[Ali Elamin]

this tool you are suggesting (DVMP) does it merge m2ts clips and preserve 1920*1080 resolution plus 5.1 surround sound cause i could nor verify that in their website

thank you

[Ali Elamin]

first mp4 allows surround sound.
second mp4 allows progressive encoding which from what i read is better for playback right?
third i think (i could be wrong) that mp4 preserve the quality with less file size

but even if all of the above is invalid i still would like to know why sony vegas produces the following error message

An error occurred while creating the media file test.mp4
An error occurred while opening a codec

and how to fix it

lastly rendering with m2ts is it a lossless re-encoding?

[Ali Elamin]

thank you for the input about the downmix issue. As i told you earlier with regard to what i want as my final output

1- merge the clips together preserving their chronological sequence
2- find away to embed the date/time stamp (already covered that)
3- preserve the resolution 1290*1080.
4- preserve the surround 5.1 sound

i have a series of .m2ts clips it would sure be nice to keep them in their original format but i need to merge them so they become one file is this possible?
and i will export the date time stamp as subtitle (please note that i only have DL DVD writer) so i will write the resulting file to the DVD as data file with the subtitle file in the same directory with same name. is this a viable solution?if yes how?

Now having said that i do not mind losing some quality as long as the above 4 conditions are satisfied and this loss is not visually noticeable.

I tested rendering using wmv v11 with 8Mbps HD 1080-30p video, 5.1 surround. the result was excellent but it produced a 262 Mb file out of 100 MB original material, and i did not do anything fancy. the only thing i added was an overlay video track where the time stamps appears and put the 2 .m2ts clips beside each other on the video track.

I tried to using Sony AVC template AVCHD 1920*1080-50i 5.1 surround (in hope that i can get the same results as with wmv encoding but with reduced size) and:

1- i pressed custom
2- went to system tab and choose mp4
3- tried to save and sony vegas gave the following error was produced

An error occurred while creating the media file test.mp4
An error occurred while opening a codec

i have verified that i have mp4 codecs in my system and i can play mp4 movies how can i fix this problem?

sorry for the long posts
and again thank you for your time and input

[Ali Elamin]

let me tell you what i want as final output

first i am shooting using the best settings xr520 offers when examining these clips’ properties through sony vegas i get the following

Video:00:00:10.400, 25.000 fps interlaced, 1920x1080x12, AVC
Audio 1:00:00:10.400, 48,000 Hz, 5.1 Surround (stereo downmix), Dolby AC-3
Audio 2:00:00:10.400, 48,000 Hz, 5.1 Surround, Dolby AC-3

now why do i have two audio streams and why Audio 1 has “stereo downmix” ? i could not find an answer for that (if some one can shed some light on this matter it would be nice)

now regarding what i want as my final output

1- merge the clips together preserving their chronological sequence
2- find away to embed the date/time stamp (already covered that)
3- preserve the resolution 1290*1080.
4- preserve the surround 5.1 sound

if i need to re-encode i would like to do it in such away that quality loss would me minimal can you suggest a format/settings that would accomplish this

thank you for your time

[Ali Elamin]

thank you for the response but i am still learning vegas so forgive me i did not follow in all what you are saying so let me ask you this

1- what is n/out region markers?

2- what is DVDa? I google it a little and the search says it is DVD audio! i do not think this is correct

3- you are saying “Export regions as subtitles” and this will allow me to keep the quality of my video and I want this but the video is actually a series of little clips. will i be able to merge these clips together without rendering and end up with one video file?