了解创建 mp4 时使用的 ffmpeg 设置

了解创建 mp4 时使用的 ffmpeg 设置

我几乎 99% 确定这是一个特别无用的问题。如您所见,编解码器信息和它们是相同的。左侧的信息不起作用,当与 whatsapp 共享时,右侧的版本起作用。它们来自同一个父文件,据我所知,是用同一个脚本制作的。但脚本中添加了一些选项,脚本的输出是:

ffmpeg  -i some.mp4 -s 1980x1080 -c:a copy sd.mp4

这里的最终目的是创建不大于 64mb 的文件,然后能够与朋友分享。

这是一张毫无用处的图片,展示了 whatsapp 中的“broken.mp4”文件的样子: 在此处输入图片描述

在此处输入图片描述

破碎的

General
Count                                    : 331
Count of stream of this kind             : 1
Kind of stream                           : General
Kind of stream                           : General
Stream identifier                        : 0
Count of video streams                   : 1
Count of audio streams                   : 1
OtherCount                               : 1
Video_Format_List                        : AVC
Video_Format_WithHint_List               : AVC
Codecs Video                             : AVC
Video_Language_List                      : English
Audio_Format_List                        : AAC LC
Audio_Format_WithHint_List               : AAC LC
Audio codecs                             : AAC LC
Audio_Language_List                      : English
Other_Format_List                        : QuickTime TC
Other_Format_WithHint_List               : QuickTime TC
Other_Codec_List                         : QuickTime TC
Other_Language_List                      : English
Complete name                            : broken.mp4
File name extension                      : broken.mp4
File name                                : broken
File extension                           : mp4
Format                                   : MPEG-4
Format                                   : MPEG-4
Format/Extensions usually used           : braw mov mp4 m4v m4a m4b m4p m4r 3ga 3gpa 3gpp 3gp 3gpp2 3g2 k3g jpm jpx mqv ismv isma ismt f4a f4b f4v
Commercial name                          : MPEG-4
Format profile                           : Base Media
Internet media type                      : video/mp4
Codec ID                                 : isom
Codec ID                                 : isom (isom/iso2/avc1/mp41)
Codec ID/Url                             : http://www.apple.com/quicktime/download/standalone.html
CodecID_Compatible                       : isom/iso2/avc1/mp41
File size                                : 24580128
File size                                : 23.4 MiB
File size                                : 23 MiB
File size                                : 23 MiB
File size                                : 23.4 MiB
File size                                : 23.44 MiB
Duration                                 : 20571
Duration                                 : 20 s 571 ms
Duration                                 : 20 s 571 ms
Duration                                 : 20 s 571 ms
Duration                                 : 00:00:20.571
Duration                                 : 00:00:20:33
Duration                                 : 00:00:20.571 (00:00:20:33)
Overall bit rate                         : 9559138
Overall bit rate                         : 9 559 kb/s
Frame rate                               : 59.940
Frame rate                               : 59.940 FPS
Frame count                              : 1233
Stream size                              : 34626
Stream size                              : 33.8 KiB (0%)
Stream size                              : 34 KiB
Stream size                              : 34 KiB
Stream size                              : 33.8 KiB
Stream size                              : 33.81 KiB
Stream size                              : 33.8 KiB (0%)
Proportion of this stream                : 0.00141
HeaderSize                               : 40
DataSize                                 : 24545514
FooterSize                               : 34574
IsStreamable                             : No
File last modification date              : UTC 2022-04-25 21:12:20
File last modification date (local)      : 2022-04-25 22:12:20
Writing application                      : Lavf58.29.100
Writing application                      : Lavf58.29.100

