audio formats

[cheda]

hi, i have a couple of movies in the .mp4 format, i want to reencode them, to add the subtitles so they show when i watch the movies on apple tv. i am using handbrake 0.9.6, and when i open the file, under the audio tab on source it says English (aac) (5.1 ch), what audio codec, mixdown, samplerate, and bit rate should i use in order to keep the audio in sorround sound.

i will be using apple tv 3rd generation and a technics receiver capable of dolby pro-logic, dolby digital, and DTS to playback the audio,

tY

[Cornucopia]

First and foremost: YOU SHOULD NOT RE-ENCODE. If you want subtitles, create them separately and then add them to the original title by re-muxing!

Scott

[cheda]

just for info why shouldnt i re-encode? and with what software can i re-mux?

[cheda]

First and foremost: YOU SHOULD NOT RE-ENCODE. If you want subtitles, create them separately and then add them to the original title by re-muxing!

Scott

just for info why shouldnt i re-encode, and what software is good for remuxing? i have downloaded the subtitles in .srt file

[Selur]

• Text formats and extensions:
  • SRT Subtitles (.srt)
  • SUB Subtitles (.sub)
  • QuickTime TeXML (.xml) – cf QT documentation
  • GPAC Timed Text (.ttxt)

The conversion syntax is MP4Box -add inputFile destinationFile. This option is used to import media from several sources. You can specify up to 20 -add in common MP4Box builds. This process will create the destination file if not existing, and add the track(s) to it. If you wish to erase the destination file, just add the -new option.

source: http://gpac.wp.mines-telecom.fr/mp4box/mp4box-documentation/

MP4Box -add  "Path to .srt File" "Path to exisiting mp4 file"

should do the trick.


Cu Selur


Ps.: most of the GUIs for MP4Box should also be able to do it,....

[Cornucopia]

If you re-encode, you lose quality. Re-muxing like we've suggested DOES NOT lose quality. I guess if you WANT to lose quality, go ahead.

Scott

[cheda]

i was able to do it. thank you all for your replies