$ gnash -vvv http://www.youtube.com/v/4DFtcsp1I7Q
5710:1] 15:15:35 DEBUG: Created top level window
5710:1] 15:15:35 DEBUG: gnash_canvas_size_allocate 277 1
5710:1] 15:15:35 DEBUG: Framebuffer pixel format is BGRA32 (little-endian host)
5710:1] 15:15:35 SECURITY: Checking security of URL 'http://www.youtube.com/v/4DFtcsp1I7Q'
5710:1] 15:15:35 SECURITY: Load from host www.youtube.com granted (default)
5710:1] 15:15:35 DEBUG: CurlStreamFile 0x1efe700 created
5710:1] 15:15:35 DEBUG: HTTP response 200 from url http://www.youtube.com/v/4DFtcsp1I7Q
5710:1] 15:15:35 DEBUG: Movie http://www.youtube.com/v/4DFtcsp1I7Q (SWF8) added to library
5710:1] 15:15:35 DEBUG: Plugins path: /usr/lib/gnash/plugins
5710:1] 15:15:35 SECURITY: Extensions disabled
5710:1] 15:15:35 DEBUG: Player Host FD #-1, Player Control FD #-1
5710:1] 15:15:35 DEBUG: Advance interval timer set to 10 ms (~ 100 FPS)
5710:1] 15:15:35 DEBUG: Loading native class MovieClip
5710:2] 15:15:35 UNIMPLEMENTED: FileAttributes tag in the SWF requests that network access is not granted to this movie (or application?) when loaded from the filesystem. Anyway Gnash won't care; use white/black listing in your .gnashrc instead
5710:2] 15:15:35 DEBUG: This SWF uses AVM1
5710:1] 15:15:35 DEBUG: Loading native class MovieClipLoader
5710:1] 15:15:35 DEBUG: Loading native class AsBroadcaster
5710:1] 15:15:35 DEBUG: MovieLoader::loadMovie(http://s.ytimg.com/yt/swfbin/cps-vfl8BB1Y3.swf, _level0.loadClip)
5710:1] 15:15:35 DEBUG: Loading native class System
5710:3] 15:15:35 SECURITY: Checking security of URL 'http://s.ytimg.com/yt/swfbin/cps-vfl8BB1Y3.swf'
5710:3] 15:15:35 SECURITY: Load from host s.ytimg.com granted (default)
5710:3] 15:15:35 DEBUG: CurlStreamFile 0x202c9e0 created
5710:1] 15:15:35 UNIMPLEMENTED: System.security.allowDomain
5710:1] 15:15:35 DEBUG: Global instance list grew to 2 entries
5710:1] 15:15:35 DEBUG: Starting virtual clock
5710:1] 15:15:35 DEBUG: gnash_canvas_size_allocate 640 480
5710:3] 15:15:35 DEBUG: Movie http://s.ytimg.com/yt/swfbin/cps-vfl8BB1Y3.swf (SWF9) added to library
5710:4] 15:15:36 DEBUG: HTTP response 200 from url http://s.ytimg.com/yt/swfbin/cps-vfl8BB1Y3.swf
5710:1] 15:15:36 DEBUG: Loading native class Math
5710:1] 15:15:36 DEBUG: Loading flash.filters package
5710:1] 15:15:36 DEBUG: Loading flash.filters.BitmapFilter class
5710:1] 15:15:36 DEBUG: Loading flash.geom package
5710:1] 15:15:36 DEBUG: Loading flash.geom.Rectangle class
5710:1] 15:15:36 DEBUG: Super has no associated constructor
5710:1] 15:15:36 DEBUG: Super has no associated constructor
5710:1] 15:15:36 DEBUG: Loading flash.external package
5710:1] 15:15:36 DEBUG: Loading flash.external.ExternalInterface class
5710:1] 15:15:36 DEBUG: Loading native class Sound
5710:1] 15:15:36 DEBUG: Loading native class SharedObject
5710:1] 15:15:36 DEBUG: SO name:soundData, root:/
5710:1] 15:15:36 DEBUG: SharedObject www.youtube.com//soundData not loaded. Loading it now
5710:1] 15:15:36 DEBUG: SharedObject path: /home/user03/.gnash/SharedObjects/www.youtube.com//soundData.sol
5710:1] 15:15:36 DEBUG: readSOL: reading property name at byte 31
5710:1] 15:15:36 DEBUG: parsed sol member named 'volume' (len 6),  value '[number:100]'
5710:1] 15:15:36 DEBUG: SharedObject.getLocal returning [object(gnash::SharedObject_as):0x260afb0]
5710:1] 15:15:36 DEBUG: Loading native class XML
5710:1] 15:15:36 DEBUG: Loading native class XMLNode
5710:1] 15:15:36 DEBUG: Loading native class TextFormat
5710:1] 15:15:36 DEBUG: Loading native class TextField
5710:1] 15:15:36 UNIMPLEMENTED: TextField.setNewTextFormat(), we'll delegate to setTextFormat
5710:1] 15:15:36 DEBUG: Loading native class NetConnection
5710:1] 15:15:36 DEBUG: Loading native class NetStream
5710:1] 15:15:36 DEBUG: Loading native class Video
5710:1] 15:15:36 DEBUG: Loading native class Color
5710:1] 15:15:36 DEBUG: Loading native class Mouse
5710:1] 15:15:36 DEBUG: gnash::as_value gnash::<unnamed>::sharedobject_flush(const gnash::fn_call&) enter
5710:1] 15:15:36 SECURITY: SharedObject '/home/user03/.gnash/SharedObjects/www.youtube.com//soundData.sol' written to filesystem.
