objective-c - After downloading some m3u8 format videos, the playback progress bar of the player flashes once during playback, and the screen becomes black and the playback cannot be played. In other cases, the screen goes black directly. What's going on?

Question

2016-05-18 15:52:20.694 VideoTest[1701:93070] 15:52:20.694 ERROR: >aq> 1609: Exiting because mConverterError is -1 (0x1000 req, 0x0 primed)
2016-05-18 15:52:20.695 VideoTest[1701:93070] 15:52:20.695 ERROR: >aq> 1630: failed (-1); will stop (4096/0 frames)
2016-05-18 15:52:21.309 VideoTest[1701:93035] 15:52:21.309 ERROR: >aq> 1609: Exiting because mConverterError is 'nope' (0x1000 req, 0x26f primed)
2016-05-18 15:52:21.309 VideoTest[1701:93035] 15:52:21.309 ERROR: >aq> 1630: failed ('nope'); will stop (4096/623 frames)
2016-05-18 15:52:22.075 VideoTest[1701:93108] 15:52:22.075 ERROR: >aq> 1609: Exiting because mConverterError is 'nope' (0x1000 req, 0x0 primed)
2016-05-18 15:52:22.075 VideoTest[1701:93108] 15:52:22.075 ERROR: >aq> 1630: failed ('nope'); will stop (4096/0 frames)
2016-05-18 15:52:23.062 VideoTest[1701:93108] 15:52:23.062 ERROR: >aq> 1609: Exiting because mConverterError is 'nope' (0x1000 req, 0x0 primed)
2016-05-18 15:52:23.062 VideoTest[1701:93108] 15:52:23.062 ERROR: >aq> 1630: failed ('nope'); will stop (4096/0 frames)
2016-05-18 15:52:23.068 VideoTest[1701:93108] 15:52:23.068 ERROR: >aq> 1609: Exiting because mConverterError is 'nope' (0xbb80 req, 0x0 primed)
2016-05-18 15:52:23.069 VideoTest[1701:93108] 15:52:23.069 ERROR: >aq> 1630: failed ('nope'); will stop (48000/0 frames)

Answer 1

m3u8 seems to be a streaming media format. You can search for "HLS Download Assistant" online and use this to enter the m3u8 address to start downloading.