Converted .avi to .m4v - No sound on ATV2

[kbutler84]

I converted an .avi to .m4v using MKVTools. I checked the file with VLC after conversion and it was fine (but didn't check in iTunes). Now when I play via ATV2 or iTunes, I get video but no sound.

Here is the log from MediaInfo:

General
Complete name : /Volumes/2TB External HDD/iTunes Movies and TV/ESPN 30 For 30/01 - Kings Ransom.avi.m4v
Format : MPEG-4
Codec ID : M4V
File size : 563 MiB
Duration : 50mn 15s
Overall bit rate : 1 566 Kbps
Movie name : Kings Ransom
Track name/Position : 1
Track name/Total : 0
Performer : ESPN 30 For 30
Encoded date : UTC 2011-07-12 13:19:17
Tagged date : UTC 2011-07-13 22:07:28
Cover : Yes
tvsh : ESPN 30 For 30
tven : SE01
tves : 1
sosn : ESPN 30 for 30
desc : The 1988 trade of Wayne Gretzky from the Edmonton Oilers to the Los Angeles Kings and the effect it had on Gretzky, the fans in Edmonton, and the popularity of hockey in Southern California.
pcst : 0
hdvd : 1
stik : 10
rtng : 0
akID : 0
sfID : 0
atID : 0
plID : 0
geID : 0
iTunMOVI : <?xml version="1.0" encoding="UTF-8"?> / <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> / <plist version="1.0"> / <dict> / <key>cast</key> / <array/> / <key>codirectors</key> / <array/> / <key>directors</key> / <array/> / <key>producers</key> / <array/> / <key>screenwriters</key> / <array/> / </dict> / </plist>

Video
ID : 1
Format : MPEG-4 Visual
Format profile : Simple@L3
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : 20
Duration : 50mn 14s
Bit rate mode : Variable
Bit rate : 1 500 Kbps
Maximum bit rate : 2 738 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 24.946 fps
Original frame rate : 25.000 fps
Minimum frame rate : 2.273 fps
Maximum frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.065
Stream size : 539 MiB (96%)
Title : /Users/Butler/Desktop/ESPN 30 For 30/01 - Kings Ransom.avi#1 - Imported with GPAC 0.4.6-DEV (internal rev. 6)
Encoded date : UTC 2011-07-12 13:19:17
Tagged date : UTC 2011-07-12 13:19:55

Audio
ID : 2
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Mode : Joint stereo
Mode extension : MS Stereo
Codec ID : 6B
Duration : 50mn 15s
Bit rate mode : Constant
Bit rate : 64.0 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 23.0 MiB (4%)
Title : /Users/Butler/Desktop/ESPN 30 For 30/01 - Kings Ransom.avi#2:lang=unknown - Imported with GPAC 0.4.6-DEV (internal rev. 6)
Writing library : LAME3.96.1
Encoded date : UTC 2011-07-12 13:19:52
Tagged date : UTC 2011-07-12 13:19:55

 

[slothrob]

It looks like you included an MP3 track, not an AAC audio track. That's the problem.

 

[spacepower7]

It looks like you included an MP3 track, not an AAC audio track. That's the problem.

I agree.

A m4v should not have an mp3 soundtrack if you want to use it on Apple devices. It probably will play fine on the Mac with perian or VLC but I'm not sure but I don't think the official mp4 (m4v) format includes/endorses a mp3 format soundtrack.

Pull the current m4v file back into MKVTools and just convert the audio to 2 channel aac, set the video to pass thru. This conversion will be much shorter than the original video conversion that you already did.

 

[kbutler84]

I agree.

A m4v should not have an mp3 soundtrack if you want to use it on Apple devices. It probably will play fine on the Mac with perian or VLC but I'm not sure but I don't think the official mp4 (m4v) format includes/endorses a mp3 format soundtrack.

Pull the current m4v file back into MKVTools and just convert the audio to 2 channel aac, set the video to pass thru. This conversion will be much shorter than the original video conversion that you already did.

Perfect! Thank you both.

 

[staeit]

This tool should do all the necessary conversion you want... Automatically. The only thing I don't like is how it handles subtitles. The rest of its operation is flawless

 

[kbutler84]

This tool should do all the necessary conversion you want... Automatically. The only thing I don't like is how it handles subtitles. The rest of its operation is flawless

Does it allow batch converting? I'm using an unregistered version of MKVTools, and it forces me to convert one file at a time.

 

[staeit]

Does it allow batch converting? I'm using an unregistered version of MKVTools, and it forces me to convert one file at a time.

Yes it does. You select a directory and it scans that directory for all files that can possibly be converted (*.avi and *.mkv). It then lets you check each file individually, or all files.

I downloaded an entire series of a TV show with an h264 stream and aac sound (no conversion/transcoding necessary) - 10 seasons, and it took like an hour to do all of them.