5710:1] 15:15:36 DEBUG: gnash::as_value gnash::<unnamed>::sharedobject_flush(const gnash::fn_call&) returning
5710:1] 15:15:36 DEBUG: Loading native class Key
5710:1] 15:15:36 UNIMPLEMENTED: MovieClip.filters()
5710:1] 15:15:36 DEBUG: ::pause(0) called 
5710:1] 15:15:36 DEBUG: void gnash::NetStream_as::pausePlayback() enter
5710:1] 15:15:36 DEBUG: void gnash::NetStream_as::pausePlayback() returning
5710:1] 15:15:36 DEBUG: detachAuxStreamer called while not attached
5710:1] 15:15:36 UNIMPLEMENTED: System.security.loadPolicyFile
5710:1] 15:15:36 DEBUG: MovieLoader::loadMovie(http://i1.ytimg.com/vi/4DFtcsp1I7Q/hqdefault.jpg, _level0.loadClip.overallHolder.videoPlayer.still.holder)
5710:1] 15:15:36 DEBUG: loadMovie: waking up existing thread
5710:3] 15:15:36 SECURITY: Checking security of URL 'http://i1.ytimg.com/vi/4DFtcsp1I7Q/hqdefault.jpg'
5710:3] 15:15:36 SECURITY: Load from host i1.ytimg.com granted (default)
5710:3] 15:15:36 DEBUG: CurlStreamFile 0x2cad080 created
5710:1] 15:15:36 DEBUG: Loading native class Stage
5710:1] 15:15:36 DEBUG: Loading native class ContextMenu
5710:1] 15:15:36 DEBUG: Loading native class ContextMenuItem
5710:1] 15:15:36 DEBUG: Going to or from scaleMode=noScale. Viewport:640x480 Def:640x480
5710:1] 15:15:36 DEBUG: Global instance list grew to 199 entries
5710:1] 15:15:36 ERROR: No Video info in video definition
5710:1] 15:15:36 DEBUG: Loading native class Accessibility
5710:1] 15:15:36 UNIMPLEMENTED: accessibility_updateProperties
5710:3] 15:15:36 UNIMPLEMENTED: Requested to keep from completely loading a movie, but the movie in question is an image, for which we don't yet have the concept of a 'loading thread'
5710:3] 15:15:36 DEBUG: HTTP response 200 from url http://i1.ytimg.com/vi/4DFtcsp1I7Q/hqdefault.jpg
5710:3] 15:15:36 DEBUG: CurlStreamFile 0x2cad080 deleted
5710:3] 15:15:36 DEBUG: Movie http://i1.ytimg.com/vi/4DFtcsp1I7Q/hqdefault.jpg (SWF6) added to library
5710:1] 15:15:36 DEBUG: Loading flash.display package
5710:1] 15:15:36 DEBUG: Loading flash.display.BitmapData class
5710:1] 15:15:37 DEBUG: Loading native class Selection
5710:1] 15:15:37 DEBUG: ::pause(0) called 
5710:1] 15:15:37 DEBUG: void gnash::NetStream_as::pausePlayback() enter
5710:1] 15:15:37 DEBUG: void gnash::NetStream_as::pausePlayback() returning
5710:1] 15:15:37 DEBUG: ::pause(0) called 
5710:1] 15:15:37 DEBUG: void gnash::NetStream_as::pausePlayback() enter
5710:1] 15:15:37 DEBUG: void gnash::NetStream_as::pausePlayback() returning
5710:1] 15:15:37 DEBUG: Loading native class LoadVars
5710:1] 15:15:37 SECURITY: Checking security of URL 'http://www.youtube.com/get_video_info?video_id=4DFtcsp1I7Q&el=embedded&ps=default&eurl=&hl=en_US'
5710:1] 15:15:37 SECURITY: Load from host www.youtube.com granted (default)
