[FFmpeg-devel] [PATCH v3] doc/filters: Add double-pass example for loudnorm

[Gyan Doshi]

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:
>>
>>>>
>>>>> + at 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