Not working for me...

[Carita]

Hi everybody!

I start getting creasy. Want to try ffmpegX. Ok it is installed and i say want to try. Window is open and I put my file on it : .mov to .flv. give format details for flv. Say Encode and it takes less dans 1 sec to finish. At the end I have this .flv file containing anything. Could you give me any advice please?

[Case]

Please provide the Process Information log, accessible by pressing the blue "i" in the Progress window. That should give a proper clue as to why a conversion failed.

[Carita]

Hi! there it is :

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
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x5597b8]negative ctts, ignoring
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/carita/Desktop/Gelis1.mov':
Duration: 00:04:34.2, start: 0.000000, bitrate: 5193 kb/s
Stream #0.0(eng): Audio: aac, 44100 Hz, stereo
Stream #0.1(eng), 25.00 fps(r): Video: h264, yuv420p, 1280x720
Codec type mismatch for mapping #0.0 -> #0.0
Sun Apr 17 14:29:12 CEST 2011

Thanks!

[Case]

Input #0, mov:
Stream #0.0: Audio
Stream #0.1: Video
Codec type mismatch for mapping #0.0 -> #0.0

The audio stream is listed before the video stream. This version of ffmpeg expects it the other way around by default, causing a codec mismatch when trying to convert the first stream to video and the second stream to audio.
The normal solution is to tell ffmpegX about the stream order by setting "Invert mapping" in the Audio tab (for conversions with ffmpeg presets). However, this is known to produce bad FLV files, with stuttering video for playback with the Flash player web browser plugin.

One workaround has been to re-order the streams before letting ffmpegX do a conversion, e.g. using QuickTime Pro.

But you don't have to use FLV for web video, as mp4 (H.264/AAC) works very well, and has far better compression (about 52% of the bitrate at comparable quality). Unless your upload service for some reason requires FLV...

[Carita]

Thanks Case but I dont really understand the answer ant the solution, I'll try invert mapping.... I need .flv files...

[Carita]

Ok I invert and it worked but I have an extraordinary awful film en .flv... Ok There is something I don't understand, this is supposed to be a program to encode ALL kind of formats into ALL kind of formats right? What am I missing!

[Case]

... but I have an extraordinary awful film en .flv...

Describe awful.

There is something I don't understand, this is supposed to be a program to encode ALL kind of formats into ALL kind of formats right? What am I missing!

As mentioned above, conversion to FLV while having to invert mapping isn't producing smooth results like we'd want to.

[Carita]

Ha! h!a ha! sorry I'making big efforts to express myself in english!! Awfully pixelized and very bad quality in general!
I already found a solution (not perfect but much better) with Mozila Firefox. Expecting to find the good way...
Thanks for answering case

[Case]

Awfully pixelized and very bad quality in general!

The default for FLV is 320x240, 12 fps, 200 kbps. If you change the frame size or framerate, then you should adjust the bitrate also.
Could it be that you encoded to higher settings but at the same low bitrate? That would explain the pixelation.

Anyway, good that you did find another solution.

[Carita]

Thanks Case, new export inverting audio and adjusting to a higher bitrate is really much better but still not perfect. Lecture is not fluid. My video size is 1280 X 720, 25fps, 6000 kbps

[Case]

Lecture is not fluid.

As said, that is a known bug.
The previously mentioned 'workaround' link explains how to alter the source file, in order to prevent this bug, if you have QuickTime Pro.
Alternatively you could use a different application that uses a newer version of ffmpeg to convert to FLV, or an application that converts to FLV without the use of ffmpeg. Sorenson Squeeze, Adobe Flash, iSquint, VisualHub, iFFmpeg (?), ffmpeg command line, mencoder command line, the gazillion chinese knock-offs illegally making use of ffmpeg, to name a few.

My video size is 1280 X 720, 25fps, 6000 kbps

6000 kbps seems a bit high. 5175 would be a recommended bitrate for FLV video at that size and framerate, according to the developer. Your video would have 16% extra bytes to try to make it look extra good.