Opened 11 years ago
Last modified 9 years ago
#2933 new enhancement
flv captions
Reported by: | Carl Eugen Hoyos | Owned by: | |
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Priority: | wish | Component: | avformat |
Version: | git-master | Keywords: | flv sub |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
http://ffmpeg.gusari.org/viewtopic.php?f=16&t=1013
A user provided two flv samples that are said to contain "captions" made with Captionate that can be shown with JWplayer and Flash Professional Extension.
$ ffmpeg -i NSF_CT_001.flv ffmpeg version N-55966-gfdd1aaf Copyright (c) 2000-2013 the FFmpeg developers built on Sep 3 2013 00:31:26 with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --disable-indev=jack libavutil 52. 43.100 / 52. 43.100 libavcodec 55. 31.100 / 55. 31.100 libavformat 55. 15.100 / 55. 15.100 libavdevice 55. 3.100 / 55. 3.100 libavfilter 3. 82.102 / 3. 82.102 libswscale 2. 5.100 / 2. 5.100 libswresample 0. 17.103 / 0. 17.103 libpostproc 52. 3.100 / 52. 3.100 [flv @ 0x2c90080] Stream discovered after head already parsed Input #0, flv, from 'NSF_CT_001.flv': Metadata: creationdate : Thu Jun 20 16:55:42 2013 lasttimestamp : 113 lastkeyframetimestamp: 112 audiodelay : 0 canSeekToEnd : false videosize : 6627143 audiosize : 1877740 datasize : 4116 metadatacreator : Manitu Group Captionate 2 Duration: 00:01:53.03, start: 0.000000, bitrate: 602 kb/s Stream #0:0: Video: vp6f, yuv420p, 480x360, 614 kb/s, 29.97 tbr, 1k tbn, 1k tbc Stream #0:1: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s Stream #0:2: Data: none At least one output file must be specified
Change History (3)
comment:1 by , 11 years ago
comment:2 by , 9 years ago
More info on: http://www.buraks.com/captionate/docs/receive.html and http://flash.flowplayer.org/documentation/events/clip.html
Demuxer support implemented in 3727cd5416788df8e4a54dbde903de858de7de7b.
According to captionate documention there might be subs for multiple streams:
nets.onCaption = function(captions,speaker){ trace('onCaption event at '+nets.time); trace(' Speaker index: '+speaker); for (n=0;n<captions.length;n++){ str=captions[n]; trace(' Caption for track '+n+' > "'+str+'"'); } nets.onCaptionInfo = function(info){ trace('onCaptionInfo event at '+nets.time); speakers=info.speakers; for (n=0;n<speakers.length;n++){ obj=speakers[n]; trace(' Speaker '+n+' > '+ ' name: "'+obj.name+'"'+ ' data: "'+obj.data+'"' ); } tracks=info.tracks; for (n=0;n<tracks.length;n++){ obj=tracks[n]; trace(' Track '+n+' > '+ ' displayname: "'+obj.displayname+'"'+ ' type: "'+obj.type+'"'+ ' languagecode: "'+obj.languagecode+'"'+ ' targetwpm: '+obj.targetwpm+ ' data: "'+obj.data+'"' ); } } }
comment:3 by , 9 years ago
Linebreaks don't work for the given sample, see:
http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/192746
The mentioned patch was applied in 87f90be4 and before.
Samples uploaded to http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket2933/