CBers 6780 Posted January 29, 2015 Share Posted January 29, 2015 @@Latchmor - I saw your posts with Luke last night. I tried the same version but my MKVs still transcoded, converting AC3 to AAC. Link to comment Share on other sites More sharing options...
eraser8 46 Posted January 30, 2015 Author Share Posted January 30, 2015 Hi guys, Is there a way for me to manually modify my chromecast profile on my MB Server? Thanks Link to comment Share on other sites More sharing options...
KRA 39 Posted February 14, 2015 Share Posted February 14, 2015 Also there should be no need to do a full transcode if it's a mkv, just change the container to mp4 and directcopy the video and audio stream. Link to comment Share on other sites More sharing options...
CBers 6780 Posted February 14, 2015 Share Posted February 14, 2015 Also there should be no need to do a full transcode if it's a mkv, just change the container to mp4 and directcopy the video and audio stream. Do you mean convert, or just change the extension? Link to comment Share on other sites More sharing options...
KRA 39 Posted February 14, 2015 Share Posted February 14, 2015 ffmpeg -i input.mkv -vcodec copy -acodec copy out.mp4 This is done within seconds and you have a file chromecast can read, if the video and audio content is a format chromecast reads. 1 Link to comment Share on other sites More sharing options...
eraser8 46 Posted February 15, 2015 Author Share Posted February 15, 2015 Pretty good solution to be able to play our .mkv through the Chromecast. I like it and it should not be a big process load. Link to comment Share on other sites More sharing options...
KRA 39 Posted February 15, 2015 Share Posted February 15, 2015 everything i've read points to ref=4 as the max. what can i refer to that indicates 5? http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Levels 1,280×720@68.3 (9 ref)1,920×1,080@30.1 (4 ref) 2,048×1,024@30.0 (4 ref) Note that on cropped media, such as 1920x800 high@L4.1 - CC should handle 5 ref just fine because it's within the buffer limits of the specs. Link to comment Share on other sites More sharing options...
OddbOd 21 Posted October 23, 2017 Share Posted October 23, 2017 Spot on KRA and the math proves it:- maximum ref = MaxDPB * 1024 / ( FrameWidth * FrameHeight * 1.5) = 12288 * 1024 / (1920 * 800 * 1.5) = 5 (rounded down to the nearest integer) Maybe the Chromecast takes a naive approach to decide whether or not to play a video. Something along the lines of, if the height is greater than 720 and the number of references is greater than 4 don't even attempt playback. everything i've read points to ref=4 as the max. what can i refer to that indicates 5? https://en.wikibooks.org/wiki/MeGUI/x264_Settings#ref Link to comment Share on other sites More sharing options...
Luke 37191 Posted October 23, 2017 Share Posted October 23, 2017 @@OddbOd, we actually don't restrict on refframes anymore for chromecast. What we now is try to play, and if it fails we automatically switch to transcoding. Link to comment Share on other sites More sharing options...
OddbOd 21 Posted October 23, 2017 Share Posted October 23, 2017 @@Luke, that is hilarious, I suggested exactly the same technique be implemented in the unofficial Samsung client (last paragraph of https://emby.media/community/index.php?/topic/31627-framerate-check-causes-playback-failure-or-unwanted-transcoding/?p=304099)and was ignored. Link to comment Share on other sites More sharing options...
Luke 37191 Posted October 23, 2017 Share Posted October 23, 2017 @@Luke, that is hilarious, I suggested exactly the same technique be implemented in the unofficial Samsung client (last paragraph of https://emby.media/community/index.php?/topic/31627-framerate-check-causes-playback-failure-or-unwanted-transcoding/?p=304099)and was ignored. We have it in our official Samsung app as well. Link to comment Share on other sites More sharing options...
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