Use Qiniu SDK to play local MP4 without sound

use Qiniu SDK to play local MP4 without sound. Do you encounter this situation? even if the sound is turned on at 3, there is no sound

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Qiniu-Cloud-Storage objective-c
May.11,2021

you can use ffmpeg to take a look at the encoding format of local audio
Qiniu self-developed player supports format

  1. Transport protocol: LVB: RTMP,HTTP-FLV. VOD: HTTP (s), FILE
  2. File format: MP4,FLV, M3U8, MP3, AAC
  3. Video Decoding: H264, H265, MPEG4
  4. Audio Decoding: AAC, MP3. SPEEX.

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