Transcoder parameters - burn DVB subtitles in a video

[Krstareci]

Hi everybody,

Little help please...
How can I (or where) set some custom parameters for ffmpeg encoder in order to Burn dvbsub's directly into video.
New web-player working great but missing sub is huge flaw.

I was try to modify TranscodeArgs in the config.xml, but I can see that encoder always gets the same args. :confused:

Thanks

[mvallevand]

I think the config.xml for the web server uses TranscodeHLS not TranscodeArgs

Martin

[Krstareci]

Hi Martin,

Thank you for response.
I found "<TranscodeHLS>default</TranscodeHLS>", but I can't find any file that contains instructions of this profile, perhaps you can help me to find it?
I just want to add some custom commands that server pass to the ffmpeg.exe. If get success I will post some tutorial for other users here.

This platform is great but for 90% of my channels, that I want to watch remotely, I need subtitles, unfortunately my bandwidth is low so I can't avoid transcoding.

[mvallevand]

That is it, default is the only stored profile everything else you need to add yourself web.log will show you what default is and what you use.

Code:

2017-07-11 10:28:20.403    [DEBUG][24]    Default transcoder args: -y [SEEK] -i [SOURCE] -map_metadata -1 -threads 0 -ignore_unknown -map 0:v:0 -map 0:a:0 -map -0:s -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 -b:v [BITRATE] -maxrate [BITRATE] -bufsize [BUFSIZE] -vsync vfr -profile:v high -level 41 -force_key_frames "expr:gte(t,n_forced*3)" -s [RESOLUTION] [SUBTITLES] -flags -global_header -sc_threshold 0 -codec:a:0 aac -strict experimental -ac 2 -ab 128000 -af "adelay=1,aresample=async=1" -hls_time 3 -start_number 0 -hls_list_size 0 -y [TARGET]
2017-07-11 10:28:20.403    [DEBUG][24]    Using transcoder args:  -y [SEEK] -i [SOURCE] -map_metadata -1 -threads 0 -map 0:0 -map 0:1 -map -0:s -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 -b:v [BITRATE] -maxrate [BITRATE] -bufsize [BUFSIZE] -vsync vfr -profile:v high -level 41 -force_key_frames "expr:gte(t,n_forced*3)" -s [RESOLUTION] [SUBTITLES] -flags -global_header -sc_threshold 0 -codec:a:0 aac -strict experimental -ac 2 -ab 128000 -af "adelay=1,aresample=async=1" -hls_time 3 -start_number 0 -hls_list_size 0 -y [TARGET]

Martin

[Krstareci]

Thanks. I give it a try...

[Krstareci]

No mater what I change in "Default transcoder args: " section, in the log file I see that encoder always get the same commands.
It seams that he totally ignore these lines from the config file.
Only thing that I want to add is "-filter_complex "[0:v][0]overlay[v]" and from the batch file this working fine...

That is it, default is the only stored profile everything else you need to add yourself web.log will show you what default is and what you use.

Code:

2017-07-11 10:28:20.403    [DEBUG][24]    Default transcoder args: -y [SEEK] -i [SOURCE] -map_metadata -1 -threads 0 -ignore_unknown -map 0:v:0 -map 0:a:0 -map -0:s -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 -b:v [BITRATE] -maxrate [BITRATE] -bufsize [BUFSIZE] -vsync vfr -profile:v high -level 41 -force_key_frames "expr:gte(t,n_forced*3)" -s [RESOLUTION] [SUBTITLES] -flags -global_header -sc_threshold 0 -codec:a:0 aac -strict experimental -ac 2 -ab 128000 -af "adelay=1,aresample=async=1" -hls_time 3 -start_number 0 -hls_list_size 0 -y [TARGET]
2017-07-11 10:28:20.403    [DEBUG][24]    Using transcoder args:  -y [SEEK] -i [SOURCE] -map_metadata -1 -threads 0 -map 0:0 -map 0:1 -map -0:s -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 -b:v [BITRATE] -maxrate [BITRATE] -bufsize [BUFSIZE] -vsync vfr -profile:v high -level 41 -force_key_frames "expr:gte(t,n_forced*3)" -s [RESOLUTION] [SUBTITLES] -flags -global_header -sc_threshold 0 -codec:a:0 aac -strict experimental -ac 2 -ab 128000 -af "adelay=1,aresample=async=1" -hls_time 3 -start_number 0 -hls_list_size 0 -y [TARGET]

Martin

[mvallevand]

I am sure it works since in my example I removed -ignore_unknown and you can see they are different.

Martin

[sub]

You'd need to replace "default" with the following, then edit as necessary:

-y [SEEK] -i [SOURCE] -map_metadata -1 -threads 0 -ignore_unknown -map 0:v:0 -map 0:a:0 -map -0 -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 -b:v [BITRATE] -maxrate [BITRATE] -bufsize [BUFSIZE] -vsync vfr -profile:v high -level 41 -force_key_frames "expr:gte(t,n_forced*3)" -s [RESOLUTION] [SUBTITLES] -flags -global_header -sc_threshold 0 -codec:a:0 aac -strict experimental -ac 2 -ab 128000 -af "adelay=1,aresample=async=1" -hls_time 3 -start_number 0 -hls_list_size 0 -y [TARGET]

[Krstareci]

Success!
Taking Administrator's string and removing "-ignore_unknown" does the trick.
I'm still testing best settings but this is what I've looked for.
Thank you both for all of your help.