ios - Using AVAssetReader reading HLS .ts segments -

ios - Using AVAssetReader reading HLS .ts segments -

in effort extract raw cmsamplebufferref hls live stream (for re-encoding video), i'm trying utilize avassetreader read hls stream (.m3u8 file). since reading network stream straight not supported avassetreader, i'm trying download .ts files listed in hls m3u8 index file local drive first, read using avassetreader. however, when tried opening .ts file avassetreader, i'm getting error "this media format not supported" (error domain=avfoundationerrordomain code=-11828 "cannot open" userinfo=0x7fd3aa723570 {nslocalizedfailurereason=this media format not supported).

does know if avassetreader supports reading .ts (mpeg2 transport stream) local drive? if not, there other way create/extract cmsamplebufferref hls stream? thanks!

ios avfoundation share|improve question asked nov 2 '14 @ 4:16 clx 6026 add comment |  1 reply 1 active oldest votes up vote 0 down vote

as far know, not. however, seems straightforward extract sound , video streams ts manually. wwdc session 513 wwdc2014 has great session on videotoolkit, , happens talk muxing/demuxing ts @ high level. maybe i'm missing something, seems can take 2 first blocks of info , extract pps , sps these, create cmvideoformatdescriptionref these, , alter start code next nal units length header , feed these straight vtdecompressionsession. this answer goes through these steps in detail.

alternatively, here's a cocoapod remuxes ts2 mp4.

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