I did a system restore and fortunately brought the vlc icon back and the videos played fine on the computer. After uninstalling, the videos on the desktop still remained as unknown files. Then I uninstalled MP4Box (from the uninstaller menu). I tried to play the unknown file, but Windows didn't know what to do with it. After, installing, the vlc icon on both videos on the desktop disappeared (and become unknown file icon). I downloaded and clicked to install the exe (I thought strange because quite large at 40MB). I then decided to use the latest MP4Box (command line). So the audio and video soon got completely out of sync. In both cases, when playing back the two videos with vlc, the video stretched about 5 minutes, but the audio stayed the same. I demuxed and then muxed the original video file and then repeated with the "fixed" file. As a test of demuxing/muxing, I used My MP4Box GUI (which I already had installed on this xp computer). To test this, mux the original video track from the downloaded mp4 with the re-encoded audio track from vidcoder. Extract the elemental streams and remux with mp4box. If the h.264 profile is the same, maybe a strictly iso compliant file might play. But if it has played avc files in the past, there might be some other issue with this particular file. Most cheap chinese players haven't expended for the cost of a license. But the Ematic may not support avc at all. There is a mp4 version that should not have this problem. If the dash version was downloaded, ffmpeg will "fix the headers" via codec copy. If you could give me a few possible ffmpeg codes that I could try on the video, that would be helpful. Is there an ffmpeg code that doesn't re-encode that will make the video play in the media player? To get the video to play in the media player, I have to re-encode it with Vidcoder using default settings. This is the first time I couldn't get a video to play in the media player. Neither video will play in my Ematic media player.
What does the ffmpeg code do to the video so that it plays with Media Player Classic? I couldn't see any difference between the two videos using analyzers G-spot and MediaInfoXP.Īlso, another question.
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