[FFmpeg-user] Latency in UDP to HLS Conversion

KRISHNAKUMAR N K nk.krishnakumar at gmail.com
Fri Aug 21 05:57:28 EEST 2020


Hi Moritz

Thanks for your reply. I have uploaded the complete, uncut console output
to the below google drive. I didn't observe latency with one output. I
haven't tried a test without the yadif filter.

https://drive.google.com/file/d/1g9KHOV41BmwEA0X-Urjao7jSQpOmGhfS/view?usp=sharing

>From the above logs, I can see "Circular buffer overrun. Surviving due to
overrun_nonfatal option" for the first time. I have started a new test with
increasing the fifo_size and without the yadif filter. Please go through
the above log file and let me know your observation. Thanks in Advance.

Regards

*KrishnaKumar **N K*

On Thu, 20 Aug 2020 at 17:39, Moritz Barsnick <barsnick at gmx.net> wrote:

> On Wed, Aug 19, 2020 at 18:57:09 +0530, KRISHNAKUMAR N K wrote:
> > Hi Guys
> >
> > I am converting UDP Input to Live HLS output and pushing the chunks to a
> > webdav server. Initial playback works fine, but the playback was delayed
> by
> > almost an hour, when we checked after 15 hours. I can also see that the
> cpu
> > load average is very less.
> [...]
> > Below is the ffmpeg command that i am using. Any help would be
> appreciated.
>
> We would appreciate its complete, uncut console output. If it's over,
> let's say, 2500 lines, and repetetive in the middle, please post the
> first 50 and last 50 lines, and upload the complete output somewhere
> else.
>
> > *ffmpeg -i "udp://230.1.1.15:10000?fifo_size=10000000&overrun_nonfatal=1
> > <http://230.1.1.15:10000?fifo_size=10000000&overrun_nonfatal=1>"
> > -analyzeduration 25M -probesize 50M -threads 0 -vsync 1 -filter_complex
> >
> "[i:0xd49]yadif[vout];[vout]split=4[out0][out1][out2][out3];[out0]setdar=16/9[v0];[out1]setdar=16/9[v1];[out2]setdar=16/9[v2];[out3]setdar=16/9[v3];[i:0xd4a]aresample=async=1:min_hard_comp=0.100000:first_pts=0[aout];[aout]asplit=4[a0][a1][a2][a3]"
> > \-vcodec libx264 -s:v:0 256x144 -tune film -r:v:0 25 -b:v:0 100000
> [...]
>
> Does the latency also happen with only one output? Or without yadif
> filter?
>
> Thanks,
> Moritz
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".


More information about the ffmpeg-user mailing list