| Message ID | 20180820214839.34521-1-epirat07@gmail.com |
|---|---|
| State | New |
| Headers | show |
On 21-08-2018 03:18 AM, Marvin Scholz wrote: > +@example > +ffmpeg -i input -af loudnorm=I=-23:TP=-1:measured_I=-9.0:measured_TP=1.5:measured_LRA=9.4:measured_thresh=-19.5:print_format=summary output Since your input LRA is 9.4, and output LRA is 7 (default), the filter will upsample to 192 kHz. You should resample afterwards. If we publish this, it will generate support queries as to why our example produces "silent" files. Thanks, Gyan
On 21 Aug 2018, at 6:44, Gyan Doshi wrote: > On 21-08-2018 03:18 AM, Marvin Scholz wrote: > > >> +@example >> +ffmpeg -i input -af >> loudnorm=I=-23:TP=-1:measured_I=-9.0:measured_TP=1.5:measured_LRA=9.4:measured_thresh=-19.5:print_format=summary >> output > > Since your input LRA is 9.4, and output LRA is 7 (default), the filter > will upsample to 192 kHz. You should resample afterwards. > Ok, whats the correct way to do that? > If we publish this, it will generate support queries as to why our > example produces "silent" files. > > Thanks, > Gyan > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
On 22-08-2018 04:43 AM, Marvin Scholz wrote: >> >>> +@example >>> +ffmpeg -i input -af >>> loudnorm=I=-23:TP=-1:measured_I=-9.0:measured_TP=1.5:measured_LRA=9.4:measured_thresh=-19.5:print_format=summary >>> output >> >> Since your input LRA is 9.4, and output LRA is 7 (default), the filter >> will upsample to 192 kHz. You should resample afterwards. >> > > Ok, whats the correct way to do that? e.g. ffmpeg -i input -af loudnorm=...,aresample=48000 output Ideally, loudnorm should call a resampler internally, but for now, this is what we can do. Thanks, Gyan
On 22 Aug 2018, at 6:40, Gyan Doshi wrote: > On 22-08-2018 04:43 AM, Marvin Scholz wrote: > >>> >>>> +@example >>>> +ffmpeg -i input -af >>>> loudnorm=I=-23:TP=-1:measured_I=-9.0:measured_TP=1.5:measured_LRA=9.4:measured_thresh=-19.5:print_format=summary >>>> output >>> >>> Since your input LRA is 9.4, and output LRA is 7 (default), the >>> filter will upsample to 192 kHz. You should resample afterwards. >>> >> >> Ok, whats the correct way to do that? > > e.g. > > ffmpeg -i input -af loudnorm=...,aresample=48000 output This just gives me: [Parsed_aresample_1 @ 0x7f99fb503ec0] Cannot select channel layout for the link between filters Parsed_aresample_1 and format_out_0_1. Error reinitializing filters! Failed to inject frame into filter network: Invalid argument Error while processing the decoded data for stream #0:0 > > Ideally, loudnorm should call a resampler internally, but for now, > this is what we can do. > > Thanks, > Gyan > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
On 22-08-2018 02:38 PM, Marvin Scholz wrote: > > > On 22 Aug 2018, at 6:40, Gyan Doshi wrote: > >> On 22-08-2018 04:43 AM, Marvin Scholz wrote: >> >>>> >>>>> +@example >>>>> +ffmpeg -i input -af >>>>> loudnorm=I=-23:TP=-1:measured_I=-9.0:measured_TP=1.5:measured_LRA=9.4:measured_thresh=-19.5:print_format=summary >>>>> output >>>> >>>> Since your input LRA is 9.4, and output LRA is 7 (default), the >>>> filter will upsample to 192 kHz. You should resample afterwards. >>>> >>> >>> Ok, whats the correct way to do that? >> >> e.g. >> >> ffmpeg -i input -af loudnorm=...,aresample=48000 output > > This just gives me: > > [Parsed_aresample_1 @ 0x7f99fb503ec0] Cannot select channel layout for > the link between filters Parsed_aresample_1 and format_out_0_1. Share complete command and log. Gyan
On 22 Aug 2018, at 11:44, Gyan Doshi wrote: > On 22-08-2018 02:38 PM, Marvin Scholz wrote: >> >> >> On 22 Aug 2018, at 6:40, Gyan Doshi wrote: >> >>> On 22-08-2018 04:43 AM, Marvin Scholz wrote: >>> >>>>> >>>>>> +@example >>>>>> +ffmpeg -i input -af >>>>>> loudnorm=I=-23:TP=-1:measured_I=-9.0:measured_TP=1.5:measured_LRA=9.4:measured_thresh=-19.5:print_format=summary >>>>>> output >>>>> >>>>> Since your input LRA is 9.4, and output LRA is 7 (default), the >>>>> filter will upsample to 192 kHz. You should resample afterwards. >>>>> >>>> >>>> Ok, whats the correct way to do that? >>> >>> e.g. >>> >>> ffmpeg -i input -af loudnorm=...,aresample=48000 output >> >> This just gives me: >> >> [Parsed_aresample_1 @ 0x7f99fb503ec0] Cannot select channel layout >> for the link between filters Parsed_aresample_1 and format_out_0_1. > > Share complete command and log. $ ffmpeg -i ~/Movies/input.wmv -af loudnorm=I=-13:TP=-1:measured_I=-9.0:measured_TP=1.5:measured_LRA=9.4:measured_thresh=-19.5:linear=true:print_format=summary,aresample=48000 -c:v prores -c:a pcm_s16le -f mov output.mov ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers built with Apple LLVM version 9.1.0 (clang-902.0.39.2) configuration: --prefix=/usr/local/Cellar/ffmpeg/4.0.2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma libavutil 56. 