AVI and anamorphic video bug?
Posted: Wed Oct 17, 2007 5:50 pm
I recently downloaded Handbrake 0.9.1 and am using Mac OS X 10.4.10 and Perian 1.0. I noticed some unexpected behaviour after some test encodes.
For my test I'm using Little Miss Sunshine (wide screen), chapter 1.
1. The first encode I start with AppleTV presets. This creates an MP4 file using h.264 video and AAC audio streams.
2. The next encode I start right after #1 and only change the codec to create an mpeg4 video and AAC audio streams (still using mp4 file format)
3. The next encode I start right after #2 and change the format to AVI with mpeg4 video and mp3 audio streams.
4. The last encode I start right after #3 and change the codec to create h.264 video and mp3 audio streams.
When using Quicktime to play the files, the AVI and MP4 files display differently.
#1 and #2 (MP4 files) play larger (I ensure it's at actual size). QT movie properties show normal size as 720x360 and display size as 853x360.
#3 and #4 (AVI files) QT movie properties show normal size and display size as 720x360. When playing at normal size they are smaller (not as wide) as the MP4 files.
When playing in VLC all display at the same resolution (853x360) as expected.
At first I thought this may have been an issue with anamorphic support with QT (maybe it still is), however, it seems to only be an issue with QT and AVI file format.
Any thoughts? Is there a problem with Handbrake encoding AVI files to support anamorphic video?
For my test I'm using Little Miss Sunshine (wide screen), chapter 1.
1. The first encode I start with AppleTV presets. This creates an MP4 file using h.264 video and AAC audio streams.
2. The next encode I start right after #1 and only change the codec to create an mpeg4 video and AAC audio streams (still using mp4 file format)
3. The next encode I start right after #2 and change the format to AVI with mpeg4 video and mp3 audio streams.
4. The last encode I start right after #3 and change the codec to create h.264 video and mp3 audio streams.
When using Quicktime to play the files, the AVI and MP4 files display differently.
#1 and #2 (MP4 files) play larger (I ensure it's at actual size). QT movie properties show normal size as 720x360 and display size as 853x360.
#3 and #4 (AVI files) QT movie properties show normal size and display size as 720x360. When playing at normal size they are smaller (not as wide) as the MP4 files.
When playing in VLC all display at the same resolution (853x360) as expected.
At first I thought this may have been an issue with anamorphic support with QT (maybe it still is), however, it seems to only be an issue with QT and AVI file format.
Any thoughts? Is there a problem with Handbrake encoding AVI files to support anamorphic video?