Loop_move_XX_forward & scratching disables Loop

[mixxxbot]

Reported by: ronso0
Date: 2017-03-02T16:19:36Z
Status: Fix Released
Importance: Medium
Launchpad Issue: lp1669500

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I experience that loop_move_xx_forward exits the loop if moved over loop_out boundary.

Same happens when scratching backwards over loop_in, which I do after setting a loop and then scratching until I find the right point to drop it.

Reproduce:
1 load a track
2 play, set up a loop
3 scratch backwards over loop_in

play position jumps to loop_out
loop is disabled

6112 built from source
6359 faad=1 ffmpeg=0
6359 faad=0 ffmpeg=1
6359 faad=0 ffmpeg=0

might be related to Bug 1475442

[mixxxbot]

Commented by: ronso0
Date: 2017-10-13T07:36:45Z

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I tested again, this behavior occurs very unpredictably.
Sometimes scratching works perfectly when loading a track the first time in a session, but with same track reloaded later on, it would fail.

[mixxxbot]

Commented by: ronso0
Date: 2017-10-13T07:37:17Z

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Also it seems to be codec dependent. I discoverd a .wma which always works.

6359 faad=0 ffmpeg=1

[mixxxbot]

Commented by: ronso0
Date: 2017-10-13T10:16:46Z

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I tried [WiP] Universal SoundSource based on FFmpeg 3.1 (and beyond)
#1356
and appearantly it's fixed for some mp3 and wav files that fail with master.

[mixxxbot]

Commented by: daschuer
Date: 2017-11-01T21:36:28Z

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A possible fix is in:
#1367

I have found a rounding issue when playing at fast rates.
OTOH this does not explain why it is fixes with FFmpeg 3.1

Maybe you see a different issue?

[mixxxbot]

Issue closed with status Fix Released.