Damian Brunold

Progressive Download von h.264

2010-11-24 15:00 Imagic, Programmieren, Video, Web

Der Flash Player kann h.264 nur progressive herunterladen, wenn die moov Daten am Anfang des Streams liegen. Hier der Auszug aus der Technote von Adobe:

One important thing about playing an H.264 video file as progressive download is that the moov atom needs to be located at the beginning of the file, or else the entire file will have to be downloaded before it begins playing. The moov atom is a part of the file that holds index information for the whole file. Unfortunately, tools such as Adobe Premiere and After Effects place this information at the end of the file, but Adobe is working to fix this in a future update to the CS3 video production tools. This isn’t an issue for streaming the H.264 video files, however, so Flash Media Server users can breathe easy.

Bei neueren Tools sollte das korrekt gemacht werden, aber ältere Versionen schreiben moov Daten ans Ende.