pyTivo Discussion Forum

wgw · Joined: 06 Jan 2008 Posts: 225

I got tired of adding mapping commands to ffmpeg_pram to select the eng audio track so I decided to add preferred language support to pytivo.

pytivo.conf parameter audio_lang sets the preferred language track used by pyTivo. ffmpeg/pytivo defaults to the first audio stream. Specifying this parameter, tells pyTivo to use the first audio stream that matches this entry if more than one audio stream exists. If your video source does not have language tags (ie. eng, ger, spa), you may specify the audio stream number reported by ffmpeg (ie. 0.1, 0.2 ect.). Stream references like 0x80, 0x81, etc. may also be specified. pyTivo will transcode the file if necessary to obtain the preferred language track.

Example settings:

audio_lang = eng
audio_lang = en
audio_lang = 0.2
audio_lang = 0x81

wgw · Joined: 06 Jan 2008 Posts: 225

You can now also use the Override feature in combination with the preferred audio language feature to force pytivo to use a particular audio stream for all files in a folder.

For example, let's say you have set your preferred audio language to 'eng'. And you have a folder in which you know all the files in the series have eng as the third audio track, but only half the files have the eng tag required for pytivo to detect the eng audio track. Rather than temporaily change your audio_lang setting to 0.3 to transfer the files that do not have the eng audio tag, you can create a txt file named default.txt in the folder and add the following line.

sicklybutsexy · Joined: 05 Mar 2008 Posts: 74 Location: chicago

If the files are mpegs this doesn't really come into play as they can't support more than one audio stream, right?

wgw · Joined: 06 Jan 2008 Posts: 225

Yes, mpegs will support multiple audio tracks. Try MpegStreamClip. I used it to copy a DVD to mpeg with all the audio tracks to test the 0x81, 0x82 track references with pytivo.

sicklybutsexy · Joined: 05 Mar 2008 Posts: 74 Location: chicago

I seem to run into problems sometimes when I use Videoredo because if I don't manually change the audio track it will sometimes use the director's narration, etc... Will this fix that?

wgw · Joined: 06 Jan 2008 Posts: 225

Yes, as long as your file was created with more than one audio track.

sicklybutsexy · Joined: 05 Mar 2008 Posts: 74 Location: chicago

doesn't look like you can make an mpeg with multiple audio tracks with videoredo. How do you do it with mpegstreamclip? the video I made from vob to mpeg only contains one audio track when I wanted it to contain 2.

wgw · Joined: 06 Jan 2008 Posts: 225

No, VideoRedo only saves one. Mpeg StreamClip saves all tracks by default. Or you can delete the tracks you don't want. Just open the DVD and select Save as mpg. No need to purchase the MPEG2 Playback Component the program warns you about. I only use the program to process files and steams and don't need to be able to view them. Although for the $30 Apple wants for the Playback Component, I guess this would make a cheaper editor than VideoRedo.

sicklybutsexy · Joined: 05 Mar 2008 Posts: 74 Location: chicago

Maybe it's only with a DVD then. But I saved a vob file using mpegstreamclip and it only saved one out of 2 audio tracks by default. I guess it's only if you're going from dvd to mpeg and not vob to mpeg?

wgw · Joined: 06 Jan 2008 Posts: 225

Go to Preferences and uncheck the box that says convert only one audio stream. I probably unchecked that box on my install a while back.

sicklybutsexy · Joined: 05 Mar 2008 Posts: 74 Location: chicago

Ah! I had the last most stable version but the version you're talking about is beta. So I download the beta one and it works. thanks for your help.

edtee · Joined: 08 Feb 2008 Posts: 19

Thank you. Very Happy

This has been one of the biggest/updates additions to pytivo, I wanted, ever since I first intalled it on my PC. Definitely will try this out and use it lots. I do have one question, or two, though...
I always want english audio if available, but I have many files that use the code "ENG" and some use "EN". If I set my config file to EN, will your code work properly with all files since, EN is a partial match for ENG? If such a partial match is not the way to set it up... Is there a preference order for this kind of situation? ie audio_lang = eng , en Would look for "eng" first and if no match use "en" as a secondary choice, if present.

Once again, thanks for this feature and all your work.

wgw · Joined: 06 Jan 2008 Posts: 225

Yes, if you set audio_lang to en, it will match en or eng.

I'm also thinking about making some changes to the way I set this up. Currently you can only specify one Override statement per file. This might be a bit limiting if you like to switch back and forth between two languages. It would also prevent you from flagging both your main track as 'eng' and your directors commentary track as 'dir', so that you could isolate and select the commentary when desired.

I'm going to look into changing it so that you can add Override statements to define all the audio tracks in a file. You could then add multiple statements like the following and then select any available language track by changing the config to a new language.

wgw · Joined: 06 Jan 2008 Posts: 225

I've updated the audio mapping so that the language tags for all audio streams can be replaced with Override statements. The syntax has changed a bit. Below are example override statements one might use to define all the tracks on a dvd.

sicklybutsexy · Joined: 05 Mar 2008 Posts: 74 Location: chicago

I'm trying to get a handle on the audio tracks option and have been having problems. For instance in my "global server settings" I put "0x80" so that that would be the stream that was always be encoded. However, I've been ruuning into issues with the screen becoming jumbled and a starting and stopping phenomenon which stops if I take the "0x80" off. Right now I'm transcoding a movie using mpegstreamclip and the audio track says "130 AC3 3/2". Is that what I should be putting in my global server settings? Thanks for your help in advance...