MP4Box不连接视频

我有MP4Box的问题，无法连接一个视频中的视频。我得到out.mp4文件（〜103 MB），但omplayer无法播放它。我有6个非常简单的.mp4视频，我希望它们合并成一个视频。到现在为止，我能做到这一点与命令，没有任何问题：MP4Box不连接视频

MP4Box -cat Awards\ -\ Recognitions\ Screens\ Video.mp4 -cat Cornaro\ USLUGE\ video1.mp4 -cat Cornaro\ USLUGE\ video1.mp4 -cat DIOCLETIANS_BREAKFAST.mp4 -cat FLAVOURS_OF_DALMATIA.mp4 -cat Prognoza.mp4 -cat Restaurants\ -\ Bars\ 2016.mp4 -cat WineHappyHour3.mp4 -new out.mp4

但现在omxplayer（也VLC）不能玩out.mp4视频。这里的MediaInfo输出每6的一个视频：

General 
Complete name       : Awards - Recognitions Screens Video.mp4 
Format         : MPEG-4 
Format profile       : Base Media 
Codec ID         : isom 
File size        : 16.8 MiB 
Duration         : 45s 379ms 
Overall bit rate       : 3 114 Kbps 
Writing application      : Lavf55.33.101 

Video 
ID          : 1 
Format         : AVC 
Format/Info        : Advanced Video Codec 
Format profile       : [email protected] 
Format settings, CABAC     : Yes 
Format settings, ReFrames    : 3 frames 
Codec ID         : avc1 
Codec ID/Info       : Advanced Video Coding 
Duration         : 45s 379ms 
Bit rate         : 3 000 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Constant 
Frame rate        : 29.970 fps 
Color space        : YUV 
Chroma subsampling      : 4:2:0 
Bit depth        : 8 bits 
Scan type        : Progressive 
Bits/(Pixel*Frame)      : 0.048 
Stream size        : 16.8 MiB (100%) 
Writing library       : x264 core 142 r2389 956c8d8 
Encoding settings      : cabac=1/ref=1/deblock=1:0:0/analyse=0x1:0/me=dia/subme=2/psy=1/psy_rd=1.00:0.00/mixed_ref=0/me_range=16/chroma_me=1/trellis=0/8x8dct=0/cqm=0/deadzone=21,11/fast_pskip=1/chroma_qp_offset=0/threads=6/lookahead_threads=2/sliced_threads=0/nr=0/decimate=1/interlaced=0/bluray_compat=0/constrained_intra=0/bframes=3/b_pyramid=1/b_adapt=1/b_bias=0/direct=1/weightb=1/open_gop=0/weightp=2/keyint=250/keyint_min=25/scenecut=40/intra_refresh=0/rc_lookahead=40/rc=abr/mbtree=1/bitrate=3000/ratetol=1.0/qcomp=0.60/qpmin=0/qpmax=69/qpstep=4/ip_ratio=1.40/aq=1:1.00 
Language         : English 



General 
Complete name       : Cornaro USLUGE video1.mp4 
Format         : MPEG-4 
Format profile       : Base Media 
Codec ID         : isom 
File size        : 22.8 MiB 
Duration         : 1mn 13s 
Overall bit rate       : 2 624 Kbps 
Writing application      : Lavf55.33.101 

