[英]ffmpeg - mux video and audio and trim the audio
我有一個很長的音頻部分,我想混流在一起很短的視頻部分。
我正在嘗試使用以下命令進行復用 :
ffmpeg -y -i /Documents/viz-1/01/Video_0-0002.h264 -i /Documents/viz-1/01/Audio.wav -codec:v copy -f mp4 -af atrim=4:6 -strict experimental -movflags faststart /Documents/viz-1/01/Video_0-0001.mp4
但是音頻混亂了……我該怎么做呢?
也嘗試過,聽起來好像最后還是寂靜了。
ffmpeg -y -i Video_0-0003.h264 -i Audio.wav -c:v copy -af atrim=6:8,asetpts=PTS-STARTPTS -strict experimental -movflags +faststart Video_0-0003.mp4
Input #0, h264, from 'Video_0-0003.h264': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (Main), yuv420p(progressive), 388x388 [SAR 1:1 DAR 1:1], 30 fps, 30 tbr, 1200k tbn, 60 tbc Guessed Channel Layout for Input Stream #1.0 : stereo Input #1, wav, from 'Audio.wav': Duration: 00:00:16.98, bitrate: 1411 kb/s Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s Output #0, mp4, to 'Video_0-0003.mp4': Metadata: encoder : Lavf57.56.100 Stream #0:0: Video: h264 (Main) ([33][0][0][0] / 0x0021), yuv420p(progressive), 388x388 [SAR 1:1 DAR 1:1], q=2-31, 30 fps, 30 tbr, 1200k tbn, 1200k tbc Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s Metadata: encoder : Lavc57.64.101 aac Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native)) Press [q] to stop, [?] for help [mp4 @ 0x7fca8f015000] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly [mp4 @ 0x7fca8f015000] Starting second pass: moving the moov atom to the beginning of the file frame= 60 fps=0.0 q=-1.0 Lsize= 242kB time=00:00:02.02 bitrate= 982.2kbits/s speed= 21x video:207kB audio:32kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.382400% [aac @ 0x7fca8f017400] Qavg: 1076.270
嘗試
ffmpeg -y -i /Documents/viz-1/01/Video_0-0002.h264 -i /Documents/viz-1/01/Audio.wav -c:v copy -af atrim=4:6,asetpts=PTS-STARTPTS -strict experimental -movflags +faststart /Documents/viz-1/01/Video_0-0001.mp4
您可以嘗試通過視頻定時來剪切音頻,然后破壞視頻和音頻軌道。 在單獨的ffmpeg進程中使用-vn和-an。
ffmpeg -i video.mp4 -c:v h264 -an -y video.h264
ffmpeg -i video.mp4 -c:a aac -t 00:01:00 -vn -y audio.aac
對於划痕曲目:
ffmpeg -i auido.acc -i video.h264 -c:v copy -c:a copy -f mp4 -y out.mp4
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