5710:1] 15:15:37 DEBUG: CurlStreamFile 0x2728f80 created
5710:1] 15:15:37 DEBUG: Global instance list grew to 208 entries
5710:1] 15:15:37 DEBUG: Global instance list grew to 209 entries
5710:1] 15:15:37 DEBUG: Global instance list grew to 210 entries
5710:1] 15:15:38 DEBUG: HTTP response 200 from url http://www.youtube.com/get_video_info?video_id=4DFtcsp1I7Q&el=embedded&ps=default&eurl=&hl=en_US
5710:1] 15:15:38 DEBUG: LoadableObject Loaded 2927 bytes, reaching 2927/2927
5710:1] 15:15:38 DEBUG: LoadableObject reached EOF (2927/2927 loaded)
5710:1] 15:15:38 DEBUG: Loading native class Date
5710:1] 15:15:38 DEBUG: detachAuxStreamer called while not attached
5710:1] 15:15:38 SECURITY: Connecting to movie: http://v15.lscache7.c.youtube.com/videoplayback?ip=0.0.0.0&sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Calgorithm%2Cburst%2Cfactor%2Coc%3AU0dYSFZQVF9FSkNNOF9OSlhF&fexp=900034&algorithm=throttle-factor&itag=18&ipbits=0&burst=40&sver=3&expire=1293656400&key=yt1&signature=8255303CDAD2A16E35022DB8DC94E001C1ED4577.D0E55F4C00CB2E9A8CB9961254FAD85208B1DD5C&factor=1.25&id=e0316d72ca7523b4
5710:1] 15:15:38 SECURITY: Checking security of URL 'http://v15.lscache7.c.youtube.com/videoplayback?ip=0.0.0.0&sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Calgorithm%2Cburst%2Cfactor%2Coc%3AU0dYSFZQVF9FSkNNOF9OSlhF&fexp=900034&algorithm=throttle-factor&itag=18&ipbits=0&burst=40&sver=3&expire=1293656400&key=yt1&signature=8255303CDAD2A16E35022DB8DC94E001C1ED4577.D0E55F4C00CB2E9A8CB9961254FAD85208B1DD5C&factor=1.25&id=e0316d72ca7523b4'
5710:1] 15:15:38 SECURITY: Load from host v15.lscache7.c.youtube.com granted (default)
5710:1] 15:15:38 DEBUG: CurlStreamFile 0x2cae580 created
5710:1] 15:15:38 DEBUG: Parsing FFMPEG media file: format:mov,mp4,m4a,3gp,3g2,mj2; nstreams:2
5710:1] 15:15:38 DEBUG:   Using stream 0 for audio: codec id 86018
5710:1] 15:15:38 DEBUG:   Using stream 1 for video: codec id 28
5710:1] 15:15:38 DEBUG: Starting MediaParser thread
5710:1] 15:15:38 DEBUG: SO name:videostats, root:/
5710:1] 15:15:38 DEBUG: SharedObject www.youtube.com//videostats not loaded. Loading it now
5710:1] 15:15:38 DEBUG: SharedObject path: /home/user03/.gnash/SharedObjects/www.youtube.com//videostats.sol
5710:1] 15:15:38 DEBUG: readSOL: reading property name at byte 32
5710:1] 15:15:38 DEBUG: parsed sol member named 'perf' (len 4),  value '[object(array):0x26d7080]'
5710:1] 15:15:38 DEBUG: SharedObject.getLocal returning [object(gnash::SharedObject_as):0x26d6ed0]
5710:1] 15:15:38 DEBUG: MovieLoader::loadMovie(http://www.youtube.com/get_video?video_id=4DFtcsp1I7Q&t=vjVQa1PpcFObV8RjjNGMc9-jHZGEhncSmCvOMD9jH8o=&eurl=&el=embedded&ps=default&fmt=18&asv=2&noflv=1&tmi=1, _level0.loadClip.junkClip)
5710:1] 15:15:38 DEBUG: loadMovie: waking up existing thread
