Re: [FFmpeg-devel] [PATCH 14/38] lavu/opt: factor per-type dispatch out of av_opt_set()

[James Almer <jamrial@gmail.com>]

On 2/23/2024 7:50 PM, Michael Niedermayer wrote:
> Hi Anton
> 
> On Fri, Feb 23, 2024 at 02:58:36PM +0100, Anton Khirnov wrote:
>> Will be useful in following commits.
>> ---
> 
> breaks:
> 
> ./ffmpeg -y -request_channel_layout 3 -i bug/401/mlp_5point1_downmixof6channel.mlp -bitexact file-2-mlp_5point1_downmixof6channel.wav

fwiw, request_channel_layout will be removed in the upcoming bump. You 
should use -downmix stereo.

> 
> [mlp @ 0x55690e23ff80] Error setting option request_channel_layout to value 3.
> [mlp @ 0x55690e23ed00] Failed to open codec in avformat_find_stream_info
> [mlp @ 0x55690e23ff80] Error setting option request_channel_layout to value 3.
> Input #0, mlp, from 'bug/401/mlp_5point1_downmixof6channel.mlp':
>    Duration: N/A, start: 0.000000, bitrate: N/A
>    Stream #0:0: Audio: mlp, 48000 Hz, 5.1, s32 (24 bit)
> [mlp @ 0x55690e257900] Error setting option request_channel_layout to value 3.
> [aist#0:0/mlp @ 0x55690e254dc0] [dec:mlp @ 0x55690e256f40] Error while opening decoder: Invalid argument
> [aost#0:0/pcm_s16le @ 0x55690e255a80] Error initializing a simple filtergraph
> Error opening output file file-2-mlp_5point1_downmixof6channel.wav.
> Error opening output files: Invalid argument
> 
> i suspect this isnt specific to the file but i can provide it if it
> doesnt reproduce with a other file
> 
> thx
> 
> [...]
> 
> 
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