WMV to MP4 Syncing

[jimbb]

Hi,

Im having syncing issues when converting WMV movies to MP4s.
Read a lot of the previous posts on the topic but everything i tried hasnt worked. hopefully someone here can help me.

Out of all the software ive used i find mediacoder the best so hopefully I can use that app to resolve the issue.
I also have: Freemake, AVS Video Converter

I typically convert to MP4 using Video - ABR or CBR, Audio - MP3 (lame mp3).
Ive tried most of the audio formats in mediacoder but syncing issues remain.

Are their some specific options/encoder I should be using?


Thanks

[El Heggunte]

WMVs often have Variable Frame Rate and badly-joined audio, which are a PITA when you have to convert them to a less-insane format.

First, you should convert the audio to uncompressed WAV correctly, please read

https://forum.videohelp.com/threads/345608-How-to-convert-WMP-v9-(VC-1-Simple-Main)-to-...=1#post2157830

Later, I suggest you apply Avisynth's DirectShowSource( convertfps=true) to the video stream, and finally, remux the re-encoded video and the re-encoded audio into an MP4 file.

HTH.

[jimbb]

thanks will try to test that.

What GUI do you recmnd for ffmpeg? i couldnt figure out how to use it without a GUI. thanks

[jimbb]

Ive tried to use Avanti and WinFF.
Avanti for some reason couldnt locate the ffmpeg files although they were in the correct folder...

Looking at the link you provided I need to:
1) Create a video only file (with no sound) - using ffmpeg
2) Stirp the audio from the original video file - u rcmnded wma2wav but i couldnt figure it out so used Jodix Free WMA to MP3 Converter
3) mix the video and new audio together - what program do u rcmnd for this?

I managed to strip the audio but having a problem creating the Video with no sound in WinFF.
I used the options and receive the below error

1) Output details: MPEG-4, MPEG-4 H.264 video (high quality)
2) FFmpeg command line: ffmpeg -i Video.wmv -c:v mpeg4 -b:v 1800k -vtag divx -an Video1.avi

the error i receive is:

NULL @ 0x319f960 - Unable to find a suitable output format ffmpeg.

if I use command line: -i Video.wmv -c:v mpeg4 -b:v 1800k -vtag divx -an Video1.avi

i get this error: unkown decoder libx264


thanks for the help

[jimbb]

anyone pls? thanks

[Selur]

got an example file of a file you can't reencode sync?
Also do you want .avi files with mpeg-4 asp or .mp4 with mpeg-4 avc as output and is it okay if the output is still vfr (in .mp4 case) or do you need cfr output?

[jimbb]

I would like it as an .mp4 with mpeg-4, dont care if its vfr or cfr as long as the audio is in sync.
by example, you mean the files details? what application can i use for that?

thanks

[Selur]

by example, you mean the files details?

No, I ment a small sample clip, so one can have a look at the problem, since that would help really pinpoint the problem,... i.e. check if the content is really vfr or if there are some broken headers that are the cause of the problem,...
Mediainfo can deliver some basic infos about a file by reading it's starting headers (using the gui, make sure 'Debug' is to level 10, using the CLI make sure to use '--Full'), problem is MediaInfo isn't always right, so a sample would help.