Video
Count                                    : 378
Count of stream of this kind             : 1
Kind of stream                           : Video
Kind of stream                           : Video
Stream identifier                        : 0
StreamOrder                              : 0
ID                                       : 1
ID                                       : 1
Format                                   : AVC
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format/Url                               : http://developers.videolan.org/x264.html
Commercial name                          : AVC
Format profile                           : [email protected]
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 4
Format settings, Reference frames        : 4 frames
Internet media type                      : video/H264
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 20571
Duration                                 : 20 s 571 ms
Duration                                 : 20 s 571 ms
Duration                                 : 20 s 571 ms
Duration                                 : 00:00:20.571
Duration                                 : 00:00:20:33
Duration                                 : 00:00:20.571 (00:00:20:33)
Bit rate                                 : 9356655
Bit rate                                 : 9 357 kb/s
Width                                    : 1980
Width                                    : 1 980 pixels
Height                                   : 1080
Height                                   : 1 080 pixels
Stored_Width                             : 1984
Stored_Height                            : 1088
Sampled_Width                            : 1980
Sampled_Height                           : 1080
Pixel aspect ratio                       : 0.970
Display aspect ratio                     : 1.778
Display aspect ratio                     : 16:9
Rotation                                 : 0.000
Frame rate mode                          : CFR
Frame rate mode                          : Constant
FrameRate_Mode_Original                  : VFR
Frame rate                               : 59.940
Frame rate                               : 59.940 (60000/1001) FPS
FrameRate_Num                            : 60000
FrameRate_Den                            : 1001
Frame count                              : 1233
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Chroma subsampling                       : 4:2:0
Bit depth                                : 8
Bit depth                                : 8 bits
Scan type                                : Progressive
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.073
Delay                                    : 48786850
Delay                                    : 13 h 33 min
Delay                                    : 13 h 33 min 6 s 850 ms
Delay                                    : 13 h 33 min
Delay                                    : 13:33:06.850
Delay_Settings                           : DropFrame=No / 24HourMax=No / IsVisual=No
Delay_DropFrame                          : No
Delay, origin                            : Container
Delay, origin                            : Container
Stream size                              : 24058967
Stream size                              : 22.9 MiB (98%)
Stream size                              : 23 MiB
Stream size                              : 23 MiB
Stream size                              : 22.9 MiB
Stream size                              : 22.94 MiB
Stream size                              : 22.9 MiB (98%)
Proportion of this stream                : 0.97880
Title                                    : GoPro H.265
Writing library                          : x264 - core 155 r2917 0a84d98
Writing library                          : x264 core 155 r2917 0a84d98
Encoded_Library_Name                     : x264
Encoded_Library_Version                  : core 155 r2917 0a84d98
Encoding settings                        : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / 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=34 / lookahead_threads=5 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / 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=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Language                                 : en
Language                                 : English
Language                                 : English
Language                                 : en
Language                                 : eng
Language                                 : en
Color range                              : Full
colour_range_Source                      : Stream
Codec configuration box                  : avcC

Audio
Count                                    : 280
Count of stream of this kind             : 1
Kind of stream                           : Audio
Kind of stream                           : Audio
Stream identifier                        : 0
StreamOrder                              : 1
ID                                       : 2
ID                                       : 2
Format                                   : AAC
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Commercial name                          : AAC
Format_AdditionalFeatures                : LC
Codec ID                                 : mp4a-40-2
Duration                                 : 20566
Duration                                 : 20 s 566 ms
Duration                                 : 20 s 566 ms
Duration                                 : 20 s 566 ms
Duration                                 : 00:00:20.566
Duration                                 : 00:00:20:24
Duration                                 : 00:00:20.566 (00:00:20:24)
Bit rate mode                            : CBR
Bit rate mode                            : Constant
Bit rate                                 : 192000
Bit rate                                 : 192 kb/s
Channel(s)                               : 2
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Channel positions                        : 2/0/0
Channel layout                           : L R
Samples per frame                        : 1024
Sampling rate                            : 48000
Sampling rate                            : 48.0 kHz
Samples count                            : 987168
Frame rate                               : 46.875
Frame rate                               : 46.875 FPS (1024 SPF)
Frame count                              : 964
Compression mode                         : Lossy
Compression mode                         : Lossy
Delay                                    : 48786850
Delay                                    : 13 h 33 min
Delay                                    : 13 h 33 min 6 s 850 ms
Delay                                    : 13 h 33 min
Delay                                    : 13:33:06.850
Delay_DropFrame                          : No
Delay, origin                            : Container
Delay, origin                            : Container
Delay relative to video                  : 0
Delay relative to video                  : 00:00:00.000
Stream size                              : 486535
Stream size                              : 475 KiB (2%)
Stream size                              : 475 KiB
Stream size                              : 475 KiB
Stream size                              : 475 KiB
Stream size                              : 475.1 KiB
Stream size                              : 475 KiB (2%)
Proportion of this stream                : 0.01979
Title                                    : GoPro AAC  
Language                                 : en
Language                                 : English
Language                                 : English
Language                                 : en
Language                                 : eng
Language                                 : en
Default                                  : Yes
Default                                  : Yes
Alternate group                          : 1
Alternate group                          : 1

