Thanks A LOT!
But: you said the original video is FLV. Some FLV files are actually MP4 streams embedded on FLV containers. I know a trick to extract the original stream without re-encoding. If it was ripped from Youtube then that FLV file is 100% a MP4 file undercover.
I hope you didn't delete the original FLV file. To extract the MP4 file follow these steps:
- Install VLC Player and run it.
- Go to Media -> Convert/Save. It will open a window. Click Add... to add the FLV file and then Convert/Save button.
- It will open another window. Click Browse... and select the destination folder and a new filename (add manually the .mp4 extension).
- Click the first button (with tools icon) near Video-H.264+AAC (MP4).
- It will open another window. At Video codec tab check Keep original video track and at Audio codec tab check Keep original audio track and click Save.
- Finally click Start button. Wait until the video is copied (until the word Streaming disappear from window title; this is important). Check the result (esp. the video to be in sync with audio).
That's it. You'll get a MP4 file without losing any quality. Please upload the result.
PS: if you don't want to extract the MP4 file, please upload also the original file. Xvid is weaker than MP4 AVC.
Yeah I already have VLC installed, I could see that the video format was MP4 when I opened it up in there to check the format and resolution etc but I wasn't aware there was a way of just changing the container. I followed your instructions but the exported video when you open it up is jumpy (constantly jumping backwards and forwards a few frames like some kind of trippy nightmare in quicktime - In VLC for some reason it doesn't jump as badly but it doesn't look right either), I don't know if that has something to do with the fact it was saved from a stream so there's no real defined beginning and end to the original video file