【已解决】[求助]roozhou请进，用ffmpeg将mkv转封为mp4出问题（内有相关信息）|『影音数码技术学习交流』 - 『漫游』酷论坛

FFmpeg version SVN-r22846, Copyright (c) 2000-2010 the FFmpeg developers
built on Apr 13 2010 01:55:43 with gcc 4.4.1
configuration:
libavutil 50.14. 0 / 50.14. 0
libavcodec 52.66. 0 / 52.66. 0
libavformat 52.61. 0 / 52.61. 0
libavdevice 52. 2. 0 / 52. 2. 0
libswscale 0.10. 0 / 0.10. 0
[matroska @ 0x27af40]max_analyze_duration reached
[matroska @ 0x27af40]Estimating duration from bitrate, this may be inaccurate

Seems stream 0 codec frame rate differs from container frame rate: 47.95 (48000/1001) -> 23.98 (48000/2002)
Input #0, matroska, from 'E:\1.mkv':
Duration: 00:01:29.88, start: 0.000000, bitrate: N/A
Stream #0.0(jpn): Video: h264, yuv420p, 1280x720, PAR 1:1 DAR 16:9, 23.98 tbr, 1k tbn, 47.95 tbc
Metadata:
title : 视频
Stream #0.1(jpn): Audio: aac, 48000 Hz, stereo, s16
Metadata:
title : 日语音轨
Stream #0.2(chi): Subtitle: 0x0000
Metadata:
title : 简体中文ASS字幕
Stream #0.3(chi): Subtitle: 0x0000
Metadata:
title : 繁体中文ASS字幕
Output #0, mp4, to 'E:\2.mp4':
Metadata:
encoder : Lavf52.61.0
Stream #0.0(jpn): Video: 0x0021, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], q=0-0, 48k tbn, 23.98 tbc
Metadata:
title : 视频
Stream #0.1(jpn): Audio: 0x0040, 48000 Hz, stereo
Metadata:
title : 日语音轨
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Press [q] to stop encoding
[mp4 @ 0x1040050]st:1 error, non monotone timestamps 288 >= 288
[mp4 @ 0x1040050]st:1 error, pts < dts
av_interleaved_write_frame(): Error number -1 occurred

FFmpeg version SVN-r22140-Sherpya, Copyright (c) 2000-2010 the FFmpeg developers
built on Mar 2 2010 03:26:44 with gcc 4.2.5 20080919 (prerelease) [Sherpya]
libavutil 50. 9. 0 / 50. 9. 0
libavcodec 52.55. 0 / 52.55. 0
libavformat 52.54. 0 / 52.54. 0
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.17. 0 / 1.17. 0
libswscale 0.10. 0 / 0.10. 0
libpostproc 51. 2. 0 / 51. 2. 0
[matroska @ 002ecc50]max_analyze_duration reached
[matroska @ 002ecc50]Estimating duration from bitrate, this may be inaccurate

Seems stream 0 codec frame rate differs from container frame rate: 47.95 (48000/1001) -> 23.98 (24000/1001)
Input #0, matroska, from 'E:\1.mkv':
Duration: 00:01:29.88, start: 0.000000, bitrate: N/A
Stream #0.0(jpn): Video: h264, yuv420p, 1280x720, PAR 1:1 DAR 16:9, 47.62 fps, 23.98 tbr, 1k tbn, 47.95 tbc
Metadata:
title : 视频
Stream #0.1(jpn): Audio: aac, 48000 Hz, stereo, s16
Metadata:
title : 日语音轨
Stream #0.2(chi): Subtitle: 0x0000
Metadata:
title : 简体中文ASS字幕
Stream #0.3(chi): Subtitle: 0x0000
Metadata:
title : 繁体中文ASS字幕
Output #0, mp4, to 'E:\1.mp4':
Metadata:
encoder : Lavf52.54.0
Stream #0.0(jpn): Video: libx264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], q=2-31, 48k tbn, 23.98 tbc
Metadata:
title : 视频
Stream #0.1(jpn): Audio: aac, 48000 Hz, stereo
Metadata:
title : 日语音轨
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Press [q] to stop encoding
frame= 741 fps= 0 q=-1.0 size= 10495kB time=30.82 bitrate=2789.4kbits/s
frame= 1441 fps=1400 q=-1.0 size= 21163kB time=60.02 bitrate=2888.6kbits/s
frame= 2096 fps=1357 q=-1.0 size= 32180kB time=87.34 bitrate=3018.4kbits/s
frame= 2155 fps=1368 q=-1.0 Lsize= 32855kB time=89.80 bitrate=2997.2kbits/s

video:31032kB audio:1737kB global headers:0kB muxing overhead 0.259217%

General
Complete name : E:\1.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 32.1 MiB
Duration : 1mn 29s
Overall bit rate : 2 995 Kbps
Writing application : Lavf52.54.0

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 6 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1mn 29s
Bit rate mode : Variable
Bit rate : 2 831 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 24.000 fps
Minimum frame rate : 23.810 fps
Maximum frame rate : 47.952 fps
Original frame rate : 23.976 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.128
Stream size : 30.3 MiB (94%)
Language : Japanese

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : 40
Duration : 1mn 29s
Bit rate mode : Variable
Bit rate : 158 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Resolution : 16 bits
Stream size : 1.70 MiB (5%)
Language : Japanese

最初由 x265 发布
把x.mkv 改为.mp4
ok?

最初由 roozhou 发布
官方版出来的文件在很多播放器是播放不能的

能不能用mmg切一段，如果用ffmpeg封装还是出错的话可以上传让我分析一下。当然如果源文件不是太大的话整体上传（或给出下载地址）也可以。

最初由 roozhou 发布
这个mkv的问题出在音频上，估计和那个video delay 6ms有关系。第一帧的时间戳不是0而且前两帧的时间戳是一样的。我可以让ffmpeg忽略音频轨里的这种错误，出来的音轨也能正常播放。

Edit: 我找了其他有delay的音轨，并没有前两帧时间戳相等的情况，可以认为这个文件本身存在错误。下个版本里我会尽可能的忽略音轨里的时间戳问题，不过依然会打印出错误信息。

最初由 upyzl 发布

麻烦了；期待新编译版
我才发现那个能封装的ffmpeg把所有视频都一律强制弄成24fps了……