Fixing FLV files (live stream recordings) with Fix FLV tool of Replay Media Catcher

[any ANONYMOUS forum user]

Please help me fixing FLV files (live stream recordings) with Fix FLV tool of Replay Media Catcher 4. I can't find any tutorials for that.

Originally Posted by ApplianFAQ

Sometimes when recording webcams or other live streams the site does not provide meta data. In particular the duration in the meta data is important in FLV files because it allows you to search forward in the FLV file in many players. Without it you can not rapidly seek forward in the file.

Sometimes a recorded live streams/webcams video and audio may also be out of sync because the server is sending incorrect timestamps

FAQ on the Applian main site about using Fix FLV with live streams:

Originally Posted by ApplianFAQ

After a live stream is recorded, the Fix FLV tool will run automatically in order to add the duration metadata in (if its missing). This allows the file to be seeked. If the FLV file plays back at the wrong speed or out of sync, you need to fix the timestamps manually. Here's how:

1. Click Tools -> Fix FLV and select the file to be fixed.
   Or, if the file is still in Replay Media Catcher's main list, right-click on it and select Fix FLV.
2. Expand the File Contents section
   
   
   
3. Set timestamp to 15 and click "Fix Time".

If the resulting file is still fast or slow then the time stamp can be adjusted further. But, 15 usually does the trick. Be sure to click the Fix Time button, or your changes will not be applied.

[placebo]

i know Replay Media Catcher for 1 year but only knew/saw the "Fix Duration"-button. Today is the first time that i see the "Fix Time"-button. For this to happen one needs to expand the tab "File Contents".

People with bad eyes dont see that there are 2 tabs.

One is called "Meta Data". And the second one (the other one) is called "File Contents". "Meta Data" tab offers a "Fix Duration"-button, whereas the "File Contents" tab offers a "Fix Time"-button.

Just put your glasses on.

Originally Posted by placebo

i know Replay Media Catcher for 1 year but only knew/saw the "Fix Duration"-button. Today is the first time that i see the "Fix Time"-button. For this to happen one needs to expand the tab "File Contents".

People with bad eyes dont see that there are 2 tabs.

One is called "Meta Data". And the second one (the other one) is called "File Contents". "Meta Data" tab offers a "Fix Duration"-button, whereas the "File Contents" tab offers a "Fix Time"-button.

I have overlooked this option at first. I know that many users had the same problem as we, and I'm glad that it will be changed very soon. You write a lot to Craig, so you probably know about it

[placebo]

Craig? who is that? ( yes he's notified! )

Lol, i still cant believe it ... that for 5 days i had been using the FLV Fixer but never discovered the other tab. LOL!!

[silentjafh]

OMG I wish i knew about this 2 years ago.

Thanks to all esp placebo and Stream Recorder

Way to go !!!!!!!!!!!!

Now i only have 1000 files to fix

[silentjafh]

After some testing I have found between numbers 30-37 gives very good results for MyFreeCams, esp if you know how to read the numbers in the columns - Tools/Fix FLV/File contents. The numbers are secs of the record in format XXXX.XXXX.

So u if know the time length of yr record say 25.48 mins that equals 1548 secs. So change the fix flv number (try say 30) and after hitting ok and the number changes in the column check at the end. If number is less than 1548.XXX, increase the fix FLV number, or if the column displays a number greater than 1548.XXX decrease until you can arrive as close as you can to 1548.XXX.

As Applian Fix FLV does not allow fractions or decimals it will always be out by a small margin but this does effect the file.

Trust this extra info helps.

[placebo]

i am placebo.
personally, i dont fix FLV's.

so here is what i do (if you're interested in placebo's experience and wisdom ):

1. open the original FLV with Jaksta (RMC 4) Fix FLV module.
2. note down on a piece of paper the so-called "videoframerate", as given by Jaksta. it is the most truthful number you can get. dont believe the numbers given by MediaInfo or by FLVExtract (the latter gives 2 numbers).
3. Extract the FLV contents (often: *.264, *.aac) with FLVExtract. It's a lossless extraction process.
4. Use Yamb to recombine the raw audio and raw video. If you are asked to enter a frame rate (the yamb default is: 25.0000), enter the number which you had written down on the piece of paper. For this you must find the piece of paper first!
5. The end result is a perfect(!) losslessly created MP4 file.

This whole procedure is fast because it doesnt involve encoding or reencoding.

DONT FIX FLV FILES EVEN IF IT IS POSSIBLE.
AND DONT CONVERT FLV TO MP4 LOSSLESSLY EVEN IF IT IS POSSIBLE. If you have a 1400MB-sized HD FLV-file (e.g. from Amazon Instant Video, HD) and try both paths (flvextract&yamb vs. lossless conversion), then you'll know )

See also:
http://stream-recorder.com/forum/fix...les-t5751.html
http://stream-recorder.com/forum/rep...flv-t4605.html
http://stream-recorder.com/forum/mer...aac-t8800.html

[sebastian]

Thanks, that often worked for me placebo.

[placebo]

Originally Posted by placebo

1400MB-sized HD FLV-file (e.g. from AMAZON Instant Video, HD)

danks Sebastian, but that one (amazon) is over