I have some ancient Adobe Shockwave files with.dcr file extensions. I managed to view them with the official Adobe player (download the full version, not the slim version). However, Chrome refuses to open the files (showing the save file dialog instead). Other browsers can view the Shockwave files, but there are other problems like: No audio.
Introduction
The Liberty Recorder creates audio files with a 'dcr' extension. A dcr file is a multi-channel audio / video file with the audio data saved in standard compressed audio file format. The .dcr files could not be given a .wav extension, because other .wav players such as Windows Media Player are not designed to recognize the multi-channel data tracks found within the dcr files.
DCR files has been not been completely download from the internet (only a part of the data has been downloaded) Currently used user account hasn’t been granted necessary privileges to open DCR files (should that be the case, please contact your system administrator or IT specialist) DCR file was being copied from a corrupted storage device. The program helps you import files from DCR file format or open a user-defined URL, export a file or part of a file directly to an audio CD, save audio stream to WMA/WMV, WAV, AVI or DCR file. Dcr File Player free download - GOM Player, MP4 Player, File Shredder, and many more programs.
Both .wav files and .dcr files save the audio data in a compressed PCM (.wav) format. Saving the audio data in a standard, compressed format allows any Windows PC to playback the audio using the Liberty Player.
Compression
The Liberty Recorder can use any standard compression algorithm installed onto the PC. This includes any algorithm provided by the Windows Operating System and any compression algorithm that might be added to the PC. Various compression algorithms have been a standard component of all Windows Operating Systems since Windows'95 and any of these may be used with the Liberty Recorder. These algorithms include, but are not limited to Microsoft ADPCM, and D.S.P. Group Truespeech.
Speex is another compression algorithm that will work with the Liberty Recorder. SPEEX is an Open-Source, patent-free compression algorithm specifically written to record the spoken word, not music. It delivers a high compression rate with very good sound quality. The Speex algorithm may be downloaded using this link. If the Speex codec is used, then please use of one of the Q4 mono (Quality 4) or higher recording attributes. We suggest recording with the Attributes set at '16.8 kBit/s, 16.0 kHz, Mono Q5'. Further information about Speex may be obtained from www.speex.org.
The following chart provides details on disk space requirements for 4-channel recordings:
# of courtrooms ; Compression Algorithm 1 courtroom 4-ch; Microsoft ADPCM 1 courtroom 4-ch; Speex 1 courtroom 4-ch; D.S.P. Group Truespeech | per 6 hr day 480mb 180mb 120mb | per 5 day week 2.4gb 900mb 600mb | per 50 week year 120gb 45gb 30gb |
* The MS ADPCM and D.S.P. Group Truespeech compression algorithms have been a standard component of all Windows systems, since Windows'95.