#8439: audio_frame_queue: Incorrect dequeued timestamps
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Reporter: Lastique | Type: defect
Status: new | Priority: normal
Component: avcodec | Version: 4.2
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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The ff_af_queue_add/ff_af_queue_remove functions do not reproduce the
timestamps that the user provides in AVFrame::pts. Effectively, the
af_queue introduces a negative offset in the timestamps produced in
AVPacket::pts.
For example, aacenc encoder has a delay of 1024 samples. If the user
provides AVFrame::pts = 0 in the first frame sent to the encoder then the
first packet received from the encoder will have AVPacket::pts = -1024.
Encoders should produce encoded timestamps equivalent to the timestamps
that were passed by the users in decoded frames.
This problem was found when using ffmpeg through C API, I'm not sure it
can be shown from CLI.
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Ticket URL: <https://trac.ffmpeg.org/ticket/8439>
FFmpeg <https://ffmpeg.org>
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