Video 
ID          : 1 
Format         : AVC 
Format/Info        : Advanced Video Codec 
Format profile       : [email protected] 
Format settings, CABAC     : Yes 
Format settings, ReFrames    : 3 frames 
Codec ID         : avc1 
Codec ID/Info       : Advanced Video Coding 
Duration         : 1mn 13s 
Bit rate         : 2 621 Kbps 
Nominal bit rate       : 3 000 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Constant 
Frame rate        : 29.970 fps 
Color space        : YUV 
Chroma subsampling      : 4:2:0 
Bit depth        : 8 bits 
Scan type        : Progressive 
Bits/(Pixel*Frame)      : 0.042 
Stream size        : 22.8 MiB (100%) 
Writing library       : x264 core 142 r2389 956c8d8 
Encoding settings      : cabac=1/ref=1/deblock=1:0:0/analyse=0x1:0/me=dia/subme=2/psy=1/psy_rd=1.00:0.00/mixed_ref=0/me_range=16/chroma_me=1/trellis=0/8x8dct=0/cqm=0/deadzone=21,11/fast_pskip=1/chroma_qp_offset=0/threads=6/lookahead_threads=2/sliced_threads=0/nr=0/decimate=1/interlaced=0/bluray_compat=0/constrained_intra=0/bframes=3/b_pyramid=1/b_adapt=1/b_bias=0/direct=1/weightb=1/open_gop=0/weightp=2/keyint=250/keyint_min=25/scenecut=40/intra_refresh=0/rc_lookahead=40/rc=abr/mbtree=1/bitrate=3000/ratetol=1.0/qcomp=0.60/qpmin=0/qpmax=69/qpstep=4/ip_ratio=1.40/aq=1:1.00 
Language         : English 



General 
Complete name       : DIOCLETIANS_BREAKFAST.mp4 
Format         : MPEG-4 
Format profile       : Base Media 
Codec ID         : isom 
File size        : 11.6 MiB 
Duration         : 33s 0ms 
Overall bit rate       : 2 950 Kbps 
Writing application      : Lavf55.33.101 

Video 
ID          : 1 
Format         : AVC 
Format/Info        : Advanced Video Codec 
Format profile       : [email protected] 
Format settings, CABAC     : Yes 
Format settings, ReFrames    : 3 frames 
Codec ID         : avc1 
Codec ID/Info       : Advanced Video Coding 
Duration         : 33s 0ms 
Bit rate         : 3 000 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Constant 
Frame rate        : 29.970 fps 
Color space        : YUV 
Chroma subsampling      : 4:2:0 
Bit depth        : 8 bits 
Scan type        : Progressive 
Bits/(Pixel*Frame)      : 0.048 
Stream size        : 11.6 MiB (100%) 
Writing library       : x264 core 142 r2389 956c8d8 
Encoding settings      : cabac=1/ref=1/deblock=1:0:0/analyse=0x1:0/me=dia/subme=2/psy=1/psy_rd=1.00:0.00/mixed_ref=0/me_range=16/chroma_me=1/trellis=0/8x8dct=0/cqm=0/deadzone=21,11/fast_pskip=1/chroma_qp_offset=0/threads=6/lookahead_threads=2/sliced_threads=0/nr=0/decimate=1/interlaced=0/bluray_compat=0/constrained_intra=0/bframes=3/b_pyramid=1/b_adapt=1/b_bias=0/direct=1/weightb=1/open_gop=0/weightp=2/keyint=250/keyint_min=25/scenecut=40/intra_refresh=0/rc_lookahead=40/rc=abr/mbtree=1/bitrate=3000/ratetol=1.0/qcomp=0.60/qpmin=0/qpmax=69/qpstep=4/ip_ratio=1.40/aq=1:1.00 
Language         : English 



General 
Complete name       : FLAVOURS_OF_DALMATIA.mp4 
Format         : MPEG-4 
Format profile       : Base Media 
Codec ID         : isom 
File size        : 11.4 MiB 
Duration         : 33s 0ms 
Overall bit rate       : 2 891 Kbps 
Writing application      : Lavf55.33.101 

