问题描述
我正在尝试使用 MediaConvert 对视频进行转码，但出现以下错误：
错误消息 Demuxer: [ReadPacketData File read Failed - end of file 命中 [1105924]。文件被截断了吗？]
当我尝试运行 ffmpeg 命令以获取有关文件的信息时，我看到了：
非单调增加 dts 到流中的多路复用器
我想知道 MediaConvert 中是否有可以更正时间戳的配置？
➜ Downloads ffmpeg -i 2254.webm -hide_banner -f null /dev/null
[h264 @ 0x7fce2c81d400] Increasing reorder buffer to 1
Input #0,mov,mp4,m4a,3gp,3g2,mj2,from '2254.webm':
Metadata:
major_brand : iso5
minor_version : 1
compatible_brands: isomiso5hlsf
creation_time : 2021-02-17T19:33:56.000000Z
Duration: 00:00:01.60,start: 0.000000,bitrate: 5535 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661),yuvj420p(pc),1280x720,5644 kb/s,27.95 fps,29.92 tbr,600 tbn,1200 tbc (default)
Metadata:
rotate : 90
creation_time : 2021-02-17T19:33:56.000000Z
handler_name : Core Media Video
Side data:
displaymatrix: rotation of -90.00 degrees
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D),44100 Hz,mono,fltp,187 kb/s (default)
Metadata:
creation_time : 2021-02-17T19:33:56.000000Z
handler_name : Core Media Audio
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native))
Stream #0:1 -> #0:1 (aac (native) -> pcm_s16le (native))
Press [q] to stop,[?] for help
Output #0,null,to '/dev/null':
Metadata:
major_brand : iso5
minor_version : 1
compatible_brands: isomiso5hlsf
encoder : Lavf58.45.100
Stream #0:0(und): Video: wrapped_avframe,yuvj420p(progressive),720x1280,q=2-31,200 kb/s,29.92 fps,29.92 tbn,29.92 tbc (default)
Metadata:
encoder : Lavc58.91.100 wrapped_avframe
creation_time : 2021-02-17T19:33:56.000000Z
handler_name : Core Media Video
Side data:
displaymatrix: rotation of -0.00 degrees
Stream #0:1(und): Audio: pcm_s16le,s16,705 kb/s (default)
Metadata:
creation_time : 2021-02-17T19:33:56.000000Z
handler_name : Core Media Audio
encoder : Lavc58.91.100 pcm_s16le
[null @ 0x7fce2e008200] Application provided invalid,non monotonically increasing dts to muxer in stream 0: 8 >= 8
[null @ 0x7fce2e008200] Application provided invalid,non monotonically increasing dts to muxer in stream 0: 31 >= 31
frame= 41 fps=0.0 q=-0.0 Lsize=N/A time=00:00:01.57 bitrate=N/A speed=19.9x
video:21kB audio:128kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unkNown
解决方法
此时 MediaConvert 需要一个完整的、带时间戳的正确文件。无法在服务中的 demux 处更改 DTS 或 PTS 值。
在将该文件传递给 MediaConvert 时，您是否能够仅使用 ffmpeg 重新混合并获得相同的结果？
ffmpeg -i 2254.webm -c copy output.webm