increase video image size

[Roman Arutyunyan]

Hi,

On Thu, Jun 07, 2018 at 12:09:01PM -0400, neuronetv wrote:
> I use ffmpeg to stream a live video from my home to a vps running nginx. The
> video size coming from source (home) is 320x180. Is there any way nginx can
> inflate the video image? Can it be done in the nginx.conf file?

You can set up exec_push with ffmpeg at your incoming application and republish
your stream to another application with any change, including size change.
Something like this should work:

application /src {
    live on;
    exec_push ffmpeg -i rtmp://localhost/src/$name -c:a copy -c:v libx264
                     -s 640x480 -f flv rtmp://localhost/dst/$name;
}

application /dst {
    # proceed here
}

> This is my
> nginx.conf file:
> 
> -----------------------------------------
> worker_processes  1;
> error_log  logs/error.log debug;
> events {
> worker_connections  1024;
> }
> rtmp {
> server {
> listen 1935;
> allow play all;
> 
> #creates our "live" full-resolution HLS videostream from our incoming
> encoder stream and tells where to put the HLS video manifest and video
> fragments
> application live {
> allow play all;
> live on;
> record all;
> record_path /video_recordings;
> record_unique on;
> hls on;
> hls_nested on;
> hls_path /HLS/live;
> hls_fragment 10s;
> 
> }
> 
> #creates our "mobile" lower-resolution HLS videostream from the
> ffmpeg-created stream and tells where to put the HLS video manifest and
> video fragments
> application mobile {
> allow play all;
> live on;
> hls on;
> hls_nested on;
> hls_path /HLS/mobile;
> hls_fragment 10s;
> }
> 
> #allows you to play your recordings of your live streams using a URL like
> "rtmp://my-ip:1935/vod/filename.flv"
> application vod {
> play /video_recordings;
> }
> }
> }
> 
> 
> http {
> include       mime.types;
> default_type  application/octet-stream;
> 
> server {
> listen 90;
> server_name 192.168.254.178;
> 
> #creates the http-location for our full-resolution (desktop) HLS stream -
> "http://my-ip/live/my-stream-key/index.m3u8"      
> location /live {
> types {
> application/vnd.apple.mpegurl m3u8;
> }
> alias /HLS/live;
> add_header Cache-Control no-cache;
> }
> 
> #creates the http-location for our mobile-device HLS stream -
> "http://my-ip/mobile/my-stream-key/index.m3u8"        
> location /mobile {
> types {
> application/vnd.apple.mpegurl m3u8;
> }
> alias /HLS/mobile;
> add_header Cache-Control no-cache;
> }   
> 
> #allows us to see how stats on viewers on our Nginx site using a URL like:
> "http://my-ip/stats"     
> location /stats {
> stub_status;
> }
> 
> #allows us to host some webpages which can show our videos:
> "http://my-ip/my-page.html"     
> location / {
> root   html;
> index  index.html index.htm;
> }   
> }
> }
> --------------------------------------
> 
> I got this nginx.conf file off the internet because it worked in streaming
> video to mobile phones. The videao stream in question is:
> http://198.91.92.112:90/mobile/index.m3u8. If I paste this url into google
> chrome it plays but it's small. Is there any way to modify this url so
> chrome plays a larger image? I know google chrome has a zoom function under
> settings but I'd like to do this with minimal fuss to the viewer. Thanks for
> any help.
> 
> Posted at Nginx Forum: https://forum.nginx.org/read.php?2,280079,280079#msg-280079
> 
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-- 
Roman Arutyunyan