[FFmpeg-trac] #11562(ffmpeg:new): ffmpeg adds an extra audio stream to the output if apad filter_complex is used
FFmpeg
trac at avcodec.org
Tue Apr 29 18:38:32 EEST 2025
#11562: ffmpeg adds an extra audio stream to the output if apad filter_complex is
used
-------------------------------------+-------------------------------------
Reporter: weihuaqd | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: 7.1
Keywords: | Blocked By:
filter_complex apad |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug: ffmpeg adds an extra audio stream to the output if
apad filter_complex is used. Here's the stream mapping:
{{{
Stream mapping:
Stream #0:1 (aac) -> apad:default
apad:default -> Stream #0:0 (aac)
Stream #0:0 -> #0:1 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:2 (aac (native) -> aac (native))
}}}
How to reproduce:
{{{
ffmpeg -v 9 -loglevel 99 -i webcam_recording_original.mp4 -to 00:00:30
-map 0:v? -map 0:a? -filter_complex [0:a?]apad -shortest -y test.mp4
}}}
This affects 6.* and 7.1.1.
4.4 works as expected.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11562>
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