| 594 | | choose the default audio bit rate used in transcoding. The |
|---|
| 595 | | default is likely fine for most users. Users with HD units and high |
|---|
| 596 | | quality videos to transcode will want to use higher value. Higher |
|---|
| 597 | | values may slow down transcoding and will increase the file size. |
|---|
| 598 | | Increased file sizes take up more room on the <a class="wiki" href="/wiki/TiVo">TiVo</a> and take longer to transfer |
|---|
| 599 | | over the network.<br> |
|---|
| | 592 | choose the default audio bit rate used for transcoding. The |
|---|
| | 593 | default is likely fine for most users. 384k is the minimum |
|---|
| | 594 | recommended for ac3 audio. For S2 Tivos, you may want to lower |
|---|
| | 595 | this setting to 192k and set audio_ch=2 to slightly reduce the |
|---|
| | 596 | file size. See audio_codec for more info.<br> |
|---|
| 985 | | used by ffmpeg. The default setting should work fine for most transfers |
|---|
| 986 | | unless the default audio_codec is changed.<br> |
|---|
| | 982 | used by ffmpeg. ffmpeg will retain the same number of |
|---|
| | 983 | channels as the source file by default. The default setting should |
|---|
| | 984 | work fine for most transfers unless the default audio_codec is changed. |
|---|
| | 985 | Change this setting to 2 if you do not want to retain 5.1 audio. A bug |
|---|
| | 986 | in ffmpeg will sometimes move the center audio channel to the left or |
|---|
| | 987 | right speaker. Setting this option to 2, on an as needed basis, or |
|---|
| | 988 | permanently, will correct this at the loss of 5.1 audio. But this |
|---|
| | 989 | should only be necessary on rare occasions where the source file is an |
|---|
| | 990 | mkv or xvid with ac3 5.1 audio bitrate above 448k.<br> |
|---|
| 1004 | | <strong>Description:</strong> Sets the audio codec used by ffmpeg. |
|---|
| 1005 | | pyTivo checks the audio codec and bitrate of the source and uses |
|---|
| 1006 | | -acodec copy if it is compatible. Otherwise the Default Setting is |
|---|
| 1007 | | used. Allowing pyTivo to select -acodec copy whenever possible |
|---|
| 1008 | | will generally produce the best results. This will also prevent the |
|---|
| 1009 | | center audio channel from being moved to the right front speaker |
|---|
| 1010 | | by ffmpeg when transferring some mkv's and xvid's.<br> |
|---|
| | 1008 | <strong>Description:</strong> Sets the audio codec used by |
|---|
| | 1009 | ffmpeg during transcoding. |
|---|
| | 1010 | pyTivo defaults to ac3 in order to retain 5.1 audio should the |
|---|
| | 1011 | source contain it. pyTivo also checks the audio codec and bitrate |
|---|
| | 1012 | of the source and uses '-acodec copy' if it is compatible. Otherwise |
|---|
| | 1013 | the Default Setting is used. Specifying an audio codec will disable |
|---|
| | 1014 | these features and pyTivo will re-encode all audio using the codec |
|---|
| | 1015 | specified.<br> |
|---|
| | 1016 | |
|---|
| | 1017 | Allowing pyTivo to select '-acodec copy' whenever possible will |
|---|
| | 1018 | generally produce the best results. This is meant to eliminate |
|---|
| | 1019 | garbled audio during transcoding when the source contains audio |
|---|
| | 1020 | glitches that cause ffmpeg to lose synchronization. This will also |
|---|
| | 1021 | prevent the center audio channel from being moved to the right |
|---|
| | 1022 | front speaker by ffmpeg when transferring mkv's and xvid's with audio |
|---|
| | 1023 | bitrate of 448k or less.<br> |
|---|
| | 1024 | |
|---|
| | 1025 | You may want to change this setting to mp2 if you only have an S2, |
|---|
| | 1026 | or have specified a per tivo section for an S2, and do not wish to |
|---|
| | 1027 | retain 5.1 audio for possible transfer to an S3 Tivo or back to the |
|---|
| | 1028 | PC should the need arise. This will slightly reduce the amount of |
|---|
| | 1029 | disk space used and allow for more recordings on an S2 Tivo. |
|---|
| | 1030 | In this case, you will want to specify audio_codec=mp2, audio_ch=2, |
|---|
| | 1031 | and audio_br=192k. These are the settings normally used by the S2 |
|---|
| | 1032 | for recordings.<br> |
|---|
