我用 mp4box 合并视频。合并的视频损坏了。第一个视频正确，但其他视频损坏了。声音正常，视频损坏了。我懂的英文不多 :) 抱歉... MP4Box 合并代码：
MP4Box -force-cat -cat 1.mp4 -cat 2.mp4 -cat 3.mp4 out.mp4
Out.mp4 下载关联
1.mp4
General
Complete name : 1.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 229 MiB
Duration : 15mn 0s
Overall bit rate : 2 136 Kbps
Movie name :
Writing application : Lavf54.63.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 15mn 0s
Bit rate : 2 000 Kbps
Width : 1 280 pixels
Height : 692 pixels
Display aspect ratio : 1.85:1
Frame rate mode : Constant
Frame rate : 24.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.094
Stream size : 214 MiB (94%)
Writing library : x264 core 129 r2245 bc13772
Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / ana lyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_ range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_ps kip=1 / chroma_qp_offset=-2 / threads=8 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bf rames=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_l ookahead=50 / rc=2pass / mbtree=1 / bitrate=2000 / ratetol=1.0 / qcomp=0.60 / qp min=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1 .00
Language : Turkish
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 15mn 0s
Bit rate mode : Constant
Bit rate : 132 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : 83ms
Stream size : 14.1 MiB (6%)
Language : Turkish
2.mp4
General
Complete name : 2.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 7.58 MiB
Duration : 30s 38ms
Overall bit rate : 2 116 Kbps
Movie name :
Writing application : Lavf54.63.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 30s 0ms
Bit rate : 2 000 Kbps
Width : 1 280 pixels
Height : 692 pixels
Display aspect ratio : 1.85:1
Frame rate mode : Constant
Frame rate : 24.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.094
Stream size : 7.10 MiB (94%)
Writing library : x264 core 129 r2245 bc13772
Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=abr / mbtree=1 / bitrate=2000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Language : Turkish
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 30s 38ms
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : 83ms
Stream size : 470 KiB (6%)
Language : Turkish
3.mp4
General
Complete name : 3.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 229 MiB
Duration : 15mn 0s
Overall bit rate : 2 138 Kbps
Movie name :
Writing application : Lavf54.63.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 15mn 0s
Bit rate : 2 000 Kbps
Width : 1 280 pixels
Height : 692 pixels
Display aspect ratio : 1.85:1
Frame rate mode : Constant
Frame rate : 24.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.094
Stream size : 215 MiB (94%)
Writing library : x264 core 129 r2245 bc13772
Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=8 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=2pass / mbtree=1 / bitrate=2000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Language : Turkish
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 15mn 0s
Bit rate mode : Constant
Bit rate : 132 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : 83ms
Stream size : 14.2 MiB (6%)
Language : Turkish
出局.mp4
General
Complete name : out.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 466 MiB
Duration : 45mn 30s
Overall bit rate : 1 431 Kbps
Encoded date : UTC 2013-03-07 23:34:33
Tagged date : UTC 2013-03-07 23:34:33
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 45mn 30s
Source duration : 30mn 30s
Nominal bit rate : 2 000 Kbps
Width : 1 280 pixels
Height : 692 pixels
Display aspect ratio : 1.85:1
Frame rate mode : Constant
Frame rate : 24.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.094
Source stream size : 436 MiB (94%)
Writing library : x264 core 129 r2245 bc13772
Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=8 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=2pass / mbtree=1 / bitrate=2000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Language : Turkish
Tagged date : UTC 2013-03-07 23:34:34
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 45mn 30s
Source duration : 30mn 30s
Bit rate mode : Constant
Nominal bit rate : 132 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Source stream size : 28.7 MiB (6%)
Language : Turkish
Tagged date : UTC 2013-03-07 23:34:34
ffmpeg -i 输出.mp4
ffmpeg version N-50345-g50c2738-syslint Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 27 2013 17:02:21 with gcc 4.4.6 (GCC) 20120305 (Red Hat 4.4.6-4)
configuration: --prefix=/usr/local/cpffmpeg --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libopencore-amrnb --enable-decoder=liba52 --enable-libopencore-amrwb --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --extra-cflags=-I/usr/local/cpffmpeg/include/ --extra-ldflags=-L/usr/local/cpffmpeg/lib --enable-filter=drawtext --enable-libfreetype --enable-version3 --extra-version=syslint
libavutil 52. 17.103 / 52. 17.103
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.100 / 54. 63.100
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 41.100 / 3. 41.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
**[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17b6a20] multiple edit list entries, a/v desync might occur, patch welcome**
Last message repeated 1 times
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mp4':
Metadata:
major_brand : isom
minor_version : 1
compatible_brands: isom
creation_time : 2013-03-07 23:34:33
Duration: 00:45:30.05, start: 0.009333, bitrate: 1431 kb/s
Stream #0:0(tur): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x692 [SAR 1:1 DAR 320:173], 1999 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc
Metadata:
handler_name : VideoHandler
Stream #0:1(tur): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 131 kb/s
Metadata:
handler_name : SoundHandler
At least one output file must be specified
//解决问题
问题：2-pass 编码。mp4box 不支持 2-pass。
答案1
我建议您使用媒体转换器中的“视频到视频”将每个文件单独翻录到完全相同的输出设置。输入文件是否采用不同的编解码器/格式/容器（如 avi、mkv、mp4、m4v 等）并不重要。视频到视频可以处理不同的输入格式，以实现恒定的输出格式，而不会出现任何问题。
只要输出格式相同，输出格式是什么都无所谓。然后只需使用 mkvmerge 将它们附加即可。应该很顺利。