在职的

General
Count                                    : 331
Count of stream of this kind             : 1
Kind of stream                           : General
Kind of stream                           : General
Stream identifier                        : 0
Count of video streams                   : 1
Count of audio streams                   : 1
OtherCount                               : 1
Video_Format_List                        : AVC
Video_Format_WithHint_List               : AVC
Codecs Video                             : AVC
Video_Language_List                      : English
Audio_Format_List                        : AAC LC
Audio_Format_WithHint_List               : AAC LC
Audio codecs                             : AAC LC
Audio_Language_List                      : English
Other_Format_List                        : QuickTime TC
Other_Format_WithHint_List               : QuickTime TC
Other_Codec_List                         : QuickTime TC
Other_Language_List                      : English
Complete name                            : working.mp4
File name extension                      : working.mp4
File name                                : working
File extension                           : mp4
Format                                   : MPEG-4
Format                                   : MPEG-4
Format/Extensions usually used           : braw mov mp4 m4v m4a m4b m4p m4r 3ga 3gpa 3gpp 3gp 3gpp2 3g2 k3g jpm jpx mqv ismv isma ismt f4a f4b f4v
Commercial name                          : MPEG-4
Format profile                           : Base Media
Internet media type                      : video/mp4
Codec ID                                 : isom
Codec ID                                 : isom (isom/iso2/avc1/mp41)
Codec ID/Url                             : http://www.apple.com/quicktime/download/standalone.html
CodecID_Compatible                       : isom/iso2/avc1/mp41
File size                                : 29826297
File size                                : 28.4 MiB
File size                                : 28 MiB
File size                                : 28 MiB
File size                                : 28.4 MiB
File size                                : 28.44 MiB
Duration                                 : 20571
Duration                                 : 20 s 571 ms
Duration                                 : 20 s 571 ms
Duration                                 : 20 s 571 ms
Duration                                 : 00:00:20.571
Duration                                 : 00:00:20:33
Duration                                 : 00:00:20.571 (00:00:20:33)
Overall bit rate                         : 11599357
Overall bit rate                         : 11.6 Mb/s
Frame rate                               : 59.940
Frame rate                               : 59.940 FPS
Frame count                              : 1233
Stream size                              : 34626
Stream size                              : 33.8 KiB (0%)
Stream size                              : 34 KiB
Stream size                              : 34 KiB
Stream size                              : 33.8 KiB
Stream size                              : 33.81 KiB
Stream size                              : 33.8 KiB (0%)
Proportion of this stream                : 0.00116
HeaderSize                               : 40
DataSize                                 : 29791683
FooterSize                               : 34574
IsStreamable                             : No
File last modification date              : UTC 2021-10-24 18:15:02
File last modification date (local)      : 2021-10-24 19:15:02
Writing application                      : Lavf58.29.100
Writing application                      : Lavf58.29.100