Video 
ID          : 1 
Format         : AVC 
Format/Info        : Advanced Video Codec 
Format profile       : [email protected] 
Format settings, CABAC     : Yes 
Format settings, ReFrames    : 3 frames 
Codec ID         : avc1 
Codec ID/Info       : Advanced Video Coding 
Duration         : 33s 0ms 
Bit rate         : 3 000 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Constant 
Frame rate        : 29.970 fps 
Color space        : YUV 
Chroma subsampling      : 4:2:0 
Bit depth        : 8 bits 
Scan type        : Progressive 
Bits/(Pixel*Frame)      : 0.048 
Stream size        : 11.4 MiB (100%) 
Writing library       : x264 core 142 r2389 956c8d8 
Encoding settings      : cabac=1/ref=1/deblock=1:0:0/analyse=0x1:0/me=dia/subme=2/psy=1/psy_rd=1.00:0.00/mixed_ref=0/me_range=16/chroma_me=1/trellis=0/8x8dct=0/cqm=0/deadzone=21,11/fast_pskip=1/chroma_qp_offset=0/threads=6/lookahead_threads=2/sliced_threads=0/nr=0/decimate=1/interlaced=0/bluray_compat=0/constrained_intra=0/bframes=3/b_pyramid=1/b_adapt=1/b_bias=0/direct=1/weightb=1/open_gop=0/weightp=2/keyint=250/keyint_min=25/scenecut=40/intra_refresh=0/rc_lookahead=40/rc=abr/mbtree=1/bitrate=3000/ratetol=1.0/qcomp=0.60/qpmin=0/qpmax=69/qpstep=4/ip_ratio=1.40/aq=1:1.00 
Language         : English 



General 
Complete name       : Prognoza.mp4 
Format         : MPEG-4 
Format profile       : Base Media 
Codec ID         : isom 
File size        : 3.27 MiB 
Duration         : 10s 44ms 
Overall bit rate       : 2 733 Kbps 
Writing application      : Lavf55.33.101 

Video 
ID          : 1 
Format         : AVC 
Format/Info        : Advanced Video Codec 
Format profile       : [email protected] 
Format settings, CABAC     : Yes 
Format settings, ReFrames    : 3 frames 
Codec ID         : avc1 
Codec ID/Info       : Advanced Video Coding 
Duration         : 10s 44ms 
Bit rate         : 2 730 Kbps 
Nominal bit rate       : 3 000 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Constant 
Frame rate        : 29.970 fps 
Color space        : YUV 
Chroma subsampling      : 4:2:0 
Bit depth        : 8 bits 
Scan type        : Progressive 
Bits/(Pixel*Frame)      : 0.044 
Stream size        : 3.27 MiB (100%) 
Writing library       : x264 core 142 r2389 956c8d8 
Encoding settings      : cabac=1/ref=1/deblock=1:0:0/analyse=0x1:0/me=dia/subme=2/psy=1/psy_rd=1.00:0.00/mixed_ref=0/me_range=16/chroma_me=1/trellis=0/8x8dct=0/cqm=0/deadzone=21,11/fast_pskip=1/chroma_qp_offset=0/threads=6/lookahead_threads=2/sliced_threads=0/nr=0/decimate=1/interlaced=0/bluray_compat=0/constrained_intra=0/bframes=3/b_pyramid=1/b_adapt=1/b_bias=0/direct=1/weightb=1/open_gop=0/weightp=2/keyint=250/keyint_min=25/scenecut=40/intra_refresh=0/rc_lookahead=40/rc=abr/mbtree=1/bitrate=3000/ratetol=1.0/qcomp=0.60/qpmin=0/qpmax=69/qpstep=4/ip_ratio=1.40/aq=1:1.00 
Language         : English` 



General 
Complete name       : Restaurants - Bars 2016.mp4 
Format         : MPEG-4 
Format profile       : Base Media 
Codec ID         : isom 
File size        : 33.4 MiB 
Duration         : 1mn 35s 
Overall bit rate       : 2 929 Kbps 
Writing application      : Lavf55.33.101 

