[FFmpeg-user] Improvement the quality of H264 video signal with low bit rate

Đặng Đức Hưng ddhung at vasc.com.vn
Mon Apr 22 03:32:24 CEST 2013

Dear All.


I transcoded the IP input video which is UDP and multicast stream to other output with low bit rate. I found that the quality of video output is very bad. The image is foggy and blured when active scene. The below is the code I am using. Can you give me some advice to improve video ouput.

Thank you so much.


C:/ffmpeg_32/bin/ffmpeg -i udp:// -filter:v yadif=0:-1:1,fps=25 -vcodec libx264 -g 16 -vprofile main -level 30 -b:v 1000k -minrate 950k -maxrate 1050k -bufsize 100k -s: 720x576 -r 25 -ac 2 -ar 48000 -b:a 128k -filter:a volume=2 -f mpegts -muxrate 1200k udp://


Best Regards

Đặng Đức Hưng

| Broadcast Technical Department | IPTV Center | VASC Software and Media Company |

| 33 Thai Ha Street | Đống Đa District | Hanoi | Vietnam|

| Tel (+84) 37722728 ext 681/684 | Mobile (+84) 915 070 921| 

|  <mailto:ddhung at vasc.com.vn> ddhung at vasc.com.vn |  <http://www.mytv.com.vn/> www.mytv.com.vn |


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