我无法将简单的纯音频 .flv 转换为 AAC 格式。音频流显然在那里,我可以在手动播放时听到它。我需要不同的参数来完成这个吗?
ffmpeg -i test.flv test.aac
[flv @ 0x23b3260]Could not find codec parameters (Video: 0x0000)
Input #0, flv, from 'test.flv':
Duration: 00:00:12.95, start: 0.000000, bitrate: N/A
Stream #0.0: Video: 0x0000, 1k tbr, 1k tbn, 1k tbc
Stream #0.1: Audio: nellymoser, 8000 Hz, mono, s16
Output #0, adts, to 'test.aac':
Stream #0.0: Audio: 0x0000, 8000 Hz, mono, s16, 64 kb/s
Stream mapping:
Stream #0.1 -> #0.0
Unsupported codec for output stream #0.0