Help - MeGUI with mp4

[Appu]

I am trying to transcode an mp4 file which contains Mpeg-4 video and AAC audio to another mp4 file which contains H.264 video with audio the same.

Initially I tried to create the Avs file using AViSynth script creator. When I opened the .mp4 file using this it throws an error saying that

DirectShowSource : Couldn't open Input file xxxx.
No Combination of filters could be found to render the stream.

Any idea how to get rid of this problem?

[check]

Can you open the video file in windows media classic?

[Appu]

I could play the file using Mplayer for windows, VLC and GSPOT also opens it properly. Haven't tried windows media classic. Is that important?

[Appu]

It plays with Windows Media Classic also.

[bond]

whats "windows media classic"? mediaplayerclassic doesnt mean much as it has an internal mp4 parser and can also wrap quicktime iirc

therefore try windows media player or graphedit and report whether the file plays in there

[Appu]

windows media classic = media player classic.. Sorry for the confusion..

therefore try windows media player or graphedit and report whether the file plays in there

Tried both Windows Media Player and Graph Edit. Both displays the first frame of the file and stops!. GraphEdit shows that it uses mainConcept MP4 Demux and ffdshow decoder on the video chain.

[bond]

windows media classic = media player classic.. Sorry for the confusion..



Tried both Windows Media Player and Graph Edit. Both displays the first frame of the file and stops!. GraphEdit shows that it uses mainConcept MP4 Demux and ffdshow decoder on the video chain.try install haali media splitter and check whether this fixes the problem

[Appu]

I installed Haali Media Splitter and now everything works.
Thanks Bond!..

The transcoding is under progress now..

[Appu]

The Transcoding is completed. I got an Mp4 file with H.264 video and with out an audio. After that I demuxed the aac audio from the input file and used the Mp4 muxer that comes along with megui for muxing Mp4 file with the aac audio. But observed that the the output of the muxed file is quite large which probably indicates that the video is getting uncompressed during the muxing operation. How do I prevent this?
In the avs script if keep the audio=true then can I get the same audio in the output file?. I thought the audio will get uncompressed.

Anyway I could get the proper outfile using mp4creator ( Part of Mpeg4IP tools) as a muxer.

[check]

the mp4muxer in megui does not touch the streams, it simply copies them. Please check the sizes of the file at each point to find out where the extra size comes from.

[bond]

going via avisynth will always decompress every stream

[Appu]

The meGUI application is no longer working. When I tried to execute it, nothing happens!. No Window Pops up.. Initially VC++ debugger used to pop up because meGUI crashed earlier. I disabled the VC++ Just In Time debugger and now nothing works!.. Did a quick search in the forum and couldn't find anything similar.. Any thoughts?

[check]

try completely removing your megui folder and reinstalling.

[Appu]

try completely removing your megui folder and reinstalling..

This was my last option!.. Since there are no other solution, I think now , I will try that. Hope this problem doesn't happen often!..