Video
Count                                    : 378
Count of stream of this kind             : 1
Kind of stream                           : Video
Kind of stream                           : Video
Stream identifier                        : 0
StreamOrder                              : 0
ID                                       : 1
ID                                       : 1
Format                                   : AVC
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format/Url                               : http://developers.videolan.org/x264.html
Commercial name                          : AVC
Format profile                           : [email protected]
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 4
Format settings, Reference frames        : 4 frames
Internet media type                      : video/H264
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 20571
Duration                                 : 20 s 571 ms
Duration                                 : 20 s 571 ms
Duration                                 : 20 s 571 ms
Duration                                 : 00:00:20.571
Duration                                 : 00:00:20:33
Duration                                 : 00:00:20.571 (00:00:20:33)
Bit rate                                 : 11396917
Bit rate                                 : 11.4 Mb/s
Width                                    : 1980
Width                                    : 1 980 pixels
Height                                   : 1080
Height                                   : 1 080 pixels
Stored_Width                             : 1984
Stored_Height                            : 1088
Sampled_Width                            : 1980
Sampled_Height                           : 1080
Pixel aspect ratio                       : 0.970
Display aspect ratio                     : 1.778
Display aspect ratio                     : 16:9
Rotation                                 : 0.000
Frame rate mode                          : CFR
Frame rate mode                          : Constant
FrameRate_Mode_Original                  : VFR
Frame rate                               : 59.940
Frame rate                               : 59.940 (60000/1001) FPS
FrameRate_Num                            : 60000
FrameRate_Den                            : 1001
Frame count                              : 1233
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Chroma subsampling                       : 4:2:0
Bit depth                                : 8
Bit depth                                : 8 bits
Scan type                                : Progressive
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.089
Delay                                    : 48786850
Delay                                    : 13 h 33 min
Delay                                    : 13 h 33 min 6 s 850 ms
Delay                                    : 13 h 33 min
Delay                                    : 13:33:06.850
Delay_Settings                           : DropFrame=No / 24HourMax=No / IsVisual=No
Delay_DropFrame                          : No
Delay, origin                            : Container
Delay, origin                            : Container
Stream size                              : 29305136
Stream size                              : 27.9 MiB (98%)
Stream size                              : 28 MiB
Stream size                              : 28 MiB
Stream size                              : 27.9 MiB
Stream size                              : 27.95 MiB
Stream size                              : 27.9 MiB (98%)
Proportion of this stream                : 0.98253
Title                                    : GoPro H.265
Writing library                          : x264 - core 155 r2917 0a84d98
Writing library                          : x264 core 155 r2917 0a84d98
Encoded_Library_Name                     : x264
Encoded_Library_Version                  : core 155 r2917 0a84d98
Encoding settings                        : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / 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=18 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / 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=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Language                                 : en
Language                                 : English
Language                                 : English
Language                                 : en
Language                                 : eng
Language                                 : en
Color range                              : Full
colour_range_Source                      : Stream
Codec configuration box                  : avcC

Audio
Count                                    : 280
Count of stream of this kind             : 1
Kind of stream                           : Audio
Kind of stream                           : Audio
Stream identifier                        : 0
StreamOrder                              : 1
ID                                       : 2
ID                                       : 2
Format                                   : AAC
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Commercial name                          : AAC
Format_AdditionalFeatures                : LC
Codec ID                                 : mp4a-40-2
Duration                                 : 20566
Duration                                 : 20 s 566 ms
Duration                                 : 20 s 566 ms
Duration                                 : 20 s 566 ms
Duration                                 : 00:00:20.566
Duration                                 : 00:00:20:24
Duration                                 : 00:00:20.566 (00:00:20:24)
Bit rate mode                            : CBR
Bit rate mode                            : Constant
Bit rate                                 : 192000
Bit rate                                 : 192 kb/s
Channel(s)                               : 2
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Channel positions                        : 2/0/0
Channel layout                           : L R
Samples per frame                        : 1024
Sampling rate                            : 48000
Sampling rate                            : 48.0 kHz
Samples count                            : 987168
Frame rate                               : 46.875
Frame rate                               : 46.875 FPS (1024 SPF)
Frame count                              : 964
Compression mode                         : Lossy
Compression mode                         : Lossy
Delay                                    : 48786850
Delay                                    : 13 h 33 min
Delay                                    : 13 h 33 min 6 s 850 ms
Delay                                    : 13 h 33 min
Delay                                    : 13:33:06.850
Delay_DropFrame                          : No
Delay, origin                            : Container
Delay, origin                            : Container
Delay relative to video                  : 0
Delay relative to video                  : 00:00:00.000
Stream size                              : 486535
Stream size                              : 475 KiB (2%)
Stream size                              : 475 KiB
Stream size                              : 475 KiB
Stream size                              : 475 KiB
Stream size                              : 475.1 KiB
Stream size                              : 475 KiB (2%)
Proportion of this stream                : 0.01631
Title                                    : GoPro AAC  
Language                                 : en
Language                                 : English
Language                                 : English
Language                                 : en
Language                                 : eng
Language                                 : en
Default                                  : Yes
Default                                  : Yes
Alternate group                          : 1
Alternate group                          : 1

相关内容