[FFmpeg-user] FFmpeg connecting to DVB-T system has cropping

[Roger Pack]

What if you just capture to a file, is it cropped? What if you leave
out aspect ratio [shouldn't that be 1:1?]

On 2/2/15, Anubis <anubis at iwwd.com> wrote:
> Hi All,
>
> I'm trying to get a h264 stream setup between a server we use to produce a
> local content channel and our DVB-T2 h264 compatible TV distribution
> system.
> I've got the stream being picked up by the TV system (albeit a bit poor
> quality at this stage) but my main issue is that the picture is being
> cropped, as if it's too large to fit in the screen.
>
> The resolution on the server is 1920x1080 and the stream is setup with the
> following parameters:
>
> ffmpeg ^
>  -f dshow -i video="screen-capture-recorder" ^
>  -f dshow -i audio="Stereo Mix (Realtek High Definition Audio)" ^
>  ^
>  -c:v libx264 ^
>  -tune zerolatency ^
>  -preset:v veryfast ^
>  -x264opts
> bitrate=4000:vbv-maxrate=4000:vbv-bufsize=3000:ratetol=200:vbv-init=200 ^
>  -pix_fmt yuv420p ^
>  -bf 3 ^
>  -b_strategy 1 ^
>  -profile:v high ^
>  -level:v 4.1 ^
>  -r 25.00 ^
>  -g 25 ^
>  -s 1920x1080 ^
>  -aspect 16:9 ^
>  -b:v 4M ^
>  -minrate 4M ^
>  -maxrate 4M ^
>  -bufsize 2M ^
>  ^
>  -c:a libmp3lame ^
>  -b:a 256k^
>  -ar 44100 ^
>  -ac 2^
>  -threads 0 ^
>  -streamid 0:430 ^
>  -streamid 1:446 ^
>  ^
>  -f mpegts ^
>  udp://224.2.2.70:5000?localaddr=192.168.5.70^&pkt_size=1316
>
>
> Is there something that I've misconfigured which would make the picture
> seem
> cropped or zoomed in?  I've checked on a number of different TV's but all
> display the same.
>
> Also, I need to try and keep the channel to a max of 4Mbps; are the
> settings
> I have here the best quality I could get out of the picture while keeping
> within 4Mbps?
>
>
> Thanks
> Anubis.
>
>
>
>
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