[FFmpeg-trac] #7747(undetermined:new): Crackling noises in audio on iPod
FFmpeg
trac at avcodec.org
Thu Feb 21 19:39:59 EET 2019
#7747: Crackling noises in audio on iPod
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Reporter: forthrin | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Some converted audio and video files get sporadic cracking noises during
playback on an iPod Nano 3rd generation.
It can happen dozens of times during 30 minutes. Some times 3 times per
second, some times 20 seconds apart. There is no clear pattern.
Enclosed is a small excerpt that includes:
1. An original input file
2. The output file from FFmpeg
3. What the output file sounds like when played on the iPod (played
through a speaker and recorded with a microphone)
The command line was a simple `ffmpeg -i original.ac3 converted.m4a`.
Version is latest Git head, run on macOS.
What could cause these crackling noises? Is this a known issue? How can I
prevent them from occurring?
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Ticket URL: <https://trac.ffmpeg.org/ticket/7747>
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