Edit AVC video without re-encoding?

[RagingSloth]

I have some AVC video that was captured with a GoPro HD Hero camera. I would like to make the following edits to the raw footage:

• trim undesirable video
• add transitions
• add a 2nd audio track

Is it possible to do these edits without re-encoding? If so, using what program(s)? Below is some info on the video.



Format : MPEG-4
Format profile : JVT
Codec ID : avc1
File size : 584 MiB
Duration : 10mn 2s
Overall bit rate : 8 134 Kbps
Encoded date : UTC 2010-03-14 12:49:38
Tagged date : UTC 2010-03-14 12:49:38
AMBA :


Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 10mn 2s
Bit rate mode : Variable
Bit rate : 7 999 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 fps
Bits/(Pixel*Frame) : 0.290
Stream size : 574 MiB (98%)
Title : Ambarella AVC
Language : English
Encoded date : UTC 2010-03-14 12:49:38
Tagged date : UTC 2010-03-14 12:49:38

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : 40
Duration : 10mn 2s
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Stream size : 9.19 MiB (2%)
Title : Ambarella AAC
Language : English
Encoded date : UTC 2010-03-14 12:49:38
Tagged date : UTC 2010-03-14 12:49:38

[guns1inger]

VideoRedo's new beta does trims of HD AVC material without re-encoding. It won't do transitions, and even if a smart-encoder comes along that does more than VideoRedo, transitions will have to be re-encoded (anything that changes the actual video requires re-encoding).

AVIDemux might also be able to handle your files - it handles most AVC files - and will do trimming and can add audio tracks without re-encoding. Again, no transitions though.

[Michael33]

Only a suggestion to join all your clips and cut/trim losslessly: MPEG Streamclip I use it every day for clips from my Kodak Zx1 (which I notice has a much higher bitrate than the GoPro HD Hero, typically 13mbps).