Imposible to edit a AVCHD video

[Asrhael]

Good morning, im bought recently a USB ISDB-tb turner and i recorded some FullHD programs to my laptop.

The specs of the video are atached to this post, it was generated using the MediaInfo app (free).

When add the video into the the Video Studio Pro X3,it takes a lot of time to load (about 3min), then when i look the properties from this file, not info about the sound are show.

I thought it might be a software problem (with VPS X3), but I tried with other software such as Premiere Elements 8, Sony Vegas 9.0E, PowerDirector, and it happens exactly the same.

With TMPGenc can import the file, however when the scenes are corrupt encode (jumps in the picture).

I recorded other video files and all of have the same trouble with the audio, but when i want to view in the Totalmedia Theatre v3 (or in VLC, MPHC too) the audio and video looks fine and smooth.

I drag n' drop other type of video (not recorded with my new tv turner) into VSP, and its properties looks ok (audio and video properties are listed).

Please, sorry my poor english, i need some help with these kind of file (AVCHD), if someone need a "sample", I uploaded a video to this link.

I used the software Totalmedia 3.5 for tv viewing and capturing, i tried to use powercinema but appear to have disabled the DXVA hardware acceleration for FullHD contents.

Thank you very much for any help that you can provide me.

Regards,
Francisco Chavez C.

[vcd4ever]

Hi Asrhael,

I have downloaded your sample and I think that I have found a way to fix it. Can you download this sample "Removed" and tell me if it works with Video Studio Pro X3. The programs used for this sample was Videoredo, Tmpgenc xpress 4 and Tsmuxer.

Vcd4ever.

[pepegot1]

Now you understand the futility of AVCHD editing today! Tomorrow is another story.

[Asrhael]

Thanks guys for help me, Mr Vcd4ever: your modified sample allowme to import it to Video Studio X3!, but the only trouble is the sync between the video and audio (the audio sound before the video). Now i'll download the software that you mention for testing in my home.

Thank you very much!

Regards,
Francisco Chavez Contreras

[edDV]

This is AVC 1920x1080i/29.97 (telecine) video as broadcast but not strictly AVCHD (a camcorder/Blu-Ray format).

Yes, AVC video is high definition and highly compressed. In most cases, a laptop will need hadware decode assist from the display chipset just to play the video at 1x. Editing is much more CPU intensive since one needs to move at faster than 1x through the file to find an edit point. The CPU must decode frames on the fly currently without help from the display chipset. There is progress on GPU decode assist to editors (e.g. NVidia 'cuda) but this is not yet widely supported especially at the consumer level.

Your country has chosen to broadcast highly compressed AVC for more efficient use of RF spectrum. The downside is the hardware power required to display and edit is much greater. In the USA, we started digital broadcast with MPeg2 in ~2002 which requires less hardware sophistication for playback and editing but requires about twice the broadcast RF spectrum vs. AVC.

A typical editing strategy for AVC is to convert to a so called "digital intermediate" format to facilitate editing efficiency. At the consumer level, many programs simply re-encode to MPeg2 (about half the compression) since most consumers want DVD as output. This recode takes time during import but then the edit timeline is about twice as responsive.

Pro edit systems (e.g. FCP, Premiere Pro, Vegas Pro) offer two strategies. They allow so called "native" MPeg2 and AVC project formats that rely on the fastest CPU+GPU computational hardware (e.g. i5/i7 quad core + high end GPU). The second approach intended for more normal hardware is a digital intermediate (e.g. Apple Intermmediate Codec or Cineform) which decode Mpeg2 or AVC to frames but retain in frame compression to control bit rate to that that can be handled by a single hard drive. The cost of this decompression is about 10x expansion in file size (6-12GB/hr to around 60GB/hr). The benefit is approx 10x faster response for editing.

[vcd4ever]

Mr Vcd4ever: your modified sample allowme to import it to Video Studio X3!, but the only trouble is the sync between the video and audio (the audio sound before the video).

Thanks for letting me know how it worked. I hope that you can also download and try to import this sample "Removed" into Video Studio X3. The same programs was also used for this sample, but I have tried another combination, so perhaps this has fixed the sync problem.

Vcd4ever.

[Asrhael]

Hi Vcd4ever, your new version of my video file is perfect. The sync between the video and audio are ok, and the Video Studio X3 can import it both video and audio stream (AC3 audio).

I downloaded the trial version of VideoReDo v4 that suport h264..and then i tried to apply the "Quick Fix" option with not result. Please letme know how can you fix the original video file.

I am very impressed with your skills, I thought that no program can repair this video. If you indicate the steps I repeat them with the original file of 60min duration.

Cheers,
Francisco Chavez

[vcd4ever]

If you indicate the steps I repeat them with the original file of 60min duration.

First use "QuickStream Fix" and select "H.264 Transport Stream (*.ts)". Now open this ts with tsmuxer and select "Demux". Klick "OK" when tsmuxer display's the error "Some tracks not recognized. This tracks was ignored. File name:". The next step is now to open this ts with tmpgenc express 4 and saving the audio to ac3. The last thing to do is now to add the demuxed videostream and the ac3 stream into txmuxer and selecting "TS muxing".

Vcd4ever.

[Caple]

Hi, Francisco.

I'm from Brazil and I'm looking for a good ISDB-Tb capture device. I found some USB devices but all of them look too simple.
What capture device are you trying?

[Asrhael]

Hello Mr Caple. I bought the "Geniatech S870" ISDB-tb capture usb stick in ebay, the seller sendme from USA to Chile (and send it to any country like Brazil too).

Please, follow the next link and you can see the product and the shipping. The USB stick come with a small magnetic-antenna that you can fix to any metalic surface, and come with TotalMedia 3.5.

Mr Vcd4ever, thanks man..the "trick" work for me 100%, and now i will edit the file into VSP..then i post the result.


Regards,
Francisco Chavez C.

[Caple]

Thanx.

[chicken264]

Have you first tried simply renaming the file mts, ts or m2ts.

[chicken264]

Video studio Pro X2 imported file for me without any problem.

[Asrhael]

Hello chicken264, yes i tried to rename the file. Im use a program called tsdoctor and this program tellme that the original file have a PCR PID bad information, this is about the sync between the video and audio..so i think that it´s the problem because X3 dont import the audio stream of the original file (VSP X3 only import the video stream, i dont tried with X2).

I thought that my TV watching software was the problem (totalmedia 3.5), because this program record the TV show to a mpg.

..you import the original file w/o problem of lost of the audio stream?

thanks man

[Asrhael]

Hello, i post more progress respect to the ISDB recorded file:

I searched thoroughly the format of audio and video stream using the Brazilian ISDB-tb standard.

First, the audio is transmitted in HE-AAC format, which is special for bandwidth "optimized" and the H264 is a classic video with a resolution depending on the signal (if it is HDTV, SDTV, etc).

Through various tests, I found that the filter using TotalMedia 3.5 creates a problem of corruption in the resulting container file (mpeg format TotalMedia saves).

The resulting video have problems in the PCR. This is corroborated by using other capture software which he could change the filter used to decode the H264 stream, I used the following programs:

• HiDTV V2.901

• DVBViewer V4.2.1

Both software allow you to view HDTV with my S870 Geniatech USB device, and the advantage is that you can choose the filter to use.

Setting in both the filter as Arcsoft decoder, the file was generated with problems in PCR in both softwares (shown in TS-Doctor and correctable with VideoReDo).

Setting both softwares with the filter as Cyberlink filter or FFDShow Tryout (now supporting DXVA), the file generated without PCR bugs.


So I decided to capture HDTV through the filter of Cyberlink (installed along with PowerDVD V10), then to edit this file you need to change the format of your audio stream.

For this I used the tsMuxer with which I kept the video elementary stream H264.

After that, I used the software dgavcdec, which allows extracting the HE-AAC audio stream. This audio file can be opened only by Winamp, so I set the output of Winamp in "write mode" to generate a WAV file.

This WAV then multiplexing with tsMuxer and generated a perfect file to be imported through any video editor (Premiere CS5 is currently giving me better results).


Any question please sendme a PM or in the forum ,
Thanks to all!!


Regards,
Francisco Chávez