当我播放 HQ 视频（720p 及更高）时，我遇到了 VLC 问题：当我尝试寻找特定场景时（假设我正在播放电影并想要达到 30 分钟标记），声音就会消失。这种情况并不总是发生，但确实经常发生，当我失去声音时，声音只出现在我正在播放的视频上。我在 Parole Media Player 上从来没有遇到过这个问题，所以我认为 VLC 上一定有什么配置错误。有人知道可能出了什么问题以及我该如何解决它吗？
更新：根据 的建议Skuminder，我跑了vlc -vvv my_video.mp4，在这里我展示了有关我得到的输出音频的行：
[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)
希望有什么有趣的事情。
答案1
如果 VLC 使用脉冲音频（通过命令行播放文件vlc --verbose 2 --log-verbose 3 "filename"），可以尝试转到 VLC 工具/首选项/音频并使用不同的输出模块和设备。然后重新启动VLC，可能会显示错误，重新启动。也许可以从互联网上的 vlc 命令输出中查找错误查找条目或搜索/报告给PA或 VLC 正在使用的其他模块。