I really did try to sift through the help topics to figure this out on my own but couldn't find it. i'm sure someone here can look at my log and figure it out easily...maybe not. i have tried both MP4 transcoding enabled and not enabled. i can get audio to play on the MP4 file but no video. here is the log, lots more but maybe this is relevant part:
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) compatible_brands: isomavc1mp423gp5
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) author : The Dead Texan
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) title : Dekalog
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) album : unreleased
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) Duration: 00:02:10.06, start: 0.000000, bitrate: 366 kb/s
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) Stream #0.0(und): Audio: aac, 32000 Hz, stereo, s16, 110 kb/s
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) Stream #0.1(und): Video: h264, 249 kb/s, 14.99 tbr, 14985 tbn, 29970 tbc
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) Stream #0.2(und): Data: mp4s / 0x7334706D, 0 kb/s
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) Stream #0.3(und): Data: mp4s / 0x7334706D, 0 kb/s
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) swScaler: Unknown format is not supported as input pixel format
[2011-05-08 23:19:47,995] DEBUG InputStreamReaderThread - (c:\subsonic\transcode\ffmpeg) Cannot get resampling context
