Bug 77 – Recordings of audio played in Audacity are truncated by approximately 100 ms

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Audacity 3.0.3 development began 19th April 2021

Audacity Bugzilla

Bug 77 - Recordings of audio played in Audacity are truncated by approximately 100 ms


Summary:	Recordings of audio played in Audacity are truncated by approximately 100 ms

Status:	CLOSED NOT-A-BUG

Product:	Audacity
Classification:	Unclassified
Component:	Application Core
Version:	1.3.11
Hardware:	Per OS All

Importance:	P4 Repeatable
Assigned To:	Default Assignee for New Bugs

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2010-01-28 15:17 UTC by James Crook
Modified:	2018-08-20 11:51 UTC (History)
CC List:	3 users (show)

See Also:
Steps To Reproduce:	* GA: To reproduce: 1. Generate 2 seconds tone. 2. Record from stereo mix (or line-out patched to line-in) with "overdub" on. Host choice does not matter. 3. In the recorded track, zoom in and select from the start of the tone to the end of the track. Observe that this duration is less than 2 seconds.
Release Note:
First Git SHA:
Group:	---
Workaround:
Closed:	2018-08-20 00:00:00

Attachments
Show slider setting in hover tooltips (2.61 KB, text/plain) 2013-03-05 05:15 UTC, Steve Daulton	Details
Show Obsolete (1) Add an attachment (proposed patch, testcase, etc.)

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Description James Crook 2010-01-28 15:17:25 UTC

Comment 1 Steve Daulton 2013-02-28 11:09:23 UTC

Testing on Linux I'm finding that the amount of truncation is dependent on the application that is used for playing and the sound system.

For example, with VLC I'm losing over 400 ms at the end, whereas with MPlayer I'm losing only 238 samples, and recording from Ardour with Jack audio system it is sample accurate.

My conclusion is that (on Linux at least) this "bug" is due to how the sound system handles the playback applications audio buffer rather than an Audacity issue. Unless there's some other problem on other operating systems I think this bug should be "Closed - Invalid".

Comment 2 Steve Daulton 2013-03-05 05:15:24 UTC

Created attachment 360 [details]
Show slider setting in hover tooltips

Adds the slider setting (2 decimal places) to the hover tool-tip. Also sets the "on drag" tool tip to 2 decimal places to match.

When dragging a slider the status bar should indicate the initial position of the the slider (as was shown in the "on hover" tool tip) while the "on drag" tool tip displays the current position.

Comment 3 Steve Daulton 2013-03-05 05:19:59 UTC

(In reply to comment #2)
Sorry, my previous comment and the attachment should have been attached to bug 74.
Can attachments be removed?

Comment 4 Steve Daulton 2013-03-05 05:24:33 UTC

Comment on attachment 360 [details]
Show slider setting in hover tooltips

Marked obsolete - attached to wrong bug reort

Comment 5 James Crook 2017-08-07 09:22:24 UTC

CLOSED INVALID per Steve's comment #1