Video 
ID          : 1 
Format         : AVC 
Format/Info        : Advanced Video Codec 
Format profile       : [email protected] 
Format settings, CABAC     : Yes 
Format settings, ReFrames    : 3 frames 
Codec ID         : avc1 
Codec ID/Info       : Advanced Video Coding 
Duration         : 1mn 35s 
Bit rate         : 3 000 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Constant 
Frame rate        : 29.970 fps 
Color space        : YUV 
Chroma subsampling      : 4:2:0 
Bit depth        : 8 bits 
Scan type        : Progressive 
Bits/(Pixel*Frame)      : 0.048 
Stream size        : 33.4 MiB (100%) 
Writing library       : x264 core 142 r2389 956c8d8 
Encoding settings      : cabac=1/ref=1/deblock=1:0:0/analyse=0x1:0/me=dia/subme=2/psy=1/psy_rd=1.00:0.00/mixed_ref=0/me_range=16/chroma_me=1/trellis=0/8x8dct=0/cqm=0/deadzone=21,11/fast_pskip=1/chroma_qp_offset=0/threads=6/lookahead_threads=2/sliced_threads=0/nr=0/decimate=1/interlaced=0/bluray_compat=0/constrained_intra=0/bframes=3/b_pyramid=1/b_adapt=1/b_bias=0/direct=1/weightb=1/open_gop=0/weightp=2/keyint=250/keyint_min=25/scenecut=40/intra_refresh=0/rc_lookahead=40/rc=abr/mbtree=1/bitrate=3000/ratetol=1.0/qcomp=0.60/qpmin=0/qpmax=69/qpstep=4/ip_ratio=1.40/aq=1:1.00 
Language         : English 



General 
Complete name       : WineHappyHour3.mp4 
Format         : MPEG-4 
Format profile       : Base Media 
Codec ID         : isom 
File size        : 4.10 MiB 
Duration         : 13s 581ms 
Overall bit rate       : 2 533 Kbps 
Writing application      : Lavf55.33.101 

Video 
ID          : 1 
Format         : AVC 
Format/Info        : Advanced Video Codec 
Format profile       : [email protected] 
Format settings, CABAC     : Yes 
Format settings, ReFrames    : 3 frames 
Codec ID         : avc1 
Codec ID/Info       : Advanced Video Coding 
Duration         : 13s 581ms 
Bit rate         : 2 530 Kbps 
Nominal bit rate       : 3 000 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Constant 
Frame rate        : 29.970 fps 
Color space        : YUV 
Chroma subsampling      : 4:2:0 
Bit depth        : 8 bits 
Scan type        : Progressive 
Bits/(Pixel*Frame)      : 0.041 
Stream size        : 4.10 MiB (100%) 
Writing library       : x264 core 142 r2389 956c8d8 
Encoding settings      : cabac=1/ref=1/deblock=1:0:0/analyse=0x1:0/me=dia/subme=2/psy=1/psy_rd=1.00:0.00/mixed_ref=0/me_range=16/chroma_me=1/trellis=0/8x8dct=0/cqm=0/deadzone=21,11/fast_pskip=1/chroma_qp_offset=0/threads=6/lookahead_threads=2/sliced_threads=0/nr=0/decimate=1/interlaced=0/bluray_compat=0/constrained_intra=0/bframes=3/b_pyramid=1/b_adapt=1/b_bias=0/direct=1/weightb=1/open_gop=0/weightp=2/keyint=250/keyint_min=25/scenecut=40/intra_refresh=0/rc_lookahead=40/rc=abr/mbtree=1/bitrate=3000/ratetol=1.0/qcomp=0.60/qpmin=0/qpmax=69/qpstep=4/ip_ratio=1.40/aq=1:1.00 
Language         : English

因此，所有的6个视频有很好的MediaInfo输出，但anways我尝试执行命令测试没有1个视频（一个接一个），然后将它们合并，但相同结果。我得到奇怪的命令行输出，当我执行命令mp4box：

Appending file Awards - Recognitions Screens Video.mp4 
No suitable destination track found - creating new one (type vide) 
Appending file Cornaro USLUGE video1.mp4   
Appending file Cornaro USLUGE video1.mp4   
No suitable destination track found - creating new one (type vide) 
Appending file DIOCLETIANS_BREAKFAST.mp4   
Appending file FLAVOURS_OF_DALMATIA.mp4   
Appending file Prognoza.mp4      
Appending file Restaurants - Bars 2016.mp4  
No suitable destination track found - creating new one (type vide) 
Appending file WineHappyHour3.mp4     
Saving out.mp4: 0.500 secs Interleaving

这里的MediaInfo为out.mp4视频：

General 
Complete name       : out.mp4 
Format         : MPEG-4 
Format profile       : Base Media 
Codec ID         : isom 
File size        : 126 MiB 
Duration         : 4mn 50s 
Overall bit rate       : 3 651 Kbps 
Encoded date        : UTC 2016-06-10 15:32:13 
Tagged date        : UTC 2016-06-10 15:32:13 

