Transcoded x264 choppy on MVP

[JonRoyle]

the Animatrix - the worst of the bunch and very noticable with its falling matrix text effect on the intro still jutters every second.

Stu - I will give the file a try on my set-up. Is this the same version that you have http://thepiratebay.org/torrent/4460614/...64%5D.mkv?

Jon

[stu8080]

Yeah, thats the one. Must have watched 'Flight of the Osisris' about twenty times this week and still not tired of it, of course i picked that file for technical reasons!

[pBS]

answers:
/FFMPEGTranscodeCmdLinePAL has -f svcd at end so it forces mpeg2,480x480,mp2,224k...
[Order Matters!]
options meant for input should go before it, those meant for output should be after the -i
[almost everything goes after,letting ffmpeg detect input]

-qscale is constant Quality,vbr...i use around 4 to 8..4 being better quality..
nice cuz it always has a consistant quality, and maximized compression..tho for this application, constant bitrate is better [-b 2048k] [steady stream, cbr...]

-vsync syncs audio to video stream, -async does same for audio..

map_meta_data is for avi...-map 0:0 is for choosing streams...
usefull for multi-audio streams...

progressive you don't have to worry about, ffmpeg will handle it fine automatically..
the video card 'interlaces' it on the way out to your monitor, if it's an interlaced monitor...otherwise it just sends out unchanged..

for all my transcodes, ffmpeg seems to handle telecine excellently...haven't done much from pal to ntsc but have you tried leaving it in ntsc form? computers can play fine as the video card adjusts..[usually] [30fps]
not much as far as tweaking the telecine settings w/ffmpeg...mencoder is better there..

[zehd]

Stu - I will give the file a try on my set-up. Is this the same version that you have http://thepiratebay.org/torrent/4460614/...64%5D.mkv?

Jon

I'll download this one too for testing

[stu8080]

-vsync syncs audio to video stream, -async does same for audio..

This requires a parameter - i couldnt figure out what?
ie -vsynch value

Thanks for the info - documentation is rare for ffmpeg - where do you guys get your know how???

[HtV]

This is the ffmpeg docs site: FFmpeg Documentation
Good luck.

Hans

[pBS]

i believe it's just -vsync 1 to turn it on...

[JonRoyle]

Done some testing and agree the result is a very choppy video with audio out of synch as well. (Rest of my mkv collection is fine). Did some analysis and the issue is with ffmpeg decoding not the MVP.

Added -async 1 to transcode command line to address sync issue and downloaded a later version of ffmpeg http://ffmpeg.arrozcru.org/builds/ (used static libraries) and it is now playable.

Jon

[zehd]

Done some testing and agree the result is a very choppy video with audio out of synch as well. (Rest of my mkv collection is fine). Did some analysis and the issue is with ffmpeg decoding not the MVP.

Added -async 1 to transcode command line to address sync issue and downloaded a later version of ffmpeg http://ffmpeg.arrozcru.org/builds/ (used static libraries) and it is now playable.

Jon

Thanks for the leg work...

[stu8080]

can you post your transcode command line? It didnt seem to make any difference here. There are only two variables here surely: the version of ffmpeg and the parameters passed to it?