Por que estou perdendo áudio no VLC ao reproduzir vídeos HQ?

Question

Estou tendo um problema com o VLC quando reproduzo vídeos HQ (720p ou superior): quando tento procurar uma cena específica (digamos que estou reproduzindo um filme e quero chegar a uma marca de 30 minutos), o som apaga-se Isso não acontece sempre, mas acontece com frequência, e quando perco o som é apenas no vídeo que estou jogando. Eu nunca tive esse problema no Parole Media Player, então acho que algo deve ser confundido no VLC. Alguém tem alguma idéia do que poderia estar errado e como posso corrigi-lo?

Atualização: seguindo os conselhos de Skuminder , corri vlc -vvv my_video.mp4 e aqui apresento as linhas referentes ao áudio da saída que recebi:

[0xae7705b0] faad decoder warning: decoded zero sample
[0x8803d40] main playlist debug: reusing audio output
[0x87f9030] pulse audio output debug: using stereo channel map
[0xaad017c8] main spu text debug: looking for text renderer module matching "any": 3 candidates
[0x87f9030] pulse audio output debug: changed buffer metrics: maxlength=4194304, tlength=46080, prebuf=0, minreq=15360
[0x87f9030] pulse audio output debug: connected to sink alsa_output.pci-0000_00_1b.0.analog-stereo
[0x87f9030] main audio output debug: output 'f32l' 48000 Hz Stereo frame=1 samples/8 bytes
[0xaaf06568] main volume debug: looking for audio volume module matching "any": 2 candidates
[0x87f9030] pulse audio output debug: base volume: 65536
[0x87f9030] pulse audio output debug: changing sink 0: alsa_output.pci-0000_00_1b.0.analog-stereo (Built-in Audio Analog Stereo)


[0xaaf06568] main volume debug: using audio volume module "float_mixer"
[0x87f9030] main audio output debug: input 'f32l' 48000 Hz Stereo frame=1 samples/8 bytes
[0xaaf07a58] main audio filter debug: looking for audio filter module matching "scaletempo": 14 candidates
[0xaaf07a58] scaletempo audio filter debug: format: 48000 rate, 2 nch, 4 bps, fl32
[0xaaf07a58] scaletempo audio filter debug: params: 30 stride, 0.200 overlap, 14 search
[0xaaf07a58] scaletempo audio filter debug: 1.000 scale, 1440.000 stride_in, 1440 stride_out, 1152 standing, 288 overlap, 672 search, 2400 queue, fl32 mode
[0xaaf07a58] main audio filter debug: using audio filter module "scaletempo"
[0x87f9030] main audio output debug: conversion: 'f32l'->'f32l' 48000 Hz->48000 Hz Stereo->Stereo
[0x87f9030] main audio output debug: conversion pipeline complete
[0x87f9030] main audio output debug: conversion: 'f32l'->'f32l' 48000 Hz->48000 Hz Stereo->Stereo
[0x87f9030] main audio output debug: conversion pipeline complete
[0xaaf0f228] main audio resampler debug: looking for audio resampler module matching "any": 3 candidates
[0xaaf0f228] main audio resampler debug: using audio resampler module "samplerate"
[0xae7705b0] main decoder debug: End of audio preroll


[0x87f9030] pulse audio output debug: cannot synchronize start
[0x87f9030] pulse audio output debug: deferring start (30851 us)
[0x87f9030] pulse audio output debug: deferring start (9397 us)
[0x87f9030] pulse audio output warning: starting late (-12465 us)
[0x87f9030] pulse audio output debug: started
[0x87f9030] pulse audio output debug: changing sink 0: alsa_output.pci-0000_00_1b.0.analog-stereo (Built-in Audio Analog Stereo)


[0x87f9030] pulse audio output debug: underflow
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 32%
[0xae7705b0] main decoder debug: End of audio preroll
[0x87f9030] pulse audio output debug: underflow
[0xb24024a0] main input debug: Buffering 66%
[0xb24024a0] main input debug: Buffering 99%
[0xb24024a0] main input debug: Stream buffering done (398 ms in 76 ms)


[0x87f9030] pulse audio output debug: underflow
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 33%
[0xb24024a0] main input debug: Buffering 66%
[0xb24024a0] main input debug: Buffering 99%
[0xb24024a0] main input debug: Stream buffering done (399 ms in 94 ms)
[0xae7705b0] main decoder debug: End of audio preroll
[0x87f9030] pulse audio output debug: underflow


[0x87f9030] pulse audio output debug: underflow
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 33%
[0xb24024a0] main input debug: Buffering 66%
[0xb24024a0] main input debug: Buffering 99%
[0xb24024a0] main input debug: Stream buffering done (399 ms in 3 ms)
[0xae7705b0] main decoder debug: End of audio preroll
[0x87f9030] pulse audio output debug: underflow


[0x87f9030] pulse audio output debug: underflow
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 32%
[0xae7705b0] main decoder debug: End of audio preroll
[0x87f9030] pulse audio output debug: underflow
[0xb24024a0] main input debug: Buffering 66%
[0xb24024a0] main input debug: Buffering 99%
[0xb24024a0] main input debug: Stream buffering done (398 ms in 49 ms)
[0xae71ee18] main decoder debug: End of video preroll
[0xae71ee18] main decoder debug: Received first picture
[0xb24024a0] main input debug: Decoder buffering done in 599 ms
[0x87f9030] pulse audio output debug: underflow[0x87f9030] main audio output debug: inserting 27606 zeroes
[0x87f9030] main audio output warning: playback way too early (-575136): playing silence


[0x87f9030] pulse audio output debug: underflow
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 0%
[0xb24024a0] main input debug: Buffering 32%
[0xae7705b0] main decoder debug: End of audio preroll
[0x87f9030] pulse audio output debug: underflow
[0xb24024a0] main input debug: Buffering 66%
[0xb24024a0] main input debug: Buffering 99%
[0xb24024a0] main input debug: Stream buffering done (398 ms in 78 ms)

Espero que haja algo interessante.