Video #1 
ID          : 1 
Format         : avc3 
Codec ID         : avc3 
Duration         : 1mn 58s 
Bit rate         : 2 809 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Constant 
Frame rate        : 29.970 fps 
Bits/(Pixel*Frame)      : 0.045 
Stream size        : 39.6 MiB (31%) 
Language         : English 
Tagged date        : UTC 2016-06-10 15:32:15 

Video #2 
ID          : 2 
Format         : AVC 
Format/Info        : Advanced Video Codec 
Format profile       : [email protected] 
Format settings, CABAC     : Yes 
Format settings, ReFrames    : 3 frames 
Codec ID         : avc1 
Codec ID/Info       : Advanced Video Coding 
Duration         : 4mn 41s 
Source duration       : 3mn 28s 
Bit rate         : 2 143 Kbps 
Nominal bit rate       : 3 000 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Variable 
Frame rate        : 23.432 fps 
Minimum frame rate      : 0.022 fps 
Maximum frame rate      : 29.970 fps 
Color space        : YUV 
Chroma subsampling      : 4:2:0 
Bit depth        : 8 bits 
Scan type        : Progressive 
Bits/(Pixel*Frame)      : 0.044 
Stream size        : 53.1 MiB (42%) 
Source stream size      : 53.1 MiB (42%) 
Writing library       : x264 core 142 r2389 956c8d8 
Encoding settings      : cabac=1/ref=1/deblock=1:0:0/analyse=0x1:0/me=dia/subme=2/psy=1/psy_rd=1.00:0.00/mixed_ref=0/me_range=16/chroma_me=1/trellis=0/8x8dct=0/cqm=0/deadzone=21,11/fast_pskip=1/chroma_qp_offset=0/threads=6/lookahead_threads=2/sliced_threads=0/nr=0/decimate=1/interlaced=0/bluray_compat=0/constrained_intra=0/bframes=3/b_pyramid=1/b_adapt=1/b_bias=0/direct=1/weightb=1/open_gop=0/weightp=2/keyint=250/keyint_min=25/scenecut=40/intra_refresh=0/rc_lookahead=40/rc=abr/mbtree=1/bitrate=3000/ratetol=1.0/qcomp=0.60/qpmin=0/qpmax=69/qpstep=4/ip_ratio=1.40/aq=1:1.00 
Language         : English 
Tagged date        : UTC 2016-06-10 15:32:15 

Video #3 
ID          : 3 
Format         : AVC 
Format/Info        : Advanced Video Codec 
Format profile       : [email protected] 
Format settings, CABAC     : Yes 
Format settings, ReFrames    : 3 frames 
Codec ID         : avc1 
Codec ID/Info       : Advanced Video Coding 
Duration         : 4mn 50s 
Source duration       : 1mn 35s 
Nominal bit rate       : 3 000 Kbps 
Width         : 1 920 pixels 
Height         : 1 080 pixels 
Display aspect ratio      : 16:9 
Frame rate mode       : Constant 
Frame rate        : 29.970 fps 
Color space        : YUV 
Chroma subsampling      : 4:2:0 
Bit depth        : 8 bits 
Scan type        : Progressive 
Bits/(Pixel*Frame)      : 0.048 
Source stream size      : 33.4 MiB (26%) 
Writing library       : x264 core 142 r2389 956c8d8 
Encoding settings      : cabac=1/ref=1/deblock=1:0:0/analyse=0x1:0/me=dia/subme=2/psy=1/psy_rd=1.00:0.00/mixed_ref=0/me_range=16/chroma_me=1/trellis=0/8x8dct=0/cqm=0/deadzone=21,11/fast_pskip=1/chroma_qp_offset=0/threads=6/lookahead_threads=2/sliced_threads=0/nr=0/decimate=1/interlaced=0/bluray_compat=0/constrained_intra=0/bframes=3/b_pyramid=1/b_adapt=1/b_bias=0/direct=1/weightb=1/open_gop=0/weightp=2/keyint=250/keyint_min=25/scenecut=40/intra_refresh=0/rc_lookahead=40/rc=abr/mbtree=1/bitrate=3000/ratetol=1.0/qcomp=0.60/qpmin=0/qpmax=69/qpstep=4/ip_ratio=1.40/aq=1:1.00 
Language         : English 
Tagged date        : UTC 2016-06-10 15:32:15