5710:3] 15:15:38 SECURITY: Checking security of URL 'http://www.youtube.com/get_video?video_id=4DFtcsp1I7Q&t=vjVQa1PpcFObV8RjjNGMc9-jHZGEhncSmCvOMD9jH8o=&eurl=&el=embedded&ps=default&fmt=18&asv=2&noflv=1&tmi=1'
5710:3] 15:15:38 SECURITY: Load from host www.youtube.com granted (default)
5710:3] 15:15:38 DEBUG: CurlStreamFile 0x2caed60 created
5710:1] 15:15:38 UNIMPLEMENTED: Rectangle_intersects
5710:1] 15:15:38 DEBUG: SO name:subtitlesModuleData, root:/
5710:1] 15:15:38 DEBUG: SharedObject www.youtube.com//subtitlesModuleData not loaded. Loading it now
5710:1] 15:15:38 DEBUG: SharedObject path: /home/user03/.gnash/SharedObjects/www.youtube.com//subtitlesModuleData.sol
5710:1] 15:15:38 DEBUG: No existing SOL /home/user03/.gnash/SharedObjects/www.youtube.com//subtitlesModuleData.sol found. Will create on flush/exit.
5710:1] 15:15:38 DEBUG: SharedObject.getLocal returning [object(gnash::SharedObject_as):0x29fb110]
5710:1] 15:15:38 DEBUG: TextField.removeTextField() TESTING
5710:1] 15:15:38 DEBUG: CurlStreamFile 0x2728f80 deleted
5710:1] 15:15:38 DEBUG: Global instance list grew to 245 entries
5710:1] 15:15:38 DEBUG: VideoDecoder: initialized FFMPEG codec h264 (28)
5710:1] 15:15:38 DEBUG: NetStream_as::initVideoDecoder: hot-plugging video consumer
[swscaler @ 0x25bf000]No accelerated colorspace conversion found.
5710:1] 15:15:38 DEBUG: Global instance list grew to 246 entries
5710:1] 15:15:38 DEBUG: Global instance list grew to 247 entries
5710:1] 15:15:38 DEBUG: Global instance list grew to 248 entries
5710:1] 15:15:38 DEBUG: Global instance list grew to 249 entries
5710:3] 15:15:38 DEBUG: HTTP response 204 from url http://www.youtube.com/get_video?video_id=4DFtcsp1I7Q&t=vjVQa1PpcFObV8RjjNGMc9-jHZGEhncSmCvOMD9jH8o=&eurl=&el=embedded&ps=default&fmt=18&asv=2&noflv=1&tmi=1
5710:3] 15:15:38 ERROR: Can't read file header
5710:3] 15:15:38 ERROR: Unknown file type
5710:3] 15:15:38 DEBUG: CurlStreamFile 0x2caed60 deleted
5710:3] 15:15:38 ERROR: Couldn't load library movie 'http://www.youtube.com/get_video?video_id=4DFtcsp1I7Q&t=vjVQa1PpcFObV8RjjNGMc9-jHZGEhncSmCvOMD9jH8o=&eurl=&el=embedded&ps=default&fmt=18&asv=2&noflv=1&tmi=1'
5710:5] 15:15:39 DEBUG: HTTP response 200 from url http://v15.lscache7.c.youtube.com/videoplayback?ip=0.0.0.0&sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Calgorithm%2Cburst%2Cfactor%2Coc%3AU0dYSFZQVF9FSkNNOF9OSlhF&fexp=900034&algorithm=throttle-factor&itag=18&ipbits=0&burst=40&sver=3&expire=1293656400&key=yt1&signature=8255303CDAD2A16E35022DB8DC94E001C1ED4577.D0E55F4C00CB2E9A8CB9961254FAD85208B1DD5C&factor=1.25&id=e0316d72ca7523b4
terminate called after throwing an instance of 'gnash::MediaException'
  what():  MediaParserFfmpeg couldn't parse input format: tried to seek at negative offset -9223372036854235006.
Aborted
