I followed your hints and downloaded Perian and aise-soft-video-converter without success.
As indicated in paragraph 1 above, you would have to download and install the free QT 7 player to take advantage of Perian for direct playback. While Perian may add some conversion support to the QT X AVFoundation-Modernizer-Convert routines embedded in Mavericks, it does not support direct playback of supported codec directly by the QT X player. As to the video converter you mentioned, I have no experience with it.
No one plays directly my AVIs.
Did you try the free VLC Media Player recommended in paragraph 2 of my previous response response above? While this media player does not handle all forms of all possible compression formats, it does handle most common codecs used in AVI file containers and the codec support (FFmpeg codec package) is built into the application so you do not have to worry about modifying the Mac OS X base codec package. The main problem with this work flow is a lack of support for Apple's own proprietary codecs such as thouse automatically installed by Apple's video editing apps.
In the Apple store I found "Smart Converter Pro 2" which converts my AVIs quite well. What I am wondering about is, why can such a program convert the file but cannot show it?. That's strange.
A "conversion" app is designed primarily to transcode the compressed data in one file to a different form of compressed data and, if necessary, re-mux it to a different file container. Most such apps could probably play the source data if programmed do do so but this is not necessarily part of their main function just as most conversion apps do not include the ability to edit the data being converted but could if programmed to do so. (E.g., the QT 7 player becomes both an editing and conversion app when keyed for "Pro" use and configured with the proper required third-party codecs.) Basically, you need to use the right tool for the specific job you wish done. For example:
VLC—free excellent general purpose multimedia player that handles most non-encrypted/non-proprietary compression formats (FFmpeg supported codecs and file containers). Streams/converts files but can produce files not fully compatible with QT apps/devices when used by novice users. Supports output of DTS/AC3 surround sound through Mac optical line for direct decoded playback from computer via appropriately connected audio decoding systems.
HandBrake—free excellent converter for the transcoding any compression formats supportexd by the FFmpeg codec package to QT MPEG-4 and MPEG-4 AVC anamorphic or non-anamorphic, device targeted or custom x.264 encoded long or short addressing files by experienced users. Limited editing capabilities. (E.g., I use this app to turn all of my ripped Blu-ray MKV library files to 720p24 universal H.264/AAC/AC3 DD5.1/Chapter files which play on all of my current Mac OS X systems, mobile device, TV, and "stream" are accessible via various apps/devices on my local network, as well as, the Internet.
QT 7 "Pro" Player—paid upgrade for the free QT 7 video player which can perform extensive editing/conversions and the application of system filters to any supported compression format and file combination using the 32-bit "classic" QT structure still embedded in the Maverics OS to include "legacy" codecs turned back on by the user and Apple "Pro" app codecs installed by the user.
These applications, together with additional codec support (e.g., WMV Flip for Mac "partial" suppoort for formats like 1080i VC-1 and/or AC3 updated component for Perian), handle virtually all of my normal workflow requirements. Thus, once you analyze and categorize the specific requirements of your particular workflow needs, you can select and use the "right tools" to accomplish your specific goals.
I not longer want to solve this part of the problem, I just convert the AVIs and thats my solution.
This is probably the best long-term solution where video quality is not not degraded and/or native playback in QT based apps or on Apple mobile devices is of primary import to the user.
