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</o:shapelayout></xml><![endif]--></head><body lang=DE link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hello all,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>I’m trying to use flac and metaflac as tooling to analyze the generated FLAC files of a new encoder implementation. However, while my own third-party decoder can handle the output just fine, flac, metaflac, and other tools discard the output since the frame checksum (footer CRC-16) is invalid. This is expected, since I have no checksum generation implemented apart from the frame header checksum (all other checksums are written as 0), but it prevents me from making development process without being able to check my outputs against the reference implementation. I looked around and I couldn’t find a way to turn off either tool’s checksum verification. So I’d like to know how one could turn off checksum verification in the tools, and if that’s not currently possible, I’d like to see that as a feature in a future version of flac. (In that case I would also try to disable the checks in code permanently, though my solution is most likely not going to be upstreamable in any capacity.)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>FYI, the third-party decoder is highly compliant according to the spec test suite, producing identical audio playback on almost all of the files, but it also doesn’t verify or error on any checksums. ffplay and ffmpeg both accept the file and can play and transcode it correctly, although they ignore the sample count in the streaminfo header and will read all frames they can find. The latter leads me to believe that checksums are the actual issue, even though flac reports the generic “Bad Header” and “Lost Sync”.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Greetings and thanks in advance,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Kleines Filmröllchen<o:p></o:p></span></p></div></body></html>