正如你可以看到正好有“＃”部分视频为“无找到合适的目的地轨道......“线路，这很奇怪。到目前为止，用于固定我的问题最接近的事情是这样的命令：

MP4Box -force-cat -add Awards\ -\ Recognitions\ Screens\ Video.mp4 -cat Cornaro\ USLUGE\ video1.mp4 -cat Cornaro\ USLUGE\ video1.mp4 -cat DIOCLETIANS_BREAKFAST.mp4 -cat FLAVOURS_OF_DALMATIA.mp4 -cat Prognoza.mp4 -cat Restaurants\ -\ Bars\ 2016.mp4 -cat WineHappyHour3.mp4 out.mp4

却是露出秒的视频（尔纳罗USLUGE video1.mp4）在连续两次，然后剩下的就是正常的。我真的不知道该怎么做。任何帮助将不胜感激。

来源

2016-06-10 Teemo

感谢您的帮助，但我需要使用MP4Box来合并视频而不是ffmpeg，因为我的RPi3上只安装了MP4Box。不管怎么说，改变命令，可以确认该作品般的魅力（即使视频丢失PAR PARAM信息）：

MP4Box -force-cat -cat Awards\ -\ Recognitions\ Screens\ Video.mp4 -cat Cornaro\ USLUGE\ video1.mp4 -cat Cornaro\ USLUGE\ video1.mp4 -cat DIOCLETIANS_BREAKFAST.mp4 -cat FLAVOURS_OF_DALMATIA.mp4 -cat Prognoza.mp4 -cat Restaurants\ -\ Bars\ 2016.mp4 -cat WineHappyHour3.mp4 output.mp4

来源

2016-06-13 12:47:35 Teemo

要知道，由于某种原因，输出视频不会与--loop环PARAM。 – Teemo

这是https://github.com/gpac/gpac/issues/549的副本，其中回答如下：FFmpeg有时会在SPS中添加PAR可选字段。因此MP4Box检测到不同的SPS并且不能合并。

目前仍在讨论GPAC是否应该能够将此更改作为解决方法进行检测。请在根本问题上发表意见：https://github.com/gpac/gpac/issues/13。

NB @IncBrain：bs-switching是DASH的功能，而不是MP4。

来源

2016-06-11 06:28:48

好知道TNX – incBrain

您还可以使用ffmpeg来连接你的MP4文件，如描述here：

首先你要转码视频，MPEG2-TS这样的：

ffmpeg -i vid1.mp4 -c:v copy -bsf:v h264_mp4toannexb -f mpegts inter1.ts 
ffmpeg -i vid2.mp4 -c:v copy -bsf:v h264_mp4toannexb -f mpegts inter2.ts 
ffmpeg -i vid3.mp4 -c:v copy -bsf:v h264_mp4toannexb -f mpegts inter3.ts 
...

然后用它们连接起来：

ffmpeg -i "concat:inter1.ts|inter2.ts|inter3.ts" -c copy out.mp4

我测试了它与your videos（你发布在github上的链接），它工作得很好。

也有可能做到这一点，而不形成使用命名管道中间.ts文件，这可能与此类似：

mkfifo temp1 temp2 
ffmpeg -i input1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts temp1 2> /dev/null & \ 
ffmpeg -i input2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts temp2 2> /dev/null & \ 
ffmpeg -f mpegts -i "concat:temp1|temp2" -c copy output.mp4

来源

2016-06-11 14:40:16 incBrain

却是露出秒的视频（尔纳罗USLUGE视频1。 mp4）两次在行

在我看来，你是从命令行两次添加它。

来源

2016-06-12 18:52:34

MP4Box不连接视频

回答

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