14.100 / 56. 14.100 libavcodec 58. 18.100 / 58. 18.100 libavformat 58. 12.100 / 58. 12.100 libavdevice 58. 3.100 / 58. 3.100 libavfilter 7. 16.100 / 7. 16.100 libavresample 4. 0. 0 / 4. 0. 0 libswscale 5. 1.100 / 5. 1.100 libswresample 3. 1.100 / 3. 1.100 libpostproc 55. 1.100 / 55. 1.100 [wmv3 @ 0x7fb7c5806600] Extra data: 8 bits left, value: 20 Guessed Channel Layout for Input Stream #0.0 : stereo Input #0, asf, from '/Users/epirat/Movies/input.wmv': Metadata: SfOriginalFPS : 299700 WMFSDKVersion : 12.0.17134.137 WMFSDKNeeded : 0.0.0.0000 IsVBR : 0 DeviceConformanceTemplate: MP@HL Duration: 00:04:28.20, start: 0.000000, bitrate: 5446 kb/s Stream #0:0(ger): Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz, stereo, fltp, 192 kb/s Stream #0:1(ger): Video: wmv3 (Main) (WMV3 / 0x33564D57), yuv420p, 1280x720, 6099 kb/s, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc [wmv3 @ 0x7fb7c5806c00] Extra data: 8 bits left, value: 20 Stream mapping: Stream #0:1 -> #0:0 (wmv3 (native) -> prores (native)) Stream #0:0 -> #0:1 (wmav2 (native) -> pcm_s16le (native)) Press [q] to stop, [?] for help [prores @ 0x7fb7c5860200] encoding with ProRes standard (apcn) profile [prores @ 0x7fb7c5891000] encoding with ProRes standard (apcn) profile [prores @ 0x7fb7c58e2a00] encoding with ProRes standard (apcn) profile [prores @ 0x7fb7c58d8c00] encoding with ProRes standard (apcn) profile [prores @ 0x7fb7c5814c00] encoding with ProRes standard (apcn) profile [Parsed_aresample_1 @ 0x7fb7c540d500] Cannot select channel layout for the link between filters Parsed_aresample_1 and format_out_0_1. Error reinitializing filters! Failed to inject frame into filter network: Invalid argument Error while processing the decoded data for stream #0:0 Conversion failed! > > Gyan > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
On 22-08-2018 04:01 PM, Marvin Scholz wrote: > Guessed Channel Layout for Input Stream #0.0 : stereo ... > Stream #0:0(ger): Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz, > stereo, fltp, 192 kb/s > [Parsed_aresample_1 @ 0x7fb7c540d500] Cannot select channel layout for > the link between filters Parsed_aresample_1 and format_out_0_1. For this file, aresample=48000:ocl=stereo Gyan
On 22-8-2018 12:52, Gyan Doshi <gyandoshi@gmail.com> wrote: > On 22-08-2018 04:01 PM, Marvin Scholz wrote: >> [Parsed_aresample_1 @ 0x7fb7c540d500] Cannot select channel layout for the link between filters Parsed_aresample_1 and format_out_0_1. > For this file, > > aresample=48000:ocl=stereo > > > Gyan Related and still unresolved: https://trac.ffmpeg.org/ticket/6638. -- Reino
diff --git a/doc/filters.texi b/doc/filters.texi index 32c95b591c..f082d55d32 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -3659,6 +3659,29 @@ Set print format for stats. Options are summary, json, or none. Default value is none. @end table +@subsection Examples + +For double pass processing you need to first run the filter with +@code{print_format} set to either @code{json} or @code{summary}, then read +the values in the output and pass it to the next run of the filter: + +@example +$ ffmpeg -i input -af loudnorm=I=-23:TP=-1:print_format=summary -f null - + +[...] +Input Integrated: -9.0 LUFS +Input True Peak: +1.5 dBTP +Input LRA: 9.4 LU +Input Threshold: -19.5 LUFS +@end example + +Then pass the input measurements to the next run that produces the result: + +@example +ffmpeg -i input -af loudnorm=I=-23:TP=-1:measured_I=-9.0:measured_TP=1.5:measured_LRA=9.4:measured_thresh=-19.5:print_format=summary output +@end example + + @section lowpass Apply a low-pass filter with 3dB point frequency.