSL 1.0.1f 6 Jan 2014
TLS SNI support enabled
configure arguments: --with-cc-opt='-g -O2 -fPIE -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -fPIC -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -fPIE -pie -Wl,-z,relro -Wl,-z,now -fPIC' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --modules-path=/usr/lib/nginx/modules --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_v2_module --with-http_dav_module --with-http_slice_module --with-threads --with-http_addition_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_sub_module --with-stream=dynamic --with-stream_ssl_module --with-stream_ssl_preread_module --with-mail=dynamic --with-mail_ssl_module --add-dynamic-module=/home/ubuntu/NGINX/nginx-ts-module-master
mediafile具有以下屬性(使用mediainfo獲取):
General
Complete name : video_4_1_Admin_0.webm
Format : WebM
Format version : Version 2
File size : 19.7 MiB
Duration : 1ms
Overall bit rate : 165 Gbps
Writing library : libwebm-0.2.1.0
Video
ID : 1
Format : VP9
Codec ID : V_VP9
Width : 320 pixels
Height : 180 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Language : English
Default : Yes
Forced : No
我正在嘗試使用以下內容流式傳輸文件
ffmpeg -re -i video_4_1_Admin_0.webm -bsf:v vp9_superframe -c copy -f webm_chunk http://127.0.0.1:8000/publish/sintel
我收到以下錯誤
Input #0, matroska,webm, from 'video_4_1_Admin_0.webm':
Metadata:
encoder : libwebm-0.2.1.0
Duration: 00:00:00.00, start: 0.000000, bitrate: 174444152 kb/s
Stream #0:0(eng): Video: vp9 (Profile 0), yuv420p(tv), 320x180, SAR 1:1 DAR 16:9, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
Output #0, webm_chunk, to 'http://127.0.0.1:8000/publish/sintel':
Output file #0 does not contain any stream
我不確定傳遞給ffmpeg
的確切選項是什么,以便它創建.mpd
和所需的塊,這將允許我LiveStream媒體,我嘗試替換示例中給出的選項( https://github.com / arut / nginx-ts-module#features )與vp9
相當的東西。但是,我不確定。 有人可以幫幫我嗎? 提前致謝
WebM不是MPEG-TS。
Nginx不適合您的用例。 您可以使用Icecast代替。
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