ffmpeg transcoder args

[fwpvr789]

Hi,

How can I add additional argument to ffmpeg command that NextPVR uses? I wanted to add "-max_muxing_queue_size 1024" to fix a transcoding issue. I edited the following section in config.xml but it didn't take effect

<TranscodeArgsHLS>-y [SEEK] -i [SOURCE] -map_metadata -1 -threads 0 -map 0:0 -map 0:1 -map -0 -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 -b:v [BITRATE] -maxrate [BITRATE] -bufsize 2698344 -vsync vfr -profile:v high -level 41 -aspect [ASPECT] -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 -max_muxing_queue_size 1024 -y [TARGET]</TranscodeArgsHLS>

the nrecord.log shows a default transcoder args is always used

2020-07-04 01:53:19.232 [DEBUG][7] Default transcoder args: -y [SEEK] -i [SOURCE] -map_metadata -1 -threads [THREADS] -ignore_unknown  -map 0:v:0? [PREFERRED_LANGUAGE] -map 0:a:[AUDIO_STREAM] -map -0 -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 [DEINTERLACING] -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] [SCALE] [SUBTITLES] -flags -global_header -sc_threshold 0 -codec:a:0 [AUDIO_CODEC] -strict experimental -ac [AUDIO_CHANNELS] -ab [AUDIO_BITRATE] -hls_time [SEGMENT_DURATION] -start_number 0 -hls_list_size [SEGMENT_COUNT] -y [TARGET]

so where is the default configured if it's not in config.xml?

Thanks.

[mvallevand]

I showed another user how to use that option https://forums.nextpvr.com/showthread.ph...#pid542910

Sounds like sub should make that the default.

Martin

[fwpvr789]

I showed another user how to use that option https://forums.nextpvr.com/showthread.ph...#pid542910

Sounds like sub should make that the default.

Martin

Martin, in that thread you suggested adding "-max_muxing_queue_size 1024" to <TranscodeHLS>, which I assume it's in the config.xml, but as I mentioned I tried that already but it didn't take effect, or am I missing any additional step in that thread?

Code:

-y [SEEK] -i [SOURCE] -max_muxing_queue_size 1024 -map_metadata -1 -threads [THREADS] -ignore_unknown  -map 0:v:0? [PREFERRED_LANGUAGE] -map 0:a:[AUDIO_STREAM] -map -0:s -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 [DEINTERLACING] -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] [SCALE] [SUBTITLES] -flags -global_header -sc_threshold 0 -codec:a:0 [AUDIO_CODEC] -strict experimental -ac [AUDIO_CHANNELS] -ab [AUDIO_BITRATE] -hls_time [SEGMENT_DURATION] -start_number 0 -hls_list_size [SEGMENT_COUNT] -y [TARGET]

[fwpvr789]

Figured it out now! I should modify tag <TranscodeHLS> instead of <TranscodeArgsHLS>. so what's the difference between these two anyway? thanks.