MP4 acts like AVCHD in Apple at
DV Info Net

Go Back   DV Info Net > High Definition Video Acquisition > AVCHD Format Discussion

AVCHD Format Discussion
Inexpensive High Definition H.264 encoding to DVD, Hard Disc or SD Card.

Thread Tools Search this Thread
Old December 20th, 2008, 12:16 PM   #1
Major Player
Join Date: Aug 2008
Location: Columbia, Missouri
Posts: 210
MP4 acts like AVCHD in Apple

So, I was testing out some exports with Pro CS4, finally working with some AVCHD from an SR12 a friend sent me, and exported it using CS4's media encoder. H.264 MP4. Anyway, plays back perfectly on my machine, so no problems there.

I sent the edited, exported files back to my friend. He's using an Apple (Final Cut) and the playback of the MP4 ran very choppy. Also identified the files as AVCHD codec, and not the H.264 MP4 that I'd exported them to.

These were his m2ts files, and worked fine on his machine when he exported them. Any ideas as to why it would still be identified as AVCHD on his Mac even through it went through my encoding process as H.264 MP4?
"Make the most of yourself, for that is all there is of you." R W Emerson
RED ONE MX | 5DmkIII | SD744T | SD442 | Sennheiser MKH416 P48
Brian Maurer is offline   Reply With Quote
Old December 23rd, 2008, 12:39 PM   #2
Major Player
Join Date: Mar 2006
Location: Chicago
Posts: 706
I would like to know this answer too. The 1080 30p files I shoot play fine on my Mac. But some edited 720p files from the same camera on Vimeo are choppy. In fact it seems quite a few of the posted 5DII files are damaged in IQ or choppy. Clearly editing H264 still has issues.
Don Miller is offline   Reply With Quote
Old December 23rd, 2008, 01:08 PM   #3
Join Date: Nov 2008
Location: Miami, FL USA
Posts: 1,505
Well, avchd uses H.264 and mp4. Info from Wikipedia that might be useful:

"AVCHD (AVC-HD, AVC HD) video is recorded using the MPEG-4 AVC/H.264 video compression codec. Audio is stored in either compressed form (Dolby AC-3), or uncompressed form (multichannel PCM). Aside from recorded audio and video, AVCHD includes features to improve media presentation: menu navigation, slide shows and subtitles. The menu navigation system is similar to DVD-video, allowing access to individual videos from a common intro screen. Slide shows are prepared from a sequence of AVC still frames, and can be accompanied by a background audio track. Subtitles are used in some camcorders to timestamp the recordings."

Battle Vaughan/ video team
Battle Vaughan is offline   Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > High Definition Video Acquisition > AVCHD Format Discussion

Thread Tools Search this Thread
Search this Thread:

Advanced Search


All times are GMT -6. The time now is 02:03 PM.

DV Info Net -- Real Names, Real People, Real Info!
1998-2021 The Digital Video Information Network