Gapless playback on A52 format changes?
Posted: 29 Dec 2013 17:16
Are there some settings in VLC that can be changed so the playback of A52 Sound is not silenced on format changes (2.0 => 5.1 or 5.1 => 2.0)?
This silencing is killing some "(famous) last sentences".
The VLC version is 2.1.2 Rincewind 64-bit on Windows 8.1 64-bit.
This is happening regardless of playing sound directly to 5.1 speakers connected analogly or using S/PDIF passthrough.
Playing the same file with Windows Media Player or the Video-APP doesn't skip sound on format change (but is downsampling the whole file to "stereo").
The log for such a file position when playing a TS-video-file:
(the change is from 2.0 to 5.1)
The same part using S/PDIF passthrough:
This silencing is killing some "(famous) last sentences".
The VLC version is 2.1.2 Rincewind 64-bit on Windows 8.1 64-bit.
This is happening regardless of playing sound directly to 5.1 speakers connected analogly or using S/PDIF passthrough.
Playing the same file with Windows Media Player or the Video-APP doesn't skip sound on format change (but is downsampling the whole file to "stereo").
The log for such a file position when playing a TS-video-file:
(the change is from 2.0 to 5.1)
Code: Select all
main debug: removing module "samplerate"
main debug: removing module "a52tofloat32"
main debug: removing module "scaletempo"
directsound debug: closing audio device
main debug: removing module "float_mixer"
main debug: keeping audio output
main debug: reusing audio output
directsound debug: Opening DirectSound Audio Output
directsound debug: Windows speaker config: 5.1 and stream has 6 channels, using 6 channels
directsound debug: couldn't use hardware sound buffer
directsound debug: channel reordering needed
main debug: output 'f32l' 48000 Hz 3F2R/LFE frame=1 samples/24 bytes
main debug: looking for audio volume module matching "any": 2 candidates
main debug: using audio volume module "float_mixer"
main debug: input 'a52 ' 48000 Hz 3F2R/LFE frame=1536 samples/1536 bytes
main debug: looking for audio filter module matching "scaletempo": 14 candidates
scaletempo debug: format: 48000 rate, 6 nch, 4 bps, fl32
scaletempo debug: params: 30 stride, 0.200 overlap, 14 search
scaletempo debug: 1.000 scale, 1440.000 stride_in, 1440 stride_out, 1152 standing, 288 overlap, 672 search, 2400 queue, fl32 mode
main debug: using audio filter module "scaletempo"
main debug: conversion: 'a52 '->'f32l' 48000 Hz->48000 Hz 3F2R/LFE->3F2R/LFE
main debug: looking for audio converter module matching "any": 12 candidates
main debug: no audio converter modules matched
main debug: looking for audio converter module matching "any": 12 candidates
main debug: using audio converter module "a52tofloat32"
main debug: conversion pipeline complete
main debug: conversion: 'f32l'->'f32l' 48000 Hz->48000 Hz 3F2R/LFE->3F2R/LFE
main debug: conversion pipeline complete
main debug: looking for audio resampler module matching "any": 3 candidates
main debug: using audio resampler module "samplerate"
main debug: inserting 70276 zeroesCode: Select all
main debug: removing module "a52tospdif"
directsound debug: closing audio device
main debug: keeping audio output
main debug: reusing audio output
directsound debug: Opening DirectSound Audio Output
directsound debug: using A/52 pass-through over S/PDIF
main debug: output 'spdi' 48000 Hz 3F2R/LFE frame=1536 samples/6144 bytes
main debug: looking for audio volume module matching "any": 2 candidates
main debug: no audio volume modules matched
main debug: input 'a52 ' 48000 Hz 3F2R/LFE frame=1536 samples/1536 bytes
main debug: pass-through: 'a52 '->'spdi' 48000 Hz->48000 Hz 3F2R/LFE->3F2R/LFE
main debug: looking for audio converter module matching "any": 12 candidates
main debug: using audio converter module "a52tospdif"
main debug: inserting 95188 zeroes