Stream error

[cool9]

Encoding an AC3 (to MP2 and WAV) in BeSweet and get this message throughout the output log file:

E7: CRC error
Stream error : Sync found after 224 bytes

Anyone know what it is?

[tebasuna51]

There are a corrupted frame in your ac3 stream and the decoder skip 224 bytes until next ac3 header.

[cool9]

It plays alright in the original video then when I demux the audio and try to convert it to mp2 or wav it doesn't play right. Anything I can do?

[tebasuna51]

Try to repair the ac3 stream with DelayCut before re-encoding (use CRC errors = Silence).

[cool9]

The CRC silence didn't work. Any other features I could try? Is there a guide for this software?

[tebasuna51]

Could you explain a little what is "it doesn't play right" or "CRC silence didn't work"?

Your ac3, out of the video but before encode to mp2/wav, play right?

There are only one error in your stream?

About options to repair frames wit DelayCut you can see:
http://forum.doom9.org/showthread.php?p=810090#post810090

[cool9]

I think I have many errors. Delaycut says "unsynchronized frame" many times. After using delaycut the audio keeps repeating and repeating.


Time 00:00:00.416; Frame#= 14. Crc1 error SILENCED: read = CDDA; calculated=FA2C
Time 00:00:00.416; Frame#= 14. Crc2 error SILENCED: read = 3301; calculated=23B6
Time 00:00:00.448; Frame#= 15. Unsynchronized frame...REWINDED 451 bytes. Found new synch word
Time 00:00:02.336; Frame#= 74. Crc1 error SILENCED: read = 8849; calculated=9421
Time 00:00:05.280; Frame#= 166. Crc2 error SILENCED: read = CB07; calculated=BECA
Time 00:00:05.312; Frame#= 167. Unsynchronized frame...SKIPPED 224 bytes. Found new synch word
Time 00:00:08.320; Frame#= 261. Crc2 error SILENCED: read = AA2F; calculated=61A1
Time 00:00:08.352; Frame#= 262. Unsynchronized frame...SKIPPED 224 bytes. Found new synch word
Time 00:00:11.392; Frame#= 357. Crc1 error SILENCED: read = 0543; calculated=7949
Time 00:00:11.392; Frame#= 357. Crc2 error SILENCED: read = 25F9; calculated=7B3D
Time 00:00:11.424; Frame#= 358. Unsynchronized frame...REWINDED 672 bytes. Found new synch word
Time 00:00:14.464; Frame#= 453. Crc1 error SILENCED: read = F416; calculated=F50A

The clip has over 4000 frames and delaycut does this all the way to the end.

[tebasuna51]

Your ac3 is too much corrupted, but you say "It plays alright in the original video", then new questions:

Format of your original video: avi, vob, ...?

Method used to extract ac3 from video. VirtualDub/Mod, DgIndex, ...?

[cool9]

Original is VOB. I used TMPGEnc and DGIndex to demux to AC3. When I use Womble it demuxes to MPA and has the same playback problems as the AC3.

When I open VOB in GSPOT the audio portion is blank.