iOS 浏览器是否支持带有 h264 视频和 4 个（或更多）AAC 音频通道的 mp4？
[英]Is there iOS browser support for mp4 with h264 video and 4 (or more) AAC audio channels?
问题描述
I added 4 channels (two stereo) of AAC audio to an mp4 with an h264 video using ffmpeg.
我使用 ffmpeg 将 AAC 音频的 4 个通道（两个立体声）添加到带有 h264 视频的 mp4 中。 I am using the Web Audio Api to split the channels and merge them back together for independent control in sync with the video.我正在使用 Web Audio Api 拆分通道并将它们合并在一起，以便与视频同步进行独立控制。 This is working successfully on Windows and macOs browsers (Chrome, Firefox, Safari, Opera, Edge), but the file is not playable on iOS (Safari and Chrome).这在 Windows 和 macOS 浏览器（Chrome、Firefox、Safari、Opera、Edge）上成功运行，但无法在 iOS（Safari 和 Chrome）上播放该文件。 I am waiting for an android device to test on that platform, but from what I've gathered this would work.我正在等待一个 android 设备在该平台上进行测试，但从我收集到的信息来看，这是可行的。 Does anyone have any insight into this issue?有没有人对这个问题有任何见解？ Thank you in advance!先感谢您！
I have added the log of a mediainfo query below:我在下面添加了 mediainfo 查询的日志：
Complete name : multi_channel.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 25.7 MiB
Duration : 4 min 33 s
Overall bit rate : 787 kb/s
Writing application : Lavf58.76.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 4 min 33 s
Bit rate : 525 kb/s
Width : 1 280 pixels
Height : 536 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.032
Stream size : 17.1 MiB (67%)
Title : ISO Media file produced by Google Inc. Created on: 09/03/2019.
Writing library : x264 core 163 r3060 5db6aa6
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=17 / 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=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / 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
Menus : 3
Codec configuration box : avcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 4 min 33 s
Source duration : 4 min 33 s
Source_Duration_LastFrame : -22 ms
Bit rate mode : Constant
Bit rate : 257 kb/s
Channel(s) : 4 channels
Channel layout : L R Ls Rs
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 8.37 MiB (33%)
Source stream size : 8.37 MiB (33%)
Default : Yes
Alternate group : 1
Menus : 3
mdhd_Duration : 273764
Menu #1
ID : 3
Codec ID : text
Duration : 4 min 33 s
Language : English
Menu For : 1,2
00:00:00.000 : Tempo: 120.0
Menu #2
00:00:00.000 : Tempo: 120.0
1 个解决方案
解决方案1
0 2021-10-24 13:01:04
Can you add some code - like the video attribute - iOS requires the "playsinline" attribute - which would be the first thing to check.你能添加一些代码吗——比如视频属性——iOS需要“playsinline”属性——这将是首先要检查的。
If that is present - what does the console log tell you?如果存在 - 控制台日志会告诉您什么？
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