Audio going too fast for FLV, really messing me up :(

[sigpikul]

I'm just trying to desperately get an FLV so I can post my video on brightcove without using their converter which sacrifices the sound quality too much. I finally got everything to work, but the sound (mp3/192kbs/41000) is too fast (by about 11.9 percent) the video is like this before it gets to brightcove, I play it in VLC.

After I tried to fix this with an altered soundtrack from audacity, I realized that that kind of fix wouldn't work for me for two reasons, first being that if I slowed the track down then the end result if it worked would have about 30 seconds of black video at the end, and the second being that it would be almost impossible to get it completely right, and alot of this video relies on its timing w/ the music.

Here's a link to a brightcove player for what happens: http://link.brightcove.com/services/player/bcpid1435443326

This one I tried to slow the track down in audacity and then put it together in quicktime pro and tried to run it through ffmpegx, on this one I actually clicked inverse mapping and the video is choppy, but the sound is still too slow! I don't know whats going on here:

FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Thu Feb 28 06:02:12 PST 2008
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tr-Bigteest.mov':
Duration: 00:04:00.0, start: 0.000000, bitrate: 20632 kb/s
Stream #0.0(eng): Audio: adpcm_ima_qt, 48000 Hz, stereo
Stream #0.1(eng), 23.98 fps(r): Video: dvvideo, yuv411p, 720x480
Output #0, flv, to '/tr-Bigteest.mov.ff.flv':
Stream #0.0, 23.98 fps(c): Video: flv, yuv420p, 480x272, q=2-15, 640 kb/s
Stream #0.1: Audio: mp3, 44100 Hz, stereo, 192 kb/s
Stream mapping:
Stream #0.1 -> #0.0 [sync #0.0]
Stream #0.0 -> #0.1 [sync #0.1]
[mp3 @ 0x54340c]lame: output buffer too small (buffer index: 140, free bytes: 2164)
bench: utime=39.340s
video:3723kB audio:5293kB global headers:0kB muxing overhead 55.664167%
/Applications/ffmpegX.app//Contents/Resources/flvtool2:2:in `require': no such file to load -- flvtool2 (LoadError)
from /Applications/ffmpegX.app//Contents/Resources/flvtool2:2


This is what I got when I tried to replicate the exact same thing but with a normal speed soundtrack (opened up aiff in audacity, saved as WAV, ran through compressor as a movie with IMA 4:1, and then opened up the video file, extracted the video, and added the copied video to the isolated audio file. Still comes out as too fast

FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
Thu Feb 28 06:41:13 PST 2008
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/trnewzies.mov':
Duration: 00:03:30.8, start: 0.000000, bitrate: 23425 kb/s
Stream #0.0(eng): Audio: adpcm_ima_qt, 48000 Hz, stereo
Stream #0.1(eng), 23.98 fps(r): Video: dvvideo, yuv411p, 720x480
Output #0, flv, to '/trnewzies.mov.ff.flv':
Stream #0.0, 23.98 fps(c): Video: flv, yuv420p, 480x272, q=2-15, pass 1, 650 kb/s
Stream #0.1: Audio: mp3, 44100 Hz, stereo, 192 kb/s
Stream mapping:
Stream #0.1 -> #0.0 [sync #0.0]
Stream #0.0 -> #0.1 [sync #0.1]
[mp3 @ 0x54340c]lame: output buffer too small (buffer index: 197, free bytes: 2107)
bench: utime=37.295s
video:3725kB audio:4651kB global headers:0kB muxing overhead 59.896579%
FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/trnewzies.mov':
Duration: 00:03:30.8, start: 0.000000, bitrate: 23425 kb/s
Stream #0.0(eng): Audio: adpcm_ima_qt, 48000 Hz, stereo
Stream #0.1(eng), 23.98 fps(r): Video: dvvideo, yuv411p, 720x480
Output #0, flv, to '/trnewzies.mov.ff.flv':
Stream #0.0, 23.98 fps(c): Video: flv, yuv420p, 480x272, q=2-15, pass 2, 650 kb/s
Stream #0.1: Audio: mp3, 44100 Hz, stereo, 192 kb/s
Stream mapping:
Stream #0.1 -> #0.0 [sync #0.0]
Stream #0.0 -> #0.1 [sync #0.1]
bench: utime=37.339s
lame: output buffer too small (buffer index: 197, free bytes: 2107)
video:3725kB audio:4651kB global headers:0kB muxing overhead 59.892914%
/Applications/ffmpegX.app//Contents/Resources/flvtool2:2:in `require': no such file to load -- flvtool2 (LoadError)
from /Applications/ffmpegX.app//Contents/Resources/flvtool2:2

[Case]

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tr-Bigteest.mov':
Duration: 00:04:00.0, start: 0.000000, bitrate: 20632 kb/s
Stream #0.0(eng): Audio: adpcm_ima_qt, 48000 Hz, stereo
Stream #0.1(eng), 23.98 fps(r): Video: dvvideo, yuv411p, 720x480

That is a weird source file you have there. DV video shouldn't be 23.976 fps (but 29.97 for NTSC); DV shouldn't have compressed audio. Not sure if it relates directly to your conversion trouble, tho'.

/Applications/ffmpegX.app//Contents/Resources/flvtool2:2:in `require': no such file to load -- flvtool2 (LoadError)
from /Applications/ffmpegX.app//Contents/Resources/flvtool2:2

Install flvtool2 to avoid this error and to include metadata in your FLV file, so that web players know more about your FLV file (e.g. support for reverse timer).

the sound is too fast

You could try to set Decode with QT in ffmpegX, to see if the output syncs better that way.
Or try keeping the audio at 48000 Hz.

[sigpikul]

My file starts off as HDV 1080p, which nobody supports, so thats why I'm bringing it to DV. Is there a better way I should be converting to my source file? I want to preserve the quality as much as possible, even though my end result is 480x270 with a bitrate of 650. I'm working with final cut studio 2 on a macbook pro.

I tried changing the sample rate and installing that little piece of software you gave me, it went a few seconds into encoding and then gave me a new error message.

FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Thu Feb 28 10:43:22 PST 2008
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/Sig/Desktop/TrAILE2.mov':
Duration: 00:03:30.9, start: 0.000000, bitrate: 25160 kb/s
Stream #0.0(eng), 23.98 fps(r): Video: dvvideo, yuv411p, 720x480
Stream #0.1(eng): Audio: alac, 44100 Hz, stereo
Output #0, flv, to '/Users/Sig/Desktop/TrAILE2.mov.ff.flv':
Stream #0.0, 23.98 fps(c): Video: flv, yuv420p, 480x272, q=2-15, pass 1, 650 kb/s
Stream #0.1: Audio: mp3, 44100 Hz, mono, 160 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
[alac @ 0x54340c]FIXME: unimplemented sample size 32
[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
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[alac @ 0x54340c]FIXME: unimplemented, unhandling of wasted_bytes
/bin/sh: line 1: 544 Segmentation fault /Applications/ffmpegX.app//Contents/Resources/ffmpeg -i /Users/Sig/Desktop/TrAILE2.mov -y -map 0.0:0.0 -f flv -vcodec flv -b 650 -aspect 16:9 -s 480x272 -r ntsc-film -g 240 -me epzs -qmin 2 -qmax 15 -acodec mp3 -ab 160 -ar 44100 -ac 1 -map 0.1:0.1 -benchmark -pass 1 -passlogfile /Users/Sig/Desktop/TrAILE2.mov.ff.flv /Users/Sig/Desktop/TrAILE2.mov.ff.flv

[sigpikul]

Ok so I switched to Mpeg4 for my source file, 44.1k IMA 4:1 audio compression, and used quicktime to decode, trying to bring the whole thing down to 160kb mp3. Getting the same result, here it is:

Encoding started on Thu Feb 28 11:05:24 PST 2008
FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Seems that stream 0 comes from film source: 1000.00 (1000/1) -> 23.98 (24000/1001)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/Sig/Desktop/TRAILER44.mov':
Duration: 00:03:30.8, start: 0.000000, bitrate: 8320 kb/s
Stream #0.0(eng), 23.98 fps(r): Video: mpeg4, yuv420p, 1920x1080
Stream #0.1(eng): Audio: adpcm_ima_qt, 44100 Hz, stereo
Output #0, flv, to '/Users/Sig/Desktop/TRAILER44.mov.ff.flv':
Stream #0.0, 23.98 fps(c): Video: flv, yuv420p, 480x272, q=2-15, pass 1, 650 kb/s
Stream #0.1: Audio: mp3, 44100 Hz, stereo, 160 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 70F329, score= -1699)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 705328, score= -21420)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 7F5A92, score= -21431)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187684 left 7EF243, score= -21498)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 7F52D2, score= -21509)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187684 left 7002A1, score= -21576)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 707A8A, score= -22753)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187684 left 70CAF0, score= -22877)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 7FF2E2, score= -22888)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187687 left 7E2483, score= -135787)
[mpeg4 @ 0x54340c]concealing 5 DC, 5 AC, 5 MV errors
[mp3 @ 0x54340c]lame: output buffer too small (buffer index: 498, free bytes: 1806)
video:16910kB audio:3878kB global headers:0kB muxing overhead 0.951350%
bench: utime=87.248s
FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Seems that stream 0 comes from film source: 1000.00 (1000/1) -> 23.98 (24000/1001)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/Sig/Desktop/TRAILER44.mov':
Duration: 00:03:30.8, start: 0.000000, bitrate: 8320 kb/s
Stream #0.0(eng), 23.98 fps(r): Video: mpeg4, yuv420p, 1920x1080
Stream #0.1(eng): Audio: adpcm_ima_qt, 44100 Hz, stereo
Output #0, flv, to '/Users/Sig/Desktop/TRAILER44.mov.ff.flv':
Stream #0.0, 23.98 fps(c): Video: flv, yuv420p, 480x272, q=2-15, pass 2, 650 kb/s
Stream #0.1: Audio: mp3, 44100 Hz, stereo, 160 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 70F329, score= -1699)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 705328, score= -21420)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 7F5A92, score= -21431)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187684 left 7EF243, score= -21498)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 7F52D2, score= -21509)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187684 left 7002A1, score= -21576)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 707A8A, score= -22753)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187684 left 70CAF0, score= -22877)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187140 left 7FF2E2, score= -22888)
[mpeg4 @ 0x54340c]concealing 8160 DC, 8160 AC, 8160 MV errors
[mpeg4 @ 0x54340c]slice end not reached but screenspace end (187687 left 7E2483, score= -135787)
[mpeg4 @ 0x54340c]concealing 5 DC, 5 AC, 5 MV errors
[mp3 @ 0x54340c]lame: output buffer too small (buffer index: 498, free bytes: 1806)
bench: utime=86.823s
video:16417kB audio:3878kB global headers:0kB muxing overhead 0.974455%
/Applications/ffmpegX.app//Contents/Resources/flvtool2:2:in `require': no such file to load -- flvtool2 (LoadError)
from /Applications/ffmpegX.app//Contents/Resources/flvtool2:2