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• Cannot play DAV to MP4 converted H.265 video file with hvc1 tag in iPhone

  21 août 2023, par Venkata Subbarao

  I have converted H.265 video file in dav format from Dahua camera using following commands. Both of the generated mp4 video files are NOT playable in iPhone default player. However, the generated video files are playable in VLC player.

  


  ffmpeg -y -i hevc.dav -c:v copy -tag:v hvc1 hevc.mp4
ffmpeg -y -i hevc.dav -tag:v hvc1 -c:v copy -f mp4 -movflags frag_keyframe+empty_moov hevc.mp4


  


  Generated video file plays only if I re-encode the video using following command.

  


  ffmpeg -y -i hevc.dav -c:v libx265 -tag:v hvc1 hevc.mp4


  


  Re-encoding is time consuming. So, please let me know, if I am missing any flags in the above commands.

  


• HLS Content Throwing 403 Errors on iPhone Indeterminately [closed]

  10 août 2023, par Shishir Jakati

  I am facing an issue with video content that I have converted to HLS playlist content (using ffmpeg) added to an S3 bucket that is shared through a Cloudfront Distribution. My scenario is the following :

  


  I have a bucket called bucket-a, with a "folder" video-1 which contains the following files :

  


  

  • output.m3u8

  


  • output0.ts

  


  • ...

  


  • output15.ts

  


  • audio/

    

    • audio.aac

    


    


  


  • image.jpg

  


  


  All items in bucket-a are blocked from public access through S3. Content is only vended through a Cloudfront distribution which has origin bucket-a. I am able to access https://<distro>.cloudfront.net/path/output.m3u8</distro> on a desktop browser without fail, and no errors thrown. But the file output.m3u8 and all .ts files are not available on iPhone mobile browsers. The part that is peculiar is that this is not true for all playlist content in bucket-a. For example, I have a "folder" video-2 within bucket-a that has the same file structure as video-1 that is completely accessible through all mobile browsers.

  


  Here is an example master playlist error : https://dbs3s11vyxuw0.cloudfront.net/bottle-promo/script_four/output.m3u8

  


  Even more head-scratching is that I am able to access all the playlists that are within this playlist.

  


  What I've tried :

  


  

  • Initially, I believed the issue to be due to the way the video was transcoding so I standardized the video transcoding.

  


  • Then I believed the issue to be due to CloudFront permissions, though those seem to be fine.

  


  • I've validated my stream here : https://ott.dolby.com/OnDelKits_dev/StreamValidator/Start_Here.html

  


  


  Not sure which way to turn.

  


• Live Video Chat for iPhone and HTTP Live Streaming

  14 janvier 2024, par mayuur

  I want to make an app which has video chat functionality for iPhone. But after many searches, I am still not able to find any successful results. Is there any public or even for that matter, private API available for doing this on iPhone ? If you have an YES answer, please help me.

  


  Basically, what I want is to read the streams of the video on both the devices connected for chatting. Please help me if you can.

  


  p.s - I have already checked iDoubs but it failed and always shows some unknown problem and for that reason, doesn't allow me to connect to anyone.

  


  ALSO : The suggested method I have found is via HTTP Live Streaming. But, in that too, I have multiple doubts.

  


  1.) I need to find how do I upload my video from iPhone to the HTTP server from where I would be broadcasting ?

  


  2.) Can you please post something related to setting up the server ? How do I feed the video to the FFMPEG Server ?

  


  Mainly, I need to find the upload method. I am right now simply sending hex-code in the form of NSDATA to the server and I am stuck there. The main problem is, It is live. How do I handle that ?

  


  It would be best, if you could help me make the iDoubs work properly.