OK. Would that explain why my pass-through stream (top one, 31:17, while other 2 versions are 31:20) is different length to the others?
Seems a big shame to have to transcode source 720p stream just for keyframe alignment, big CPU usage. Any other way around this?
I use ffmpeg. Does nimble transcoder overcome this somehow?
I notice one of your transcoder videos shows pass-through source stream while encoding medium and lower bitrate versions, presumably all keyframe-aligned.
I would try nimble transcoder if there was a trial.
live/high /var/www/html/nimble 00:31:17 553.5MB avc1.64001f mp4a.40.2 1280x720
2.4Mbps
live/low /var/www/html/nimble 00:31:20 149.8MB avc1.42c01e mp4a.40.2 640x360
652.6Kbps
live/medium /var/www/html/nimble 00:31:20 306.4MB avc1.4d401f mp4a.40.2 896x504
1.3Mbps