我有一組在直播期間錄製的 MP4 檔案。它們在 VLC（在 Windows 上）中運作得很好，但當我嘗試將它們匯入 Premiere Pro 時，程式只是掛起。我認為文件格式可能存在一些問題，所以我嘗試使用 ffmpeg 將它們複製到新文件中，只需執行以下操作
ffmpeg -i commentator1.mp4 -c copy commentator1-fixed.mp4
該命令運行並產生一個檔案和以下輸出
ffmpeg version N-99697-g6fb2bdd Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
configuration: --prefix=/home/zetatwo/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/zetatwo/ffmpeg_build/include --extra-ldflags=-L/home/zetatwo/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/home/zetatwo/bin --enable-gpl --enable-gnutls --enable-libaom --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libsvtav1 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --enable-libsrt
libavutil 56. 60.100 / 56. 60.100
libavcodec 58.111.101 / 58.111.101
libavformat 58. 62.100 / 58. 62.100
libavdevice 58. 11.102 / 58. 11.102
libavfilter 7. 88.100 / 7. 88.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100
[h264 @ 0x55b5fa2d5640] no frame!
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'commentator1.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isomavc1
Duration: 03:48:14.43, start: 0.000000, bitrate: 2670 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 2501 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : VideoHandler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 160 kb/s (default)
Metadata:
handler_name : SoundHandler
Output #0, mp4, to 'commentator1-cut.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isomavc1
encoder : Lavf58.62.100
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, q=2-31, 2501 kb/s, 30 fps, 30 tbr, 90k tbn, 90k tbc (default)
Metadata:
handler_name : VideoHandler
encoder : VideoHandler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 160 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mp4 @ 0x55b5fa84fa80] Non-monotonous DTS in output stream 0:0; previous: -6000, current: -6000; changing to -5999. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55b5fa84fa80] Non-monotonous DTS in output stream 0:0; previous: 2586000, current: 2586000; changing to 2586001. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55b5fa84fa80] Non-monotonous DTS in output stream 0:0; previous: 2586001, current: 2586000; changing to 2586002. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55b5fa84fa80] Non-monotonous DTS in output stream 0:0; previous: 3063000, current: 3063000; changing to 3063001. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55b5fa84fa80] Non-monotonous DTS in output stream 0:0; previous: 3381000, current: 3381000; changing to 3381001. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55b5fa84fa80] Non-monotonous DTS in output stream 0:0; previous: 3732000, current: 3732000; changing to 3732001. This may result in incorrect timestamps in the output file.
frame=410832 fps=22838 q=-1.0 Lsize= 4468127kB time=03:48:14.36 bitrate=2672.8kbits/s speed= 761x
video:4181003kB audio:268225kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.424778%
然而，當我在 VLC 中播放新檔案時，影片效果很好，但聲音大約每隔一秒就會中斷一次。該檔案現在可以匯入到 Premiere Pro 中，但它會將其解釋為僅不含視訊的音訊檔案。
- 我該如何解釋這個輸出 ffmpeg？
- 這可能是什麼原因造成的？
- 我如何獲得有關文件的更多詳細資訊以了解更多有關正在發生的情況？
- 有沒有好的方法來解決這個問題？我應該完全重新編碼文件嗎？ （我不想，因為有很多媒體）