How to convert h264/ACC to MPEG4/MP3 with minimal loss of quality

[biskits]

Hello

I record MP4 video on my Nokia N95 which encodes using h264/ACC but the files won't play with sound on my standalone hardware multimedia player (ESS chipset) as it does not support AAC. I therefore want to convert the AAC audio to MP3 whilst retaining the original video quality. After reading this forum I've used the MeGUI tool to convert the MP4 file to a AVI file using Xvid/Lame. The quality is good except for large patches of similar colour e.g. grass which changes to mush, and the audio sometimes runs faster than the video.

My question is what tools / codecs / settings would give the best results in terms of minimising video quality loss and synchronisation. I don't mind if the output file is bigger (well, not too much bigger).

Thanks

[foxyshadis]

Megui is one of the better tools you can use. Sure, there are others, but most won't give you a particularly good result and have the same sync problems, unfortunately - that's just something you have to live with when you go from mkv to avi sometimes. You can minimize that by editing the script megui makes and adding fps=30,convertfps=true to Directshowsource. You can minimize the smudging by just using more bitrate and a higher preset, if your preset is a low one.

[biskits]

Thanks for your help - adding those settings solved the synchronisation problem.