Topic: Slow! (Read 129640 times)

freshbits · « **Reply #6 on:** January 16, 2009, 11:03:54 PM »

I tried the scenario in Example 1 again, but using a different input video that was recorded at a high bitrate of 6400 kbps.

50 minutes later, Video Splitter was frozen at 29% and had produced only 5 minutes of output video.

Therefore, I wonder if it has trouble with the high (6400) bitrate. Also, I wonder if it has trouble with US-standard NTSC interlaced video, even though it was originally encoded as a DVD program stream (720x480). These are just suggestions to think about.

My Hauppage card can only produce DVD, VCD, or SVCD, and all of it is 59.95 fields/sec interlaced video. I don't have to use 6400 kbps, but even with 3000 kbps input video this is slow.

I have to move on to other tasks now, but I will watch this forum to see if you come up with any ideas.

freshbits · « **Reply #5 on:** January 16, 2009, 07:31:00 PM »

More info (according to G-Spot):

Example 1 was recorded with a video bitrate of 6400 kb/s
Examples 2 and 3 were recorded with a video bitrate of 3000 kb/s

Dmitry Vergeles · « **Reply #4 on:** January 16, 2009, 06:47:57 PM »

Hi freshbits,

Thank you for so detailed data, we will try to replicate the problem

freshbits · « **Reply #3 on:** January 16, 2009, 05:28:30 PM »

(G-Spot says:) DVD-ready (720x480) MPEG-2 Program Stream 29.95 fps, system bitrate 6075 kb/s VBR, audio MP3 384 kb/s CBR. Generated by Hauppage TV tuner card.

Example 1. One input file was 4,983,696 KB (1 hour, 35 minutes). I tried several times, asking for 5 cuts to eliminate all except approximately 42 minutes. Splitter was unable to create more than 14 minutes (724 KB) of output before freezing. It took three hours to do this.

Example 2. Input file was 1,640,808 KB (1 hour 1 minute). I asked for an 8-minute (8:02) clip output. After 22 minutes, Splitter stopped at 99%. After waiting a few more minutes I shut the program down. Output file seems okay except for last frame or two.

Example 3. Input file was 1,641,192 KB (1 hour 1 minute). I asked for a 1-minute 35 second (1:35) clip output. After 11 minutes, Splitter stopped at 99%. After waiting a few more minutes I shut the program down. Output file seems okay except for last frame or two.

I am continuing to investigate.

Dmitry Vergeles · « **Reply #2 on:** January 16, 2009, 05:42:47 AM »

Hi freshbits,
Thank you for the feedback. We only have the explanation you deal with some BUG.

Please let us know if you try to edit MPEG-2 transport or Program stream nad what is file size of original file.

freshbits · « **Reply #1 on:** January 16, 2009, 04:39:27 AM »

Can anyone explain why it should take 45 minutes for Video Splitter to split out and save 7 minutes of MPEG-2 without re-encoding? This is a 3GHz dual core CPU. This is distressing and disappointing. I have used the free AVI splitter and I don't remember it taking so long.

It would take much less time to re-encode the video